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https://api.github.com/repos/pandas-dev/pandas/issues/29614
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522,661,931
MDU6SXNzdWU1MjI2NjE5MzE=
29,614
Cannot load CSV file into SQL using to_sql where data contains literal "NA"
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2
2019-11-14T06:51:40Z
2019-11-17T19:49:28Z
2019-11-17T19:49:23Z
NONE
null
Error ``` runfile('/Users/********/Documents/GitHub/********/Python/temp.py', wdir='/Users/********/Documents/GitHub/********/Python') 1 records processed. 2 records processed. 3 records processed. Traceback (most recent call last): File "<ipython-input-14-3bcf066bc8aa>", line 1, in <module> runfile('/U...
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522,832,709
MDU6SXNzdWU1MjI4MzI3MDk=
29,615
ENH: Add suffixes for pd.concat when axis=1
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2019-11-14T12:42:04Z
2019-11-14T16:35:14Z
2019-11-14T16:35:01Z
MEMBER
null
When I was trying to horizontally concatenate several DataFrames which contain some overlapping column names, and those overlapping columns would remain unchanged. However, it might be quite useful to have a `suffixes` argument as e.g `DataFrame.merge` has in practice, so that could easily add meaningful suffix to dist...
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522,883,460
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29,616
Triage guide
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2019-11-14T14:09:50Z
2019-11-17T15:38:15Z
2019-11-17T14:25:05Z
CONTRIBUTOR
null
Discussed on the dev call yesterday. cc @pandas-dev/pandas-core. Any sections I'm missing? Any statements you disagree with? xref https://github.com/pandas-dev/pandas-governance/issues/11 (writing down a policy for triaging once we have one).
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MDU6SXNzdWU1MjI5MTQ4ODc=
29,617
BUG: groupby apply with head(1) raises keyerror with datetime grouper
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4
2019-11-14T15:01:34Z
2020-08-03T23:19:27Z
2020-08-03T23:19:27Z
CONTRIBUTOR
null
This is a very strange error with a long traceback. I found #15680 and #11324 mentioning similar things, but neither seem to cover the behavior here #### Code Sample, a copy-pastable example: ```python import datetime import pandas as pd recs = [{'LIVE': 1, 'ITEM': '001', 'DATE': datetime...
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522,946,244
MDU6SXNzdWU1MjI5NDYyNDQ=
29,618
Int64 can't be used in pandas.eval()
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2019-11-14T15:51:32Z
2020-11-10T13:43:17Z
null
NONE
null
This code works fine ```python import pandas as pd d = pd.DataFrame([[1, 2], [3, 4]], columns=['a', 'b'], dtype="Float64") d.eval('c = b - a', inplace=True) ``` ### This code fails with the following stacktrace below ```python d = pd.DataFrame([[1, 2], [3, 4]], columns=['a', 'b'], dtype="Int64") d.eval('c ...
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29,619
Update nullable integer docs with None instead of np.nan
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2019-11-14T16:00:41Z
2019-11-14T18:26:02Z
2019-11-14T18:07:11Z
CONTRIBUTOR
null
Update nullable integer docs with None instead of np.nan - [X] closes #29599 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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REF: eliminate statefulness in FrameApply
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2019-11-14T18:42:01Z
2019-11-15T16:10:30Z
2019-11-15T14:53:30Z
MEMBER
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29,621
BLD:can't install dev requirements after upgrading to python 3.8.0
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2019-11-14T19:56:07Z
2020-10-15T00:11:03Z
2019-11-15T14:57:32Z
MEMBER
null
After upgrading to python 3.8.0. I purged my entire venv (pip). So I decided to reinstall all of the packages. And while running the command ```python -m pip install -r requirements-dev.txt``` I got this output: ``` Building wheels for collected packages: bottleneck, pyarrow Building wheel for bottleneck (PEP 51...
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29,622
Travis 3.6 Slow Build Test Failures - BS4 Issue
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2019-11-14T20:58:53Z
2020-04-11T01:32:21Z
2020-04-11T01:32:20Z
CONTRIBUTOR
null
`test_thousands_macau_index_col` in `test_html` fails using beautifulsoup4 version 4.8.1 and passes using version 4.7.1. Example failures: https://travis-ci.org/pandas-dev/pandas/jobs/611742966 As pointed out by @jreback in this PR - https://github.com/pandas-dev/pandas/pull/29603 Example failing build pre my...
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29,623
BUG: incorrect output of first('1M') in case if first index is the last day of the month
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2019-11-14T22:17:40Z
2020-12-19T02:14:08Z
2020-12-19T02:14:08Z
CONTRIBUTOR
null
#### Code Sample ```python x = pd.Series(1, index=pd.bdate_range('2010-03-31', periods=100)) print(x.first('1M')) # Returns March and April print(x.first('2M')) # Returns March, April and May # etc... ``` #### Problem description In case if the first index of the series falls on the last day of the month,...
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523,144,943
MDU6SXNzdWU1MjMxNDQ5NDM=
29,624
Boolean string methods on empty Series return object dtype
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2019-11-14T22:38:46Z
2019-11-17T23:06:35Z
2019-11-17T23:06:35Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python In [7]: pd.Series([], dtype=object).str.isalnum() Out[7]: Series([], dtype: object) ``` #### Problem description On empty series, we return an object-dtype result, rather than bool. I might expect this to be a boolean dtype to match the non-empt...
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CLN: Make non-empty **kwargs in Index.__new__ fail instead of silently dropped
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2019-11-14T22:56:59Z
2019-11-17T10:23:50Z
2019-11-17T10:23:44Z
CONTRIBUTOR
null
In #29624 I made change so random kwargs weren't passed to ``Index._simple_new``. I'v found out after merging that the selected solution dropped non-empty kwargs, which isn't great either. This version ensures that passing non-accepted kwargs raises, so ``pd.Index(['a'], foo="foo")`` raises a TypeError. Instead of r...
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CLN: groupby
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2019-11-15T00:22:48Z
2019-11-18T01:57:20Z
2019-11-18T01:57:11Z
MEMBER
null
splitting this off of branches that do non-CLN stuff
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CLN: reshape
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2019-11-15T01:23:24Z
2019-11-20T15:35:29Z
2019-11-20T13:02:06Z
MEMBER
null
I think some of this can be made easier to reason about (like with making FrameApply less stateful), as a preliminary this is just some mild annotations etc
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REF: de-duplicate _apply_to_group
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2019-11-15T01:30:05Z
2019-11-17T23:20:48Z
2019-11-17T23:00:12Z
MEMBER
null
functionally identical code in SeriesGrouper.get_result and SeriesBinGrouper.get_result, now shared.
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2019-11-15T02:36:03Z
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TST: fix DecimalArray._reduce kludges
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TST: add test case for user-defined function taking correct path in groupby transform
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2019-11-15T03:40:58Z
2019-11-20T15:16:23Z
2019-11-20T12:49:25Z
MEMBER
null
I kept this one in place because I thought fast_path could be user-defined (see comment on L1425), but it turns out we define it in _define_paths a few lines above. So this try/except is unnecessary.
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MDExOlB1bGxSZXF1ZXN0MzQxMzY1ODg4
29,632
REGR: fix DataFrame.agg case with list-like return value
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2019-11-15T09:07:00Z
2019-11-18T07:55:25Z
2019-11-18T07:55:22Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/pull/29587 cc @jbrockmendel
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523,420,546
MDU6SXNzdWU1MjM0MjA1NDY=
29,633
Series.str.rsplit not working with regex patterns (v 0.24.2 and 0.25.2)
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2019-11-15T11:36:55Z
2020-05-03T20:34:31Z
null
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd S = pd.Series(['1+1=2']) S.str.rsplit(r'\+|=') # returns: 0 [1+1=2] S.str.rsplit(r'\+|=', expand=True) # returns: 0 0 1+1=2 ``` #### Problem description The `str.rsplit` method is not recognizing regex patt...
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523,440,780
MDU6SXNzdWU1MjM0NDA3ODA=
29,634
apply function have some problem
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2019-11-15T12:22:46Z
2019-11-28T05:58:08Z
2019-11-28T05:58:08Z
NONE
null
```python import pandas as pd pd.__version__ >> '0.25.0' # Your code here def test_in_test(val): return def test(row): print(1) print(2) print('val', row[0]) return pd.Series([1,2,3,4,5,6,7]) test_df = pd.DataFrame({'a':range(2), 'b':range(2,2)}) test_df >> a | b 0 | 2 1 | ...
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523,441,969
MDU6SXNzdWU1MjM0NDE5Njk=
29,635
Gropuby using pd.Series.mode throws error when `by` column contains values with same starting value
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2019-11-15T12:25:29Z
2021-08-12T21:40:42Z
null
NONE
null
#### Groupby with pd.Series.mode throws error, if `by` values starts with a value from previous row. ```python df2 = pd.DataFrame({ "Name" : ['Thomas', 'Thomas', 'Thomas John'], "Credit" : [1200, 1300, 900], "Mood" : ['sad', 'happy', 'happy'] }) aggrFDColumnDetails = { 'Mood':pd.Series.mode, ...
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523,508,948
MDExOlB1bGxSZXF1ZXN0MzQxNDk4NDkx
29,636
Adding (Insert or update if key exists) option to .to_sql #14553
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2019-11-15T14:43:09Z
2021-11-18T02:24:18Z
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This PR adds SQL `upsert` functionality to the `to_sql` method. As outlined in the issue [discussion](https://github.com/pandas-dev/pandas/issues/14553#issuecomment-536743090), there will be 2 types of upsert: 1. `upsert_delete` - prioritizes new data from incoming dataframe. Deletes clashing records in the databas...
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MDExOlB1bGxSZXF1ZXN0MzQxNTAzMTgw
29,637
REF/API: String methods refactor
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2019-11-15T14:53:32Z
2019-11-16T22:33:22Z
2019-11-16T22:33:01Z
CONTRIBUTOR
null
edit: probably closing this: See https://github.com/pandas-dev/pandas/pull/29640 for a simpler alternative. In preparation for https://github.com/pandas-dev/pandas/pull/29597, this changes the string methods implemetation to * Use masks to apply the function just to valid values. * Disables all unnecessary infer...
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MDU6SXNzdWU1MjM1NjQyMjM=
29,638
Type Error Bug Despite Using Multiple Versions of Pandas
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2019-11-15T16:21:41Z
2020-03-02T13:55:36Z
2020-03-02T13:55:35Z
NONE
null
I have a data set of multiple work lists for my job and I am trying to sort values before dropping duplicates, but the code below give me this error: import pandas as pd Disputes = Disputes.sort_values(axis=1, by=['Invoice Number', 'Report Date'], inplace = True).drop_duplicates(subset=['Invoice Number', 'Report Da...
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MDExOlB1bGxSZXF1ZXN0MzQxNTUxMzgx
29,639
Convert bins to numeric for histogram if a string
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2019-11-15T16:45:16Z
2021-10-05T23:19:12Z
2021-01-09T22:50:11Z
NONE
null
Fixes #29484 - [ ] closes #29484 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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Refactor string methods for StringArray + return IntegerArray for numeric results
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2019-11-15T17:06:59Z
2019-11-19T16:22:42Z
2019-11-19T16:22:38Z
CONTRIBUTOR
null
Intended as an alternative to https://github.com/pandas-dev/pandas/pull/29637. This is a much smaller change. It only changes the codepath for StringDtype. I think this is OK since someday (well down the road) we'll want to deprecate the `.str` accessor on object-dtype Series. When we enforce that, we can just de...
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REF: make _aggregate_series_pure_python extraction behave like the cython version
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2019-11-15T17:58:00Z
2019-11-18T15:59:36Z
2019-11-18T00:27:07Z
MEMBER
null
After some investigation it turns out that the DTA casting in `_try_cast` is made necessary because we incorrectly pass datetime64tz to `_aggregate_series_fast`, which calls the cython `libreduction.SeriesGrouper`, which casts the input to `ndarray`, losing the timezone. By not going through the cython path for dateti...
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REF: remove unnecessary _try_cast calls
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2019-11-15T18:04:59Z
2019-11-16T22:19:11Z
2019-11-16T20:58:21Z
MEMBER
null
Orthogonal to #29641. _try_cast is a no-op if passed a scalar, so is unnecessary for some reduction/aggregation ops. After #29641 i think we can get rid of more of these calls.
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CI: postgresql job failing
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2019-11-15T18:56:33Z
2019-11-16T16:47:14Z
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CONTRIBUTOR
null
e.g. https://travis-ci.org/pandas-dev/pandas/jobs/612501204 ``` installing dbs psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"? The command "ci/setup_env.sh" failed and exited with 2 during ...
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CI: lint checks failing
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2019-11-15T18:57:37Z
2019-11-16T01:24:05Z
2019-11-16T01:24:05Z
CONTRIBUTOR
null
e.g. https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=20961 ``` flake8 --version 3.7.9 (flake8-comprehensions: 3.1.0, mccabe: 0.6.1, pycodestyle: 2.5.0, pyflakes: 2.1.1) CPython 3.7.3 on Linux Linting .py code ##[error]./pandas/io/pytables.py(1344,21): error C414: Unnecessary list call within sorte...
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29,645
Inconsistent behavior with None between "normal" pandas functions and groupby's last/first/nth
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2019-11-15T20:17:14Z
2021-09-06T21:50:54Z
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NONE
null
#### Code Sample, a copy-pastable example if possible ```python > s1 = pd.Series(['x', 'y', None], index=[0, 0, 0]) > s1.isna() 0 False 0 False 0 True dtype: bool > s2 = pd.Series(['x', 'y', np.nan], index=[0, 0, 0]) > s2.isna() 0 False 0 False 0 True dtype: bool # But groupby do...
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CI: fix flake C413, C414, C416 errors
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2019-11-15T20:17:55Z
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MEMBER
null
- [x] closes #29644 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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29,647
Using .iloc on a sparse DataFrame results in a copy
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2019-11-15T20:26:36Z
2019-11-16T20:26:37Z
2019-11-16T20:26:37Z
CONTRIBUTOR
null
```python df = pd.DataFrame({'A': [0.1, 0.2, 0.3], 'B': [1.0, 2.0, 3.0]}, dtype='Sparse[float64, nan]') df1 = df.iloc[0] df1._is_view ``` #### Problem description When calling `.iloc` on a sparse DataFrame, it seems to return a copy rather than a view. Is this expected behavior? #### Expected Output Gett...
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CI: Adding GitHub action to assign issues based on comment
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2019-11-15T21:17:57Z
2019-11-17T14:07:03Z
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MEMBER
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Currently, only maintainers and triagers can assign issues. This implements a hack, so when any contributor writes the keyword `take` in an issue, GitHub actions will automatically assign the issue to the commenter. I think this should be very helpful once people start to assign issues to themselves, since adding...
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29,649
Feature Request: pandas merge - validation of expected sets
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2019-11-15T21:58:56Z
2021-07-23T04:35:29Z
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CONTRIBUTOR
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#### Validate the relationship of two DataFrames being joined in terms of set theory Take this example: ```python df1 = DataFrame({"col1": [1, 2, 3], "col_left": ["a", "b", "c"]}) df2 = DataFrame({"col1": [2, 3, 4], "col_right": ["d", "e", "f"]}) test = merge( df1, df2, on="col1", how="outer"...
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29,650
read_fwf raises BytesWarning when running with -bb
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2019-11-15T22:02:45Z
2019-11-22T15:35:22Z
2019-11-22T15:35:22Z
CONTRIBUTOR
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#### Code Sample, a copy-pastable example if possible ```python from io import StringIO import pandas input = StringIO("some\tcontent\n") pandas.read_fwf(input) ``` #### Problem description If you run the above code with ``-bb``, it crashes with ``BytesWarning``: ``` % python -bb repro.py Traceba...
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ENH: merge set validation (#29649)
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2019-11-15T22:33:59Z
2019-11-17T00:49:30Z
2019-11-17T00:49:30Z
CONTRIBUTOR
null
Added new feature to pandas merge to validate "set-theory" relationship between left and right dataframes. Updated docs and tests for new feature. - [x] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry ...
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TYP: core.computation mostly
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2019-11-15T23:48:54Z
2019-11-16T22:24:19Z
2019-11-16T20:55:58Z
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CI: bump mypy 0.730
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1
2019-11-16T01:39:31Z
2019-11-20T13:09:07Z
2019-11-17T14:27:19Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/pull/29188#issuecomment-554524916
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CI: Format isort output for azure
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5
2019-11-16T02:59:26Z
2019-12-25T20:27:02Z
2019-12-06T01:10:29Z
CONTRIBUTOR
null
- [x] closes #27179 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Current behaviour on master of isort formatting: ![image](https://user-images.githubusercontent.com/16733618/69010035-12c41f80-0953-11ea-8e70-4d17e8dec943.png) Fini...
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CI: Fix error when creating postgresql db
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2019-11-16T02:59:58Z
2019-11-16T16:47:14Z
2019-11-16T16:47:14Z
MEMBER
null
- [X] closes #29643 Not sure if this makes sense, but let's try if this is the problem.
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TYP: annotations in core.indexes
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2019-11-16T04:12:20Z
2019-11-16T22:23:33Z
2019-11-16T20:49:41Z
MEMBER
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Changes the behavior of get_objs_combined_axis to ensure that it always returns an Index and never `None`, otherwise just annotations and some docstring cleanup
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BUG: resolved problem with DataFrame.equals() (#28839)
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3
2019-11-16T08:47:17Z
2019-11-19T16:44:36Z
2019-11-19T13:31:14Z
CONTRIBUTOR
null
The function was returning True in case shown in added test. The cause of the problem was sorting Blocks of DataFrame by type, and then mgr_locs before comparison. It resulted in arranging the identical blocks in the same way, which resulted in having the same two lists of blocks. Changing sorting order to (mgr_loc...
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Mcmali travis
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2019-11-16T11:29:43Z
2019-11-16T11:36:57Z
2019-11-16T11:30:07Z
CONTRIBUTOR
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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Fix Postgres Travis CI
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2019-11-16T11:30:21Z
2019-11-16T11:37:27Z
2019-11-16T11:30:37Z
CONTRIBUTOR
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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29,660
can nod concatenate character 'm' and a series
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2019-11-16T12:29:49Z
2019-11-16T18:02:50Z
2019-11-16T18:02:36Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd df = pd.DataFrame({"a": [1, 2, 3], }) print("m" + df["a"].astype(str)) ``` #### Problem description ``` Traceback (most recent call last): File "D:/test/plot1.py", line 4, in <module> print("m" + df["a"].astype(str))...
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CI: Forcing GitHub actions to activate
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2019-11-16T14:56:22Z
2019-11-16T20:39:15Z
2019-11-16T20:39:06Z
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GitHub actions won't start running until the first action is committed. This PR adds a simple action with an echo, so we can activate GitHub actions risk free, and when we move an actual build, the action will run in the PR, and we can see that it works. Tested this action in a test repo, to make sure it works: h...
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2019-11-16T18:17:55Z
2019-11-16T20:40:46Z
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- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry ref https://github.com/pandas-dev/pandas/issues/29547
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2019-11-16T19:11:22Z
2019-11-16T20:40:21Z
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- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry continuation of https://github.com/pandas-dev/pandas/pull/29571 ref #29547
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CI: Unify pytest versions across builds
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2019-11-17T03:04:04Z
2019-11-21T13:06:07Z
2019-11-21T13:06:07Z
MEMBER
null
May be I'm missing something, but is there a reason to use different pytest versions in our CI builds? I see we're using those in the dependencies files: - pytest - pytest>=4.0.2 - pytest>=4.0.2,<5.0 - pytest=4.5.0 - pytest>=5.0.0 - pytest>=5.0.1 Since pytest is not a pandas dependency, but just a tool we use,...
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2019-11-17T03:28:29Z
2019-11-17T15:38:11Z
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Some annotations. I'm finding that annotations in this directory are really fragile; adding a type to one thing will cause a mypy complaint in somewhere surprising.
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Extension Module Compat Cleanup
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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TYP: core.computations.scope
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2019-11-17T04:15:11Z
2019-11-21T19:59:09Z
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mypy does _not_ play nicely with DeepChainMap. @WillAyd @simonjayhawkins any ideas about the 4 places where i had to put `# type: ignore`? Made `_update` private just to make it easier to reason about this thing
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parameter "na_values" in read_excel() not effective when reading #DIV/0!
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2019-11-17T08:58:17Z
2020-05-08T00:41:39Z
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#### Code Sample, a copy-pastable example if possible ```python naValues = '' testdf = pd.read_excel('read_excel_bug.xlsx', sheet_name=0,header=0, names=None, index_col=None, usecols=None, squeeze=False, dtype=None, engine=None, converter...
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ENH: Add suffixes argument for pd.concat
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2019-11-17T10:15:30Z
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- [x] closes #21791, xref #29615 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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523,981,370
MDExOlB1bGxSZXF1ZXN0MzQxODUwMzkw
29,670
BUG: extra leading space in to_string when index=False
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13
2019-11-17T12:51:05Z
2020-02-12T00:34:23Z
2020-02-12T00:34:22Z
MEMBER
null
- [x] closes #24980 , xref #28538 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry I still see people posting issue for the change of behaviour in `to_string(index=False)` on pandas such as #28538 , so I think it migh...
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29,671
CI: Speed up coverage tests by splitting files
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17
2019-11-17T15:02:55Z
2021-07-23T04:38:30Z
null
MEMBER
null
In #28531 we started to parallelize tests in the CI by file. Meaning that each file in `pandas/tests/` will be assigned to a core, and will run fully there. Before, each individual test was assigned to a core. This makes things much simpler, since tests that cannot run in parallel just need to live in the same file. Bu...
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524,010,951
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29,672
REF: align transform logic flow
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1
2019-11-17T16:40:28Z
2019-11-19T15:20:55Z
2019-11-19T13:30:18Z
MEMBER
null
Implement SeriesGroupBy._transform_general to match DataFrameGroupBy._transform_general, re-arrange the checks within the two `transform` methods to be in the same order and be more linear. Make the two _transform_fast methods have closer-to-matching signatures
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29,673
CI: Pin black to version 19.10b0
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2
2019-11-17T16:59:06Z
2019-12-25T20:24:59Z
2019-11-17T22:48:18Z
CONTRIBUTOR
null
This will pin black version in ci and for local dev. (This will avoid code checks failing when a new black version is released) As per comment from @jreback here https://github.com/pandas-dev/pandas/pull/29508#discussion_r346316578
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29,674
CI: Use bash for windows script on azure
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1
2019-11-17T17:59:27Z
2019-12-25T20:35:11Z
2019-11-19T04:06:58Z
CONTRIBUTOR
null
- Towards #26344 - This makes `windows.yml` and `posix.yml` steps pretty similar and they could potentially be merged/reduce duplication? (Will leave this for a separate PR) - We also now use `ci/run_tests.sh` for windows test stage. Reference https://github.com/pandas-dev/pandas/pull/27195 where I began this.
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29,675
TYP: Add type hint for BaseGrouper in groupby._Groupby
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2019-11-17T18:10:47Z
2019-11-18T06:48:39Z
2019-11-17T20:55:54Z
CONTRIBUTOR
null
Add a type hint in class ``_Groupby`` for ``BaseGrouper`` to aid navigating the code base.
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CI: Clipboard Test Failures on Travis
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3
2019-11-17T18:12:01Z
2020-01-15T13:40:35Z
2020-01-15T13:40:35Z
CONTRIBUTOR
null
``` [gw1] linux -- Python 3.6.6 /home/travis/miniconda3/envs/pandas-dev/bin/python data = '👍...' @pytest.mark.single @pytest.mark.clipboard @pytest.mark.skipif(not _DEPS_INSTALLED, reason="clipboard primitives not installed") @pytest.mark.parametrize("data", ["\U0001f44d...", "Ωœ∑´...", "abcd..."...
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CLN: parts of #29667
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1
2019-11-17T19:49:22Z
2019-11-18T00:46:42Z
2019-11-18T00:20:37Z
MEMBER
null
Breaks off easier parts
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DEPS: Unifying testing and building dependencies across builds
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2019-11-17T20:19:47Z
2019-11-21T13:07:04Z
2019-11-21T13:06:07Z
MEMBER
null
- [X] closes #29664 In our CI builds we're using different versions of pytest, pytest-xdist and other tools. Looks like Python 3.5 was forcing part of this, since some packages were not available. In this PR I standardize the tools and versions we use in all packages, with only two exceptions: - In 32 bits we in...
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524,047,685
MDExOlB1bGxSZXF1ZXN0MzQxODk3NTcw
29,679
CLN: Simplify black command in Makefile
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1
2019-11-17T21:10:33Z
2019-11-17T22:48:55Z
2019-11-17T22:47:52Z
MEMBER
null
Follow up to #29607 where `exclude` was added to `pyproject.toml`, so it no longer needs to be explicitly specified. Missed this reference; checked for additional missed references but didn't find any.
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MDExOlB1bGxSZXF1ZXN0MzQxOTAwMTIw
29,680
Bug fix GH 29624: calling str.isalpha on empty series returns object …
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1
2019-11-17T21:32:41Z
2019-11-18T04:55:50Z
2019-11-17T23:06:35Z
CONTRIBUTOR
null
…dtype, not bool Added dtype=bool argument to make _noarg_wrapper() return a bool Series - [x] closes #29624 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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29,681
BUG: IndexError in __repr__
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2
2019-11-17T22:08:29Z
2019-11-17T23:15:28Z
2019-11-17T23:01:50Z
MEMBER
null
By avoiding that `IndexError`, we can get rid of an `except Exception` in `io.pytables`
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29,682
TYP: add string annotations in io.pytables
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2019-11-17T23:42:21Z
2019-11-18T01:28:47Z
2019-11-18T00:34:45Z
MEMBER
null
This file is pretty tough, so for now this just goes through and adds `str` annotations in places where it is unambiguous (e.g. the variable is passed to `getattr`) and places that can be directly reasoned about from there.
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29,683
CI: Fixing error in code checks in GitHub actions
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3
2019-11-18T02:50:06Z
2019-11-18T04:41:16Z
2019-11-18T04:41:16Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/pull/29546#issuecomment-554807243 Looks like the code in one of the checks in `ci/code_checks.sh` uses another encoding for spaces and other characters. I guess it was generated from Windows, Azure-pipelines is not sensitive to the different encoding, but GitHub actions is. ...
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29,684
OutOfBoundsDatetime for big-endian np.datetime64 arrays
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2019-11-18T12:44:53Z
2020-01-14T12:52:26Z
2020-01-14T12:52:26Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python ipdb> value = np.array([np.datetime64(1, 'ms')], dtype="<M8[ms]") ipdb> pd.Series(value) 0 1970-01-01 00:00:00.001 dtype: datetime64[ns] ipdb> value = np.array([np.datetime64(1, 'ms')], dtype=">M8[ms]") ipdb> pd.Series(value) *** pandas._libs.t...
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CI: Inconsistencies in the CI tests
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2019-11-18T13:04:48Z
2019-12-31T16:25:11Z
null
MEMBER
null
Not sure if anyone know exactly what we are testing, but after removing Python 3.5 and some other old stuff, I think we've got lots of builds testing almost the same things, and the lack of a clear structure is preventing us from finding inconsistencies easily. Some things that seem wrong: - I don't think we're run...
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29,686
API: any/all in context of boolean dtype with missing values
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2019-11-18T14:23:11Z
2019-12-12T13:24:24Z
2019-12-12T13:24:24Z
MEMBER
null
In the new missing values support, and especially while implementing the BooleanArray (https://github.com/pandas-dev/pandas/pull/29555/), the question comes up: what should `any` and `all` do in presence of missing values? *edit from Tom: Here's a proposed table of behavior* | case | input ...
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'sort_index"does not work with 'pd.set_option('mode.use_inf_as_na',True)'
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2021-05-31T14:27:04Z
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``` In [12]: pd.set_option('mode.use_inf_as_na',False) In [13]: df Out[13]: B 2018-09-25 14:47:31.500 0.0 2018-04-03 22:55:13.000 1.0 2018-09-04 09:10:07.500 2.0 2018-11-30 10:32:08.000 NaN 2018-03-27 14:21:12.500 4.0 2018-09-28 14:30:36.500 6.0 2018-07-16 21:56:48.0...
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524,414,045
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29,688
ENH: Group some columns in subplots with DataFrame.plot
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2019-11-18T14:47:25Z
2021-07-23T04:41:15Z
null
NONE
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`df.plot(subplots=True)` will create one subplot per column. Is there a way to group multiple columns on the same subplot (and leave the rest of the column separated)? I'd be happy to submit a PR if that's something you'd consider? In terms of API `subplot` could accept a list of tuples where each tuple indicates ...
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29,689
Put some marker in the DOCs for functions need in previous installed modules or drivers
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2019-11-18T16:01:13Z
2021-07-23T04:42:06Z
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#### Code Sample, a copy-pastable example if possible ```python # Your code here import pandas as pd df = pd.read_parquet( 'https://github.com/WillKoehrsen/Data-Analysis/blob/master/plotly/data/medium_data_2019_01_06?raw=true' ) ``` #### Problem description Sorry I am newbie in pandas, and before today ne...
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29,690
BUG: Series groupby does not include nan counts for all categorical labels (#17605)
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2019-11-18T16:02:26Z
2019-11-20T12:46:24Z
2019-11-20T12:46:19Z
CONTRIBUTOR
null
- [x] closes #17605 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This is a simple, low-impact fix for #17605.
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29,691
Groupby excludes groups with nan entry in group-defining columns
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2021-05-27T19:07:24Z
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#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np df = pd.DataFrame({'ind':[np.nan,1],'col':[0,1]}).groupby('ind').sum() df ``` results in ``` col ind 1.0 1 ``` #### Problem description Groupby ignores groups that contain a np.nan in...
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REF: ensure name and cname are always str
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2019-11-18T16:12:06Z
2019-11-20T17:47:34Z
2019-11-20T17:15:59Z
MEMBER
null
Once this is assured, there are a lot of other things (including in core.computation!) that we can infer in follow-ups.
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Removed compat_helper.h
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2019-11-18T17:41:11Z
2020-01-16T00:35:17Z
2019-11-19T13:26:59Z
MEMBER
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ref #29666 and comments from @jbrockmendel and @gfyoung looks like the compat header can now be removed, now that we are on 3.6.1 as a minimum
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TST: Split pandas/tests/frame/test_indexing into a directory (#29544)
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2019-11-18T17:45:11Z
2019-11-19T15:07:06Z
2019-11-19T15:07:02Z
CONTRIBUTOR
null
- [x] closes #29544 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Split test cases in pandas/tests/frame/test_indexing into a sub directory (like pandas/tests/indexing). Still main file is pretty huge. Will update...
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29,695
restore clipboard setup?
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2019-11-18T18:58:30Z
2019-11-19T16:57:51Z
2019-11-19T16:57:49Z
CONTRIBUTOR
null
@datapythonista do you recall why these lines were removed in https://github.com/pandas-dev/pandas/pull/28531/files?
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CI: Use conda for 3.8 build
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2019-11-18T19:01:52Z
2019-11-19T14:48:51Z
2019-11-19T13:19:16Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/29001
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29,697
BUG: merge raises for how='outer'/'right' when duplicate suffixes are specified
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2019-11-18T21:55:51Z
2020-04-26T20:24:17Z
2020-04-26T20:24:17Z
MEMBER
null
#### Code Sample, a copy-pastable example if possible On `master` the following raises for `how='outer'` and `how='right'` with duplicate `suffixes`: ```python In [1]: import pandas as pd; pd.__version__ Out[1]: '0.26.0.dev0+958.g545d17529' In [2]: df1 = pd.DataFrame({'A': list('ab'), 'B': [0, 1]}) In [3]: df...
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524,672,251
MDExOlB1bGxSZXF1ZXN0MzQyNDA1Mzc3
29,698
REF: dont _try_cast for user-defined functions
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2019-11-18T23:05:21Z
2019-11-21T16:02:06Z
2019-11-21T13:07:58Z
MEMBER
null
Also add a whatsnew note for #29641 and a comment in core.apply that ive been meaning to get in
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MDU6SXNzdWU1MjQ2ODE1NDg=
29,699
MultiIndex-Columns Integer and String: Column level 1 not accessable after a using append multiple times
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2019-11-18T23:30:48Z
2021-05-31T14:27:04Z
2021-05-31T14:27:04Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd pd.show_versions() # Create Multi-Index df = pd.DataFrame({'col1':[1,2,3], 'col2':[11,12,13]}) df = pd.concat([df], keys=['multi'], names=['level1'], axis=1) for i in range(100): df[i, 'colA'] = 10 a = pd.DataFr...
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524,689,108
MDExOlB1bGxSZXF1ZXN0MzQyNDE5MjUy
29,700
BUG: Index.get_loc raising incorrect error, closes #29189
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2019-11-18T23:54:09Z
2019-11-25T23:49:23Z
2019-11-25T23:45:28Z
MEMBER
null
- [x] closes #29189 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry cc @WillAyd
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29,701
format replaced with f-strings
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6
2019-11-18T23:57:08Z
2019-11-21T13:04:17Z
2019-11-21T13:04:13Z
CONTRIBUTOR
null
- [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` ref #29547
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29,702
REF: use _extract_result in Reducer.get_result
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1
2019-11-19T01:33:24Z
2019-11-19T15:19:50Z
2019-11-19T13:20:14Z
MEMBER
null
Working towards ironing out the small differences between several places that do roughly the same extraction. Getting the pure-python versions will be appreciably harder, kept separate. This avoids an unnecessary `np.isscalar` call.
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29,703
TYP: more annotations for io.pytables
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1
2019-11-19T02:12:24Z
2019-11-20T15:16:57Z
2019-11-20T13:12:12Z
MEMBER
null
should be orthogonal to #29692.
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29,704
Assorted io extension cleanups
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2019-11-19T06:16:01Z
2020-01-16T00:35:18Z
2019-11-20T12:58:14Z
MEMBER
null
Just giving these a look seem to be a lot of unused definitions / functions
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MDU6SXNzdWU1MjQ4MzAwOTI=
29,705
Misaligned X axis when plotting datetime indexed series with regular and irregular time index
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4
2019-11-19T07:39:01Z
2021-07-23T04:42:43Z
null
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Create sample data import pandas as pd import numpy as np import matplotlib.pyplot as plt p1d = {'2016-08-10 10:00:00': 2.290438, '2016-10-12 08:20:00': 1.314112, '2016-11-15 12:45:00': 0.213702, '2017-04-27 18:30:00': 0.2567...
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524,864,263
MDU6SXNzdWU1MjQ4NjQyNjM=
29,706
series.to_json + isoformat: bad serialization of naive dates (as utc stamps)
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2019-11-19T08:57:09Z
2021-07-23T04:44:16Z
null
NONE
null
#### Exhibited there ```python from datetime import datetime import pandas as pd def test_json(): series = pd.Series( [1., 2., 3.], index=pd.date_range(datetime(2020, 1, 1), freq='H', periods=3) ) jsonseries = series.to_json(date_format='iso') assert jsonseries == ( ...
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524,880,507
MDU6SXNzdWU1MjQ4ODA1MDc=
29,707
.loc assignment with empty label list should not convert dtypes
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2019-11-19T09:27:04Z
2021-07-23T04:44:02Z
null
NONE
null
#### Code Sample ```python import pandas as pd df = pd.DataFrame({'a':[2,3]}) print(df.a.dtype) # int64 df.loc[[]] = 0.1 print(df.a.dtype) # float64! ``` #### Problem description The `.loc`-Assignment with empty label list does not change any dataframe row, so it should not convert the column datatype from...
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29,708
Indexing (__getitem__) of DataFrame/Series with ExtensionArray densifies the array
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0
2019-11-19T12:37:31Z
2019-12-04T14:15:14Z
2019-12-04T14:15:14Z
MEMBER
null
I noticed in GeoPandas that filtering a series with a mask "densifies" the ExtensionArray (= converting the ExtesionArray to a materialized numpy array), which can potentially be very expensive (if the ExtensionArray doesn't store a numpy array of scalars under the hood). This is quite problematic for such a basic ...
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29,709
DataFrame.at indexing with date string promotes column type, while indexing with datetime casts value
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2019-11-19T12:54:29Z
2021-08-12T21:57:36Z
null
NONE
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#### Code Sample, a copy-pastable example if possible ```python index = pd.date_range("2019-01-01", "2019-01-02", freq="D") df = pd.DataFrame(index=index, columns=["A"]).fillna(1) >>> df.at[pd.to_datetime('2019-01-01'), 'A'] = 0.98 >>> df A 2019-01-01 0 # cast to column dtype 2019-01-02 1 >>...
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525,056,399
MDU6SXNzdWU1MjUwNTYzOTk=
29,710
DEPR: Deprecate `.str` accessor on object-dtype.
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7
2019-11-19T14:48:19Z
2021-07-23T04:51:29Z
null
CONTRIBUTOR
null
This issue discusses a future deprecation of the `.str` accessor on StringArray. It's probably blocked by making `Series(['a', 'b', 'c'])` infer StringDtype, rather than object dtype. In https://github.com/pandas-dev/pandas/pull/29640, we split the implementation of `.str` methods into two: one for the old `objec...
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525,095,475
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29,711
Dropna Subnet changes timestamp format in to_csv()
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4
2019-11-19T15:49:00Z
2019-12-10T05:26:31Z
null
NONE
null
#### Code Sample, a copy-pastable example if possible ``` import pandas as pd import datetime date_example_string = "1911180945" ts = datetime.datetime.strptime( date_example_string, "%y%m%d%H%M%S" ) test_json = [ { "created_at": "2019-11-18 16:28:42.932887", "foo": "bar", } ...
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525,126,946
MDExOlB1bGxSZXF1ZXN0MzQyNzc2NzUz
29,712
CI: Fix clipboard problems
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20
2019-11-19T16:39:20Z
2020-07-01T16:06:59Z
2020-01-15T13:40:35Z
MEMBER
null
- [X] closes #29676 Fixes the clipboard problems in the CI. With this PR we're sure they are being run, and they work as expected.
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29,713
TST: Silence lzma output
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2
2019-11-19T16:55:18Z
2019-11-20T12:36:09Z
2019-11-20T12:36:07Z
CONTRIBUTOR
null
This was leaking to stdout when the pytest `-s` flag was used.
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