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https://api.github.com/repos/pandas-dev/pandas/issues/22312
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22,312
DatetimeIndex.map() preserves freq only for some functions
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2018-08-13T12:43:35Z
2020-04-01T03:32:10Z
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MEMBER
null
#### Code Sample, a copy-pastable example if possible ```python In [2]: idx = pd.date_range(start='2010-08-08', end='2010-08-15') In [3]: idx.map(lambda x : x + pd.Timedelta('3 days')) Out[3]: DatetimeIndex(['2010-08-11', '2010-08-12', '2010-08-13', '2010-08-14', '2010-08-15', '2010-08-16', '2...
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22,313
"closed" is reset to 'right' when interval is multiplied by scalar
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MEMBER
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#### Code Sample, a copy-pastable example if possible ```python In [2]: pd.Interval(0, 2, closed='left') * 2 Out[2]: Interval(0, 4, closed='right') ``` #### Problem description I see no reason why multiplying an ``Interval`` by a scalar should change its "direction". #### Expected Output ``` Out[2]: ...
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22,314
Document `deep` parameter in ExtensionArray.copy
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2018-08-13T13:22:45Z
2019-07-23T18:00:29Z
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CONTRIBUTOR
null
And pass it through via `Series.copy`. ```diff diff --git a/pandas/tests/extension/decimal/array.py b/pandas/tests/extension/decimal/array.py index 108b8874b..7085a231b 100644 --- a/pandas/tests/extension/decimal/array.py +++ b/pandas/tests/extension/decimal/array.py @@ -78,6 +78,7 @@ class DecimalArray(Extensi...
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22,315
Index() constructor is inconsistent in detecting subclass-specific keyword arguments
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2018-08-13T15:16:54Z
2020-12-22T23:45:29Z
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MEMBER
null
#### Code Sample, a copy-pastable example if possible ```python In [2]: pd.Index(['20000101', '20000102']) Out[2]: Index(['20000101', '20000102'], dtype='object') In [3]: pd.Index(['20000101', '20000102'], freq='D') Out[3]: Index(['20000101', '20000102'], dtype='object') In [4]: pd.Index(['20000101', '20000...
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22,316
Match can return non-boolean results yet warning suggests results are boolean
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#### Code Sample, a copy-pastable example if possible ```python In [26]: pd.Series(['a', 'b', 4]).str.match('a') Out[26]: 0 True 1 False 2 NaN dtype: object In [27]: pd.Series(['a', 'b', 4]).str.match('a', as_indexer=True) # C:\Users\username\AppData\Local\Continuum\Anaconda3\Scripts\ipython:1:...
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Request to add more date formats in to_json method
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2018-08-13T17:21:28Z
2021-05-25T15:27:10Z
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CONTRIBUTOR
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#### Problem description to_json method provides date in either epoch or iso format. Would be nice if we can support more date formats like UTC, GMT etc.
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DEPR: join_axes-kwarg in pd.concat
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CONTRIBUTOR
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- [x] closes #21951 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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22,319
Bump Min pytest Version
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2018-08-13T19:23:46Z
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MEMBER
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xref https://github.com/pandas-dev/pandas/pull/22213#issuecomment-412630657
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Bump pytest
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- [X] closes #22319 - [ ] tests added / passed - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry @TomAugspurger
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CLN: Remove unused method
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2
2018-08-13T19:45:35Z
2018-08-14T10:10:10Z
2018-08-14T10:10:05Z
CONTRIBUTOR
null
- [y] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` This method isn't used anywhere in the codebase, good to delete?
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350,168,244
MDExOlB1bGxSZXF1ZXN0MjA4MDgzODkw
22,322
CLN: Remove variable assignment on CI script
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2
2018-08-13T19:49:26Z
2018-08-26T18:38:16Z
2018-08-14T00:05:41Z
CONTRIBUTOR
null
Looks to me like this variable assignment is not required since on line 19 `old_class = current_class`
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350,168,572
MDExOlB1bGxSZXF1ZXN0MjA4MDg0MTM1
22,323
CLN: Remove unused param
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3
2018-08-13T19:50:17Z
2018-11-04T16:15:36Z
2018-11-04T16:15:36Z
CONTRIBUTOR
null
Param no longer used. Can remove it from single caller of this function
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350,170,693
MDExOlB1bGxSZXF1ZXN0MjA4MDg1NzY3
22,324
CLN: Remove deprecated method
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4
2018-08-13T19:56:32Z
2018-08-14T03:01:22Z
2018-08-13T23:58:26Z
CONTRIBUTOR
null
These params are no longer in the method, therefore can remove the docs strings
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https://api.github.com/repos/pandas-dev/pandas/issues/22325
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350,172,762
MDExOlB1bGxSZXF1ZXN0MjA4MDg3MzYy
22,325
SparseArray is an ExtensionArray
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70
2018-08-13T20:02:46Z
2019-12-18T07:22:17Z
2018-10-13T11:37:14Z
CONTRIBUTOR
null
Closes #21978 Closes #19506 Closes https://github.com/pandas-dev/pandas/issues/22835 High-level summary: SparseArray is an ExtensionArray. It's no longer an ndarray subclass. The actual data model hasn't changed at all, it's still an array and a `sparse_index`. Only now the sparse values are `self.sparse_values`...
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350,174,394
MDU6SXNzdWUzNTAxNzQzOTQ=
22,326
Clarify is_bool_indexer for Extension dtypes
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4
2018-08-13T20:07:38Z
2018-09-20T14:01:32Z
2018-09-20T14:01:32Z
CONTRIBUTOR
null
What do we want here? ```python In [1]: import pandas as pd In [2]: pd.core.common.is_bool_indexer(pd.Categorical([True, True])) Out[2]: False ``` working around this in https://github.com/pandas-dev/pandas/pull/22325/
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350,224,889
MDExOlB1bGxSZXF1ZXN0MjA4MTI4MTE5
22,327
CLN: Parameterize test case
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3
2018-08-13T23:07:19Z
2018-08-14T10:09:01Z
2018-08-14T10:08:58Z
CONTRIBUTOR
null
- [y] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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350,233,104
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22,328
DataFrame.corrwith has unintuitive behavior
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3
2018-08-13T23:50:25Z
2018-12-31T13:17:54Z
2018-12-31T13:17:54Z
MEMBER
null
```python import numpy as np import pandas as pd np.random.seed(2357) df1 = pd.DataFrame(np.random.normal(size=(100, 3))) df2 = pd.DataFrame(np.random.normal(size=(100, 3))) # not clear what this means df1.corrwith(df2) # simply renaming columns produces nans df2.columns = ["a", "b", "c"] df1.corrwith(d...
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22,329
CLN: de-duplicate index validation code
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14
2018-08-14T01:43:07Z
2018-08-22T13:47:40Z
2018-08-22T10:37:56Z
MEMBER
null
There are currently 3 nearly-identical versions of this code. I'm pretty sure the strictest one is the most-correct, so that is made into the only one.
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350,268,543
MDU6SXNzdWUzNTAyNjg1NDM=
22,330
BUG: MultiIndex name lost when using .loc with missing index values
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7
2018-08-14T03:30:49Z
2018-08-19T18:55:35Z
2018-08-19T18:55:34Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Your code here import pandas as pd K = 10000 l1 = list(range(K)) l2 = list(range(K)) index = pd.MultiIndex.from_tuples(list(zip(l1, l2)), names=['first', 'second']) data = [[1, 2]] * K df = pd.DataFrame(data, index=index, columns=['c1', 'c2'])...
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22,331
BUG: Interval scalar arithmetic operations reset closed
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2018-08-14T04:24:22Z
2018-08-14T14:28:57Z
2018-08-14T14:28:28Z
MEMBER
null
- [X] closes #22313 - [X] tests added / passed - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [X] whatsnew entry Including this with 0.24.0 for the time being; I think this would be easy to backport into 0.23.5 since this looks to be disjoint from the other interval related changes but tho...
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22,332
Index.get_indexer() throws when None and at least one of np.nan, pd.NaT are present in input
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1
2018-08-14T05:13:58Z
2018-09-18T12:51:16Z
2018-09-18T12:51:16Z
CONTRIBUTOR
null
#### Code Sample ```python arr=pd.unique(np.array([pd.NaT, None], dtype=np.object)) index=pd.Index(arr, dtype=np.object).get_indexer([]) ``` #### Problem description throws "Reindexing only valid with uniquely valued Index objects". This is also the case for `[np.nan, None]` #### Expected Output It s...
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22,333
is_sequence is too aggressive for determining how to print
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2018-08-14T05:56:52Z
2019-06-24T09:46:36Z
2019-06-24T09:46:36Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd class Foo(object): def __len__(self): return 3 def __iter__(self): return iter([1, 2, 3]) class Bar(Foo): def __repr__(self): return "Hello world" print(pd.DataFrame([[Foo()], ...
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22,334
Plotting methods (line, area, ..) don't handle string x values
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2018-08-14T08:53:56Z
2019-04-30T12:59:53Z
2019-04-30T12:59:53Z
MEMBER
null
From https://github.com/pandas-dev/pandas/pull/22307#pullrequestreview-145585750: when specifying the x labels in one of our plotting calls where this consists of strings, nothing is shown on the x labels: ``` In [6]: df = pd.DataFrame({'sales': [3, 2, 3], ...: 'visits': [20, 42, 28], ......
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22,335
Remove Index.__inv__
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2018-08-14T09:26:07Z
2020-10-18T22:46:27Z
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MEMBER
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#### Code Sample, a copy-pastable example if possible ```python In [1]: import pandas as pd In [2]: idx = pd.Index([2, 4, 6]) In [3]: idx.__inv__() Out[3]: Int64Index([-2, -4, -6], dtype='int64') ``` #### Problem description ``idx.__inv__`` does what ``idx.__neg__`` does, and not do what its name sugges...
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22,336
CLN: remove Index.__inv__ , add Index.__invert__
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2018-08-14T10:01:06Z
2018-11-04T16:15:05Z
2018-11-04T16:15:04Z
MEMBER
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- [x] closes #22335 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry @jreback @jorisvandenbossche suggestions on where to put a test (``pandas/tests/test_arithmetic.py`` would seem the right place, except it only contains tests involving datetime...
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22,337
COMPAT: dateutil failing on master
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2018-08-14T10:04:33Z
2018-08-16T10:32:32Z
2018-08-16T10:32:32Z
CONTRIBUTOR
null
https://travis-ci.org/pandas-dev/pandas/jobs/415820574, this is the numpy-dev build we are building dateutil from source: dateutil: 2.7.3.dev208+g510359d is causing the following ``` =================================== FAILURES =================================== _____ TestDatetimeIndexTimezones.test_timetz_a...
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TST: incorrectly used fixtures causing warnings
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2018-08-14T10:06:38Z
2018-09-14T01:54:18Z
2018-09-14T01:54:18Z
CONTRIBUTOR
null
https://travis-ci.org/pandas-dev/pandas/jobs/415820572: this is the 3.6 build ``` =============================== warnings summary =============================== pandas/tests/io/test_sql.py::TestSQLApiConn::()::test_read_sql_iris /home/travis/miniconda3/envs/pandas/lib/python3.6/site-packages/_pytest/fixtures.py...
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22,339
TestPeriodIndex.test_resample_empty_dataframe is failed when I pass kwargs to Resampler._groupby_and_aggregate
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2018-08-14T11:00:30Z
2018-08-17T07:59:47Z
2018-08-17T07:59:47Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible code diff to reproduce the issue ``` diff --git a/pandas/core/resample.py b/pandas/core/resample.py index 4a3625b2d..c82382f96 100644 --- a/pandas/core/resample.py +++ b/pandas/core/resample.py @@ -1043,7 +1043,7 @@ class PeriodIndexResampler(DatetimeInde...
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Pandas in QGIS - MAC
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7
2018-08-14T12:08:46Z
2018-08-16T15:13:31Z
2018-08-15T13:31:21Z
NONE
null
I'm on MAC, and I want to import pandas into my QGIS V2.18. I have tried following the steps of this answer [here](https://stackoverflow.com/questions/31532501/how-to-install-pandas-library-in-qgis-python/31533128#31533128) Uninstalled and reinstalled pandas using pip, and confirm its added to the PATH, still not...
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22,341
S3FS tests fail with non-us locale
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4
2018-08-14T12:26:16Z
2018-08-15T12:44:36Z
2018-08-15T12:44:21Z
CONTRIBUTOR
null
```python diff --git a/pandas/tests/io/parser/test_network.py b/pandas/tests/io/parser/test_network.py index a7cc3ad98..2b728c03d 100644 --- a/pandas/tests/io/parser/test_network.py +++ b/pandas/tests/io/parser/test_network.py @@ -59,6 +59,9 @@ class TestS3(object): def test_parse_public_s3_bucket(self, t...
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350,429,825
MDU6SXNzdWUzNTA0Mjk4MjU=
22,342
Datetime field names use different normalization than calendar
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2
2018-08-14T13:32:35Z
2020-04-01T03:34:46Z
null
CONTRIBUTOR
null
At least under some conditions? ```python >>> import locale >>> import calendar >>> import unicodedata >>> from pandas._libs.tslibs import fields >>> locale_name = "crh_UA.UTF-8" >>> x = fields.get_locale_names('f_month', locale_name)[6].capitalize() >>> y = calendar.month_name[6].capitalize() >>> x == y ...
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22,343
API: dispatch to EA.astype
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11
2018-08-14T14:32:39Z
2018-08-20T12:12:22Z
2018-08-20T11:07:36Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/21296 split from https://github.com/pandas-dev/pandas/pull/22325 Note that this is just a partial fix to get sparse working. We have some issues: for better or worse, categorical is still special cased. `Series[EA].astype('category')` will not yet dispatch to ...
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[CLN] Make more of numpy_helper unnecessary
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2018-08-14T15:26:50Z
2018-08-16T16:14:43Z
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MEMBER
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22,345
API: ExtensionDtype._is_numeric
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4
2018-08-14T15:37:19Z
2018-08-20T14:02:54Z
2018-08-20T11:18:11Z
CONTRIBUTOR
null
closes #22290 split from https://github.com/pandas-dev/pandas/pull/22325 It's not clear what else we should be testing, since I'm not sure what all uses `Block.is_numeric`. cc @jschendel
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350,510,207
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22,346
Reductions for ExtensionArray
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4
2018-08-14T16:46:27Z
2018-10-12T12:19:58Z
2018-10-12T12:19:58Z
CONTRIBUTOR
null
Creeping up to this in https://github.com/pandas-dev/pandas/pull/22345 A few questions 1. What should this look like for EA authors? What helpers can / should we provide? 2. How does this affect users? Specifically, assuming IntegerArray implements reductions, what's the dtype here? ```python In [11]: df = p...
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22,347
Feature request: pandas.Series.query()
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16
2018-08-14T16:51:55Z
2021-06-21T06:11:46Z
null
CONTRIBUTOR
null
I would like to request a `pandas.Series.query()` method that works identically to [`pandas.DataFrame.query()`](https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.query.html). I have a large multi-indexed series that I would like to split into training and testing data for an ML research project...
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22,348
Pandas to_datetime() breaks on or after 2262-04-12
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2018-08-14T17:09:32Z
2018-08-14T17:17:46Z
2018-08-14T17:17:46Z
NONE
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#### Code Sample, a copy-pastable example if possible ```python import pandas as pd from datetime import datetime # Works ok dt = '2262-04-11' datetime.strptime(dt, '%Y-%m-%d') # Works ok dt = '2262-04-11' pd.to_datetime(dt, format='%Y-%m-%d') # Works ok dt = '2262-04-12' datetime.strptime(dt, '%Y-%...
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22,349
Drop redundant TestLocale
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2018-08-14T17:31:41Z
2018-08-17T12:27:31Z
2018-08-16T10:43:03Z
CONTRIBUTOR
null
We have the `TestLocaleUtils` class in `tests/util/test_util.py` https://github.com/pandas-dev/pandas/blob/master/pandas/tests/util/test_util.py#L421 which is more comprehensive and includes `test_get_locales` which is functionally identical. - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `git diff u...
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22,350
~Finish Collecting Arithmetic Tests
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2018-08-14T21:56:07Z
2018-09-09T01:37:09Z
2018-09-09T01:36:56Z
MEMBER
null
De-duplicate fixtures and put nearly all of them in conftest
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22,351
TypeError: 'Series' objects are mutable, thus they cannot be hashed
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2018-08-14T22:37:53Z
2018-08-14T23:13:22Z
2018-08-14T22:52:58Z
NONE
null
def get_predict(user_id, title): return svd.predict(user_id, id_map.loc[title, 'movieId']).est def watched (user_id, title): user_table = get_user_table(user_id) if len(user_table[user_table['title'] == title])>0: return 'Yes' else: return 'No' def just_watch_it(user, rating_...
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22,352
Use tuple sequences for multidimensional array indexing
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1
2018-08-14T23:04:37Z
2018-08-15T02:22:09Z
2018-08-15T02:22:02Z
CONTRIBUTOR
null
On Travis CI [logs](https://travis-ci.org/pandas-dev/pandas/jobs/415610906) we get the below warning ( 4 times): pandas/tests/series/indexing/test_datetime.py::test_getitem_median_slice_bug /home/travis/build/pandas-dev/pandas/pandas/core/internals/blocks.py:301: FutureWarning: Using a non-tuple sequence for mult...
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22,353
test_can_set_locale_invalid_get local failure
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2018-08-14T23:08:10Z
2018-08-14T23:12:47Z
2018-08-14T23:12:47Z
MEMBER
null
OSX 2.7 ``` self = <pandas.tests.util.test_util.TestLocaleUtils object at 0x13db41290>, monkeypatch = <_pytest.monkeypatch.MonkeyPatch object at 0x13db41450> def test_can_set_locale_invalid_get(self, monkeypatch): # In some cases, an invalid locale can be set, # but a subsequent getlocale()...
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22,354
Grab timezones appropriately in timetz test
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2018-08-14T23:29:46Z
2018-08-16T16:54:39Z
2018-08-16T10:32:32Z
MEMBER
null
- [x] closes #22337 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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22,355
[DISC][BUG] DataFrame broadcasting behavior
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2018-08-14T23:49:25Z
2018-12-05T00:02:11Z
2018-12-05T00:02:11Z
MEMBER
null
At the moment some `DataFrame` arithmetic/comparison operations have unintuitive or ad-hoc broadcasting behavior. ``` df = pd.DataFrame(np.arange(6).reshape(3, 2), columns=['A', 'B']) ``` - [x] 1-D list and 1D np.array are treated differently, with the style of differentness dependent on shape: ``` >>> df =...
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22,356
CLN/DEPR: removed deprecated as_indexer arg from str.match()
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2018-08-15T02:56:54Z
2018-09-07T12:46:45Z
2018-09-07T09:06:16Z
CONTRIBUTOR
null
- [x] closes #22316 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry removed as_indexer(deprecated of 0.20.0) arg completely from str.match.
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22,357
Fix index locator cast bool key to float.
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2018-08-15T05:05:13Z
2018-08-22T10:31:06Z
2018-08-22T10:31:00Z
CONTRIBUTOR
null
- closes #19087
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22,358
ENH: unify signature for df.update and Series.update
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2018-08-15T05:58:58Z
2021-06-22T04:20:49Z
null
CONTRIBUTOR
null
Currently, there's ```DataFrame.update(other, join='left', overwrite=True, filter_func=None, raise_conflict=False)``` and ```Series.update(other)``` I think Series should have the same keywords/capabilities, and ideally share the implementation, probably in `generic.py`. Relevant also in light of #22286 and #2...
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22,359
DOC: Expose ExcelWriter as part of the Generated API
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2018-08-15T07:26:58Z
2018-09-18T14:51:08Z
2018-09-18T12:54:32Z
CONTRIBUTOR
null
- [x] closes #21835 - N/A tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - N/A whatsnew entry
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22,360
BUG: Check types in Index.__contains__ (#22085)
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2018-08-15T07:36:17Z
2018-09-05T07:14:21Z
2018-09-05T06:13:49Z
CONTRIBUTOR
null
- [x] closes #22085 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry I added is_float, is_integer_dtype in Index.\_\_contains\_\_. If key is float and dtype of Index object is integer, return False.
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22,361
setting a whole column changes column dtype from "category" to "object"
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2018-08-15T07:47:25Z
2021-06-22T04:21:44Z
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NONE
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#### Code Sample, a copy-pastable example if possible ```python # Your code here import pandas as pd from enum import Enum, IntEnum, auto # Your code here class ConnectionRoles(Enum): Client = auto() Server = auto() dtype_role = pd.api.types.CategoricalDtype(categories=list(ConnectionRoles), orde...
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22,362
Add "semester" as a time/date component to DatetimeIndex
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2018-08-15T08:26:40Z
2020-04-01T03:35:09Z
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NONE
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#### Groupby is missing "semester" ``` from datetime import * import pandas as pd import numpy as np df = pd.DataFrame() days = pd.date_range(start="2017-05-17", end="2017-11-29", freq="1D") df = pd.DataFrame({'DTIME': days, 'DATA': np.random.randint(50, high=80,...
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DOC: update doc-string in Index.rename
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2018-08-15T09:02:50Z
2018-08-19T10:01:25Z
2018-08-19T10:00:46Z
CONTRIBUTOR
null
updated doc-strings with examples - [x] closes #20787 - N/A tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - N/A whatsnew entry
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22,364
TestPeriodIndex.test_resample_empty_dataframe is failed when I pass kwargs to Resampler._groupby_and_aggregate
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2018-08-15T09:34:14Z
2018-08-17T07:59:21Z
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CONTRIBUTOR
null
- [x] closes #22339 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` `test_resample.py::TestPeriodIndex::test_resample_empty_dataframe` triggers new changes
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Resampler.__iter__() not working
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2018-08-15T10:39:14Z
2018-08-22T10:35:36Z
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CONTRIBUTOR
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- [x] closes #15314 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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fixes #22085 (int type pandas.series.index contains float type key bug)
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- [x] closes #22085 - [ ] tests added / passed - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry checks for type using is_float, is_integer_dtype and if key is a float that does not resolve to an equivalent int and Index is int, returns false.
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DataFrame.__setitem__ is broken for SparseArray
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2018-08-15T13:04:51Z
2018-10-13T11:38:04Z
2018-10-13T11:38:04Z
CONTRIBUTOR
null
It doesn't sparsify, and the values are incorrect. I'll fix this in #22325 ```python In [1]: import pandas as pd In [2]: df = pd.DataFrame({"A": [1., None]}) In [3]: df['A'] = pd.SparseSeries(df.A) In [4]: df.A.values Out[4]: array([1., 1.]) In [5]: df = pd.DataFrame({"A": [True, False]}) In [6]...
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DOC: edit docstring example to prevent segfault (#21824)
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2018-08-15T13:49:58Z
2018-08-15T16:11:16Z
2018-08-15T16:09:51Z
MEMBER
null
See https://github.com/pandas-dev/pandas/issues/21824 for the segfault description, changing the example so running the doctests will work: https://github.com/pandas-dev/pandas/pull/19952
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CLN: Simplify Block._astype
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CONTRIBUTOR
null
There's lots of nested logic there (plus 1 more level from https://github.com/pandas-dev/pandas/pull/22343). Would be good to simplify this. The components: 1. argument validation (could maybe do this elsewhere, not a big deal) 2. astyping *to* categorical is special cased. We'll want to remove that in favor of ...
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22,370
apply converting dtypes of arguments
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2018-08-15T16:03:44Z
2018-08-16T13:23:07Z
2018-08-16T13:22:57Z
NONE
null
#### Code Sample, a copy-pastable example if possible In this snippet of code: ```python # Your code here def pwr_offset (n_streams, delta): #print ('n_streams:', n_streams, 'delta:', delta) return 10 * log10 (np.sum (10**(-0.1*e) for e in find_pwr_offsets (n_streams, delta))) df['esno_correction2'] ...
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350,882,441
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22,371
[CLN] remove last cython: nprofile comments
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2
2018-08-15T16:47:17Z
2020-04-05T17:40:23Z
2018-08-16T10:08:10Z
MEMBER
null
Separates out parts of #22287 to troubleshoot persistent Travis failures.
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22,372
Using df.at() for assignment changes views of certain columns, but not all of them
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7
2018-08-15T17:44:42Z
2020-09-22T03:48:01Z
null
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import numpy as np import pandas as pd def f2(seed=789, niter=10): rng = np.random.RandomState(seed=seed) df = pd.DataFrame(index=np.arange(5)) df['x'] = rng.uniform(0, 2, size=5) df['y'] = rng.uniform(0, 2, size=5) df['cos...
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22,373
version 0.23: RangeIndex argument order changed, docs stale
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2018-08-15T17:57:31Z
2020-09-28T15:39:32Z
2020-09-28T15:39:32Z
NONE
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```python >>> import pandas as pd >>> pd.__version__ '0.23.4' >>> pd.RangeIndex(0, 3, 1, 'name') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/mpfluege/.local/miniconda3/envs/pitchwalk/lib/python3.7/site-packages/pandas/core/indexes/range.py", line 74, in __new__ cls...
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22,374
Silent Failure with Partial Rows
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2018-08-15T23:03:21Z
2018-08-28T02:48:51Z
2018-08-28T02:48:51Z
NONE
null
#### I was trying to read a file that looked like this (unbeknownst to me): ```text 1, 2, 1.23, 4.56 3, 1.24, 4.57 4, 1.25, 4.58 ... ``` I wrote some code like this: ```python import pandas as pd pd.read_csv('file.txt').values ``` And the output I got looked liked this: ```python [[nan] [nan] [na...
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ENH: Enable DataFrame.corrwith to compute rank correlations
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2018-08-16T00:14:57Z
2018-12-31T15:50:50Z
2018-12-31T13:17:55Z
MEMBER
null
This PR is to enable `DataFrame.corrwith` to calculate rank correlations in addition to Pearson's correlation (and should hopefully be fully backwards compatible), as well as clarifying functionality in the docstring . An error message is generated if the user specifies a form of correlation that isn't implemented. T...
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22,376
DataFrame.apply fails for string function arguments with additional positional or keyword arguments
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2018-08-16T00:16:50Z
2018-08-23T10:42:55Z
2018-08-23T10:42:55Z
CONTRIBUTOR
null
#### Code sample ```python import pandas as pd df = pd.DataFrame([[1, 2, 3], [1, 2, 3]]) df.apply('sum', axis=1, min_count=1) ``` #### Problem description When we use the ``DataFrame.apply`` method with a string function argument (e.g. 'sum') and provide additional positional or keyword arguments it fails ...
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22,377
BUG: Fix DataFrame.apply for string arg with additional args (#22376)
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2018-08-16T00:26:04Z
2018-08-23T10:42:59Z
2018-08-23T10:42:56Z
CONTRIBUTOR
null
- [x] closes #22376 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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22,378
Fix and test scalar extension dtype op corner case
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3
2018-08-16T02:04:00Z
2020-04-05T17:38:47Z
2018-08-18T07:52:15Z
MEMBER
null
Fixes the following behavior in master: ``` ser = pd.Series(['a', 'b', 'c']) >>> ser + "category" Traceback (most recent call last): File "<stdin>", line 1, in <module> File "pandas/core/ops.py", line 1233, in wrapper return dispatch_to_extension_op(op, left, right) File "pandas/core/ops.py", line...
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22,379
Nothing assigned (except nan) when use `loc`
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2018-08-16T03:02:00Z
2018-08-16T13:55:37Z
2018-08-16T13:55:36Z
NONE
null
``` In [3]: rrDF = pd.DataFrame() In [4]: rrDF.loc[:,'c']=thatDF.c In [5]: rrDF Out[5]: c 0 9 1 8 2 8 ... 18 5 19 9 20 0 In [6]: x Out[6]: result 0 0.0 1 0.0 2 0.0 ... 18 0.0 19 0.0 20 0.0 In [7]: type(x) Out[7]: pandas.core.frame.DataFrame In [8...
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351,042,020
MDExOlB1bGxSZXF1ZXN0MjA4NzM2MDcy
22,380
BUG: fix read_csv to parse timezone correctly
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20
2018-08-16T03:26:31Z
2018-08-22T10:28:26Z
2018-08-22T10:27:16Z
CONTRIBUTOR
null
Use `box=True` for `to_datetime()`, and adjust downstream processing to the change. - [x] closes #22256 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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351,047,415
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22,381
CategoricalBlock.array_dtype out of date?
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2
2018-08-16T04:01:47Z
2019-09-18T01:47:47Z
2019-09-18T01:47:47Z
MEMBER
null
`CategoricalBlock.array_dtype` returns `np.object_`, but the docstring describes `array_dtype` as "the dtype to return if I want to construct this block as an array". Shouldn't the array constructed now be `Categorical`? In which case, shouldn't the dtype here be `self.dtype`? (which matches the base class, and in f...
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351,072,396
MDExOlB1bGxSZXF1ZXN0MjA4NzU3NTUx
22,382
WIP: EA SetArray
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2018-08-16T06:31:29Z
2018-11-23T03:21:47Z
2018-11-23T03:21:47Z
CONTRIBUTOR
null
This is very WIP, but might IMO be helpful in figuring out the EA interfaces, since it has some other requirements than the EAs so far. It makes some way towards #4480 and might be a basis for #21547, where the comments were effectively "make this an EA", e.g. @jreback: > EA is an extension array & a dtype, both of wh...
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351,123,493
MDU6SXNzdWUzNTExMjM0OTM=
22,383
.ne fails with abiguous message if comparing a list of columns containing column name 'dtype'
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2018-08-16T09:22:06Z
2018-12-31T13:19:05Z
2018-12-31T13:19:05Z
NONE
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#### Code Sample, a copy-pastable example if possible ```python df = pd.DataFrame([[0,1,2,'aa'],[0,1,2,'aa'],[0,1,5,'bb'],[0,1,5,'bb'],[0,1,5,'bb'],['cc',4,4,4]], columns=['a','b','c','dtype']) df.loc[:, ['a', 'dtype']].ne(df.loc[:, ['a', 'dtype']]) In [10]: df Out[10]: a b c dtype 0 0 1 2 aa...
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22,384
API: astype mechanism for extension arrays
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2018-08-16T12:30:52Z
2021-10-31T22:03:52Z
null
CONTRIBUTOR
null
In https://github.com/pandas-dev/pandas/pull/22343, we're bumping into a few problems around casting to / from extension arrays. 1. Our current default implementation for `ExtensionArray.astype` doesn't handle target `dtype`s that are extension types (so `extension_array.astype('category')` fails). At the moment, ea...
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351,229,004
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22,385
Mean and std for float32 dataframe
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2018-08-16T14:25:18Z
2021-06-22T04:24:18Z
null
NONE
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#### Code Sample ```python import pandas as pd import numpy as np data = pd.DataFrame(np.ones(60000).astype('float32') * 1e6) print(np.mean(data)) print(np.mean(data.values)) print(np.std(data)) print(np.std(data.values)) ``` which results in the following output ``` 0 999645.0 dtype: float3...
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351,263,511
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22,386
Support ExtensionArrarys for shift
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2018-08-16T15:46:19Z
2018-08-23T10:38:31Z
2018-08-23T10:38:31Z
CONTRIBUTOR
null
This is needed for sparse. I have a separate PR incoming ```python In [2]: import pandas as pd In [3]: pd.Series([1, 2], dtype='Int8').shift() --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-...
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22,387
Support NDFrame.shift with EAs
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2018-08-16T16:06:27Z
2018-08-23T10:38:34Z
2018-08-23T10:38:31Z
CONTRIBUTOR
null
Uses take internally. Closes https://github.com/pandas-dev/pandas/issues/22386 One question: do we want to add `shift` to the interface, and dispatch to that? This just does the right thing at the block level, by writing a `shift` that'll work with an ExtensionArray. CategoricalBlock still overrides `.shift` t...
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22,388
Make EAs for all Block subclasses
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2018-08-16T19:03:36Z
2019-07-09T15:23:22Z
2019-07-09T15:23:22Z
MEMBER
null
A `Block` is basically an Array with `mgr_locs` attached. An `Index` is basically an Array with some fancy indexing and set operations. These should share a bunch of their code. `Block.make_block` behaves essentially the same way as `Index._shallow_copy`. `blocks.make_block` behaves like `Index.__new__`. Some `v...
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22,389
Series[sparse].to_sparse messes up length
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0
2018-08-16T19:53:32Z
2018-10-13T11:38:04Z
2018-10-13T11:38:04Z
CONTRIBUTOR
null
```python In [23]: a = pd.Series(pd.SparseArray([1, 2, None, 2])) In [24]: b = a.to_sparse() In [25]: len(a), len(b) Out[25]: (4, 3) In [26]: b Out[26]: 0 1.0 1 2.0 2 2.0 3 dtype: float64 IntIndex Indices: array([0, 1, 2], dtype=int32) ``` Fixing in https://github.com/pandas-dev/pandas/p...
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22,390
Fix arithmetic errors with timedelta64 dtypes
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5
2018-08-16T20:35:04Z
2018-08-23T15:46:31Z
2018-08-23T10:37:07Z
MEMBER
null
Kind of surprising, but I don't see any Issues for these bugs. Might be because many of them were found after parametrizing arithmetic tests, so instead of Issues we had xfails. xref #20088 xref #22163 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] wha...
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22,391
Overflow warning when using HDFStore to save large dataframe as table format.
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1
2018-08-17T01:06:44Z
2018-08-17T02:40:25Z
2018-08-17T02:40:24Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Your code here self.feature_concated.to_hdf(self.h5_result_name, key='feature_data', mode='a', format='table') self.feature_concated.to_hdf(self.h5_result_name, key='feature_data', mode='a') ``` #### Problem description [this should explain **...
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22,392
Overflow problem when writing large dataframe to HDF5 with table format.
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2018-08-17T01:08:50Z
2018-08-17T03:23:43Z
2018-08-17T02:47:05Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Your code here self.feature_concated.to_hdf(self.h5_result_name, key='feature_data', mode='a', format='table') self.feature_concated.to_hdf(self.h5_result_name, key='feature_data', mode='a') ``` #### Problem description I need to save a large Da...
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22,393
Suggestion: implement Q-Q plots
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3
2018-08-17T01:40:50Z
2018-08-21T14:43:59Z
2018-08-21T14:43:42Z
MEMBER
null
I see that there was some discussion of this years ago (PR #1501), but was wondering if there are any plans of implementing these in the future. One thought would be to have `qqplot` be a `Series` method which optionally takes another `Series` as an argument. If this argument is missing then `qqplot` could fall bac...
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22,394
Bug in DataFrame.drop_duplicates for empty DataFrame throws error
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2018-08-17T02:56:14Z
2018-08-23T13:25:40Z
2018-08-23T13:13:24Z
CONTRIBUTOR
null
- [x] closes #20516 - [x] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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22,395
DOC: add pd.set_eng_float_format function in the API reference
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2018-08-17T07:21:09Z
2018-08-20T06:31:34Z
2018-08-20T05:53:08Z
NONE
null
- [x] closes #15610 - [N/A] tests added / passed - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [N/A] whatsnew entry
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CircleCI 2.0 followup
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2018-08-17T11:21:48Z
2018-10-26T12:07:43Z
2018-10-26T12:07:43Z
CONTRIBUTOR
null
1. Set up test summary for failures 2. Document running locally with docker and `circle-ci` command
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22,397
Make Series.shift always a copy?
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3
2018-08-17T11:33:52Z
2018-09-15T12:25:21Z
2018-09-15T12:25:21Z
CONTRIBUTOR
null
Right now, `Series.shift(0)` will just return the series. Shifting for all other periods induces a copy: ```python In [1]: import pandas as pd In [2]: a = pd.Series([1, 2]) In [3]: a.shift(1) is a Out[3]: False In [4]: a.shift(0) is a Out[4]: True ``` Should we defensively copy on `0` as well, for a ...
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DOC: html build of class docstrings without autosummary shows None
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2018-08-17T11:55:00Z
2018-08-18T19:29:21Z
null
MEMBER
null
We have some hacks to have class docstring pages without needing to build pages for all its methods/attributes. For 0.22 docs this was working nicely: https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.Int64Index.html But with 0.23, this now lists 'None' (which is a bit ugly on the page, but...
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351,672,655
MDExOlB1bGxSZXF1ZXN0MjA5MjA4MTE0
22,399
Progress bar gbq
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9
2018-08-17T17:15:10Z
2018-08-31T16:04:53Z
2018-08-31T16:04:43Z
NONE
null
Add variable for progress bar
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351,677,635
MDU6SXNzdWUzNTE2Nzc2MzU=
22,400
assert_series_equal(..., check_exact=True) reports identically constructed Series are not equal.
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2018-08-17T17:33:07Z
2021-06-22T04:28:03Z
null
NONE
null
#### Code Sample ```python #!/usr/bin/env python import numpy as np import pandas as pd import pandas.testing as pdt # Notice these are identically constructed objects x = pd.Series([0, 0.0131142231938, 1.77774652865e-05, np.array([0.4722720840328748, 0.4216929...
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351,695,783
MDU6SXNzdWUzNTE2OTU3ODM=
22,401
Memory issues with `multiprocessing` and GroupBy on multiindex DataFrame
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2018-08-17T18:29:04Z
2018-08-17T21:05:40Z
2018-08-17T20:08:17Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import multiprocessing as mp import numpy as np %load_ext memory_profiler ``` ```python def working_apply_function(x): """ Working version of apply function """ var_a = x["var_a"].values var_b = x[...
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22,402
ENH: implement pd.Series.corr(method="distance")
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8
2018-08-17T19:53:58Z
2020-07-28T21:50:50Z
2019-01-24T03:50:07Z
MEMBER
null
Distance correlation (https://en.wikipedia.org/wiki/Distance_correlation) is a powerful yet underused technique for comparing two distributions that I think would make a very nice addition to the existing correlation methods in `pandas`. For one, these measures have the unique property that two random variables $X$ an...
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351,722,714
MDExOlB1bGxSZXF1ZXN0MjA5MjQ1NTE5
22,403
Feat/bubble plot
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16
2018-08-17T20:07:42Z
2018-12-23T23:16:39Z
2018-12-23T23:16:39Z
NONE
null
- [x] Closes #16827 partially : makes bubble plots possible by passing a column name as an argument ''s'' - [x] Replaces PR #20572 (updated and improved) - [x] 2 tests added & passed - [x] Passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] Whatsnew entry added for 0.24.0
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22,404
Updating `DataFrame.mode` docstring.
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2018-08-17T20:31:39Z
2018-09-30T04:22:37Z
2018-09-30T04:22:37Z
MEMBER
null
Supersedes #20241 (source branch does not exist anymore).
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22,405
Consider directives when validating docstrings parameters
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1
2018-08-17T20:36:27Z
2018-08-23T16:04:04Z
2018-08-23T16:04:04Z
MEMBER
null
When running the docstring validation script, errors are mistakenly reported if parameters have a `deprecated`, `versionadded` or `versionchanged` directive. For example, when running `./scripts/validate_docstrings.py pandas.DataFrame.mode`, the next error is returned by the script: ``` #########################...
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22,406
CLN: dedent else part of Series._get_with
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2018-08-17T22:16:15Z
2018-10-27T08:19:10Z
2018-08-20T10:41:54Z
CONTRIBUTOR
null
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` There is a gigantic and unneeded ``else`` clause in ``Series._get_with`` and it makes the code hard to read. This PR removes the else clause and dedents its content one level. This helps readability.
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351,798,258
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22,407
df-df.mean(axis=1) gives Memory Error
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2
2018-08-18T07:11:35Z
2018-08-18T11:26:47Z
2018-08-18T10:47:05Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np df=pd.DataFrame(np.random.rand(150000,2)) s=df-df.mean(axis=1) MemoryError: ``` #### Problem description The snippet above fails in a Linux machine with 32gb of memory. Unless I am missing something, ther...
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22,408
Changes to validate_docstring script to be able to check all docstrings at once
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14
2018-08-18T13:28:48Z
2018-10-13T18:43:10Z
2018-10-13T18:20:49Z
MEMBER
null
- [ ] closes #xxxx - [X] tests added / passed - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry This PR includes two main changes: 1. When calling the `scripts/validate_docstrings.py` script without parameters, it returns a JSON with the validation of all docstrings. 2. R...
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351,828,526
MDU6SXNzdWUzNTE4Mjg1MjY=
22,409
selection within the DataFrame by empty series loses column schema
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2018-08-18T15:24:02Z
2018-08-18T21:48:19Z
2018-08-18T21:48:19Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python #!/usr/bin/env python import numpy as np import pandas as pd df1 = pd.DataFrame(columns=['A', 'B', 'C']) df1[pd.Series()].shape == df1.shape # False df2 = pd.DataFrame(index=['A', 'B', 'C']) df2[pd.Series()].shape == df2.shape # True df3 = pd....
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https://api.github.com/repos/pandas-dev/pandas/issues/22410
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351,844,385
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22,410
Feature Request: merge_asof with interpolation
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2018-08-18T19:13:35Z
2021-06-22T04:29:42Z
null
NONE
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`merge_asof` with interpolation would be a new feature. When you merge `df1` and `df2`, the merged columns of `df2` would not be the exact "asof" values as in `df2`, but the interpolated values (for example in a linearly time-weighted fashion). Define ``` np.random.seed(0) start = pd.Timestamp("2018-07-23 09:00...
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https://api.github.com/repos/pandas-dev/pandas/issues/22411
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351,853,579
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22,411
Use fused types to avoid tempita
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2018-08-18T21:26:59Z
2018-10-23T02:49:06Z
2018-10-23T02:26:44Z
MEMBER
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A lot of the cython code is templated to avoid duplication, but is not especially readable (see anything in _libs with filename ending in ".pxi.in"). AFAICT we can use [fused types](https://cython.readthedocs.io/en/latest/src/userguide/fusedtypes.html#type-checking-specializations) and cython will internally generat...
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