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* remove ``kwargs`` for cleaner signature.
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---
Panda build stops with:
```
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---
#### Problem description
I'm trying to round a column to 4 decimal places to st... | {
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#### Is your feature request related to a problem?
I'm one of the devel... | {
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#### Code Sample, a copy-pastable example
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- [x] I have confirmed this bug exists on the latest version of pandas.
- [x] (optional) I have confirmed this bug exists on the master branch of pandas.
---
#### Code Sample, a copy-pastable example
_Sorry for including an external data... | {
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- [X] 0 tests added / 0 passed
- [X] passes `black pandas`
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry. __this is a CI PR. I don't think we touch whatsnew for those.__
### Scope
<s>Remove the `--recursive` keyword from `code_checks.sh`, so that the... | {
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- [ .] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/... | {
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```
WARNING: autodoc: failed to import method 'sparse.from_spmatrix' from module 'DataFrame'; the following exception was raised:
No module named 'DataFrame'
WARNING: autodoc: failed to import method 'sparse.to_coo' from module 'DataFrame'; the following exception was ... | {
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- [x] tests added / passed
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- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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- Not needed - this was a regression
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- [x] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).
---
#### Question about pandas
**Note**: If you'd still like to submit a question, p... | {
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- [X] I have confirmed this bug exists on the latest version of pandas.
- [X] (optional) I have confirmed this bug exists on the master branch of pandas.
---
#### Code Sample, a copy-pastable example
```python
import pandas as pd
df ... | {
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```AttributeError: 'DataFrame' object has no attribute 'compare'```
```
Python 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)] on win32
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```
D:\a\1\s\test_venv\lib\site-packages\pandas\tests\plotting\test_series.py:655: PytestUnknownMarkWarning: Unknown pytest.mark.slow - is this a typo? You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/latest/mark.html
@pytest.mark.s... | {
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_________ TestPandasContainer.test_to_json_large_numbers[2147483648] __________
[gw0] win32 -- Python 3.7.7 D:\a\1\s\test_venv\Scripts\python.exe
self = <pandas.tests.io.json.test_pandas.TestPandasContainer object at 0x2C6E2A70>
bigNum = 2147483648
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```python
def test_consistency_with_window():
# consistent return values with window
df = test_frame
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- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
cc @WillAyd
Removes casting on transformations which go through `_transform_fast`. The result is a reduction that is broadcast to the original i... | {
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- [ X ] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
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---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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Video Call: https://zoom.us/j/942410248
Minutes: https://docs.google.com/document/u/1/d/1tGbTiYORHiSPgVMXawiweGJlBw5dOkVJLY-licoBmBU/edit?ouid=10... | {
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---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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---
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removed in the PR: https://github.com/pandas-dev/pandas/pull/35151, we should add them back.
cc @VirosaLi | {
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#### Code
```python
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https://api.github.com/repos/pandas-dev/pandas/issues/35162 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35162/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35162/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35162/events | https://github.com/pandas-dev/pandas/issues/35162 | 652,496,337 | MDU6SXNzdWU2NTI0OTYzMzc= | 35,162 | ENH: should pandas.core.arrays.Categorical have a dropna=False option? | {
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```
In [1]: from pandas.core.arrays import Categorical
In [2]: Categorical([1, 2, 3,4,4,4, None, None]) ... | {
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- [x] 0 tests added / 0 passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
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- [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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Closes https://github.com/pandas-dev/pandas/issues/35047
```python
import pandas as pd
import numpy as np
df = pd.DataFrame(np.random.randn(1000, 3), columns=list("ABC"))
%timeit df.apply(lambda x: x["A"] + x["B"], axis=1)
```
```
# 1.0.4
22.5 ms ± 4.73 ... | {
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With these all in the same place, we can separate out helper functions and de-duplicate a whole bunch of verbose code. | {
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adding kernels (e.g. `str.isupper()`) to operate on that data. This issue
is to discuss how we can expose the native string dtype to pandas' users.
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- [ ] tests added / passed
- [x] passes `black pandas`
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- [ ] whatsnew entry
Re-use `ensure_datetime64ns` for the subset of cases where that is applicable. I'm at a loss for why we get such a slowdown for the other cases.
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] | closed | false | null | [] | null | 1 | 2020-07-08T03:04:53Z | 2020-08-21T17:05:21Z | 2020-07-08T03:40:58Z | NONE | null | my package list is:
Package Version Note: you may need to restart the kernel to use updated packages.
--------------------------------- -------------------
-cikit-learn 0.22.2.post1
asn1crypto 0.24.0
attrs ... | {
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... | closed | false | null | [] | null | 2 | 2020-07-08T05:25:04Z | 2020-07-09T11:06:29Z | 2020-07-09T11:06:15Z | NONE | null | - [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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pd.Series(['1', '2', '3'], dtype="string").astype("int")
```
Turns the String Series into an Integer Series and converts the values.
However, the inverse operation raises an Error:
```python
pd.Series([1, 2, 3], dtype="int").astype("string")
```
In order to be consistent, the inverse operation... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35175 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35175/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35175/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35175/events | https://github.com/pandas-dev/pandas/pull/35175 | 653,136,998 | MDExOlB1bGxSZXF1ZXN0NDQ2MTExOTMz | 35,175 | DOC: fix code snippets for generic indexing | {
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I think generic indexing here intended to be referred to something like `df[0:3]` and `df['bar':'kar']` | {
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I think the primary points to discuss are around
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- [ ] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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... | 1 | 2020-07-08T14:46:26Z | 2020-07-08T15:10:00Z | null | MEMBER | null | Follow-up on https://github.com/pandas-dev/pandas/pull/27801: that PR added `ExtensionArray.argmin()/argmax()` methods, but this is not yet used in the equivalent Series methods (through `_reduce`).
When adding this, we will need to decide on the following issues as well:
* API/BUG: Series.argmin/max with all-Na... | {
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drop_duplicates https://github.com/pandas-dev/pandas/pull/35121. **merged**
dropna https://github.com/pandas-dev/pandas/pull/35180
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- [x] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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```
import pandas as pd
import numpy as np
levels = [np.arange(10), np.arange(100), np.arange(100)]
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https://api.github.com/repos/pandas-dev/pandas/issues/35188 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35188/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35188/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35188/events | https://github.com/pandas-dev/pandas/issues/35188 | 653,842,865 | MDU6SXNzdWU2NTM4NDI4NjU= | 35,188 | Possible performance regression in Series.xs() and DataFrame.xs() with MultiIndex. | {
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"color": "a1... | open | false | null | [] | null | 1 | 2020-07-09T07:47:58Z | 2021-06-29T01:31:34Z | null | NONE | null | Performance of `Series.xs()` when getting values at specified index and the **first level** of a large dataset seems to have regressed significantly, after pandas was upgraded to v1.0.5 from v0.25.3. So is `DataFrame.xs()`.
code:
```python
import numpy as np
import pandas as pd
n=1e4
data = pd.Series(np.arange... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35189 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35189/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35189/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35189/events | https://github.com/pandas-dev/pandas/issues/35189 | 653,845,853 | MDU6SXNzdWU2NTM4NDU4NTM= | 35,189 | BUG: sorting a MultiIndex with pd.Period does not sort correctly when assigning new values inplace | {
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] | closed | false | null | [] | null | 1 | 2020-07-09T07:52:26Z | 2020-08-21T17:05:22Z | 2020-07-09T09:20:30Z | NONE | null | This is a problem on pandas 1.0.5:
```python
import pandas as pd
s = pd.Series(
{
("A", pd.Period("2021")): 20,
("A", pd.Period("2020")): 10,
}
)
s.sort_index(level=1, sort_remaining=False)
# gives:
# A 2020 10
# 2021 20
# dtype: int64
# --> works!
s[("B", pd.Per... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35190 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35190/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35190/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35190/events | https://github.com/pandas-dev/pandas/pull/35190 | 653,935,559 | MDExOlB1bGxSZXF1ZXN0NDQ2NzU3MDUy | 35,190 | Be specific about more indexes or values | {
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This specific two errors lets me know which way around, although I believe having more indexes than data shows a place in the api for a default value (possibly per-index) which would allow this to later be reduced to th... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35191 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35191/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35191/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35191/events | https://github.com/pandas-dev/pandas/issues/35191 | 654,071,402 | MDU6SXNzdWU2NTQwNzE0MDI= | 35,191 | ENH: Print and manipulate rows | {
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... | null | 2 | 2020-07-09T13:42:34Z | 2020-08-21T17:05:23Z | 2020-07-10T05:24:20Z | NONE | null | #### Is your feature request related to a problem?
[this should provide a description of what the problem is, e.g. "I wish I could use pandas to do [...]"]
#### Describe the solution you'd like
[this should provide a description of the feature request, e.g. "`DataFrame.foo` should get a new parameter `bar` tha... | {
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... | null | 3 | 2020-07-09T14:05:02Z | 2020-07-09T22:03:18Z | 2020-07-09T22:03:11Z | NONE | null | code to extract row from database and replace values within row
- [ ] closes #xxxx
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/35193 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35193/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35193/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35193/events | https://github.com/pandas-dev/pandas/issues/35193 | 654,230,405 | MDU6SXNzdWU2NTQyMzA0MDU= | 35,193 | Python3.6 FreeBSD pip3 install pandas fails with error 1 | {
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] | closed | false | null | [] | null | 3 | 2020-07-09T17:31:14Z | 2020-08-21T17:05:23Z | 2020-07-11T15:54:36Z | NONE | null | - [x] I have searched the [[pandas] tag](https://stackoverflow.com/questions/tagged/pandas) on StackOverflow for similar questions.
- [ ] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).
---
#### Question about pandas
**Note**: If you'd still like to submit a question, p... | {
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```python
df1 = pd.DataFrame(data=[[0]], columns=['second'])
df2 = pd.DataFrame(data=[[0, 0, 0]], columns=['first', 'second', 'second'])
```
<img width="191" alt="Screen Shot 2020-07-09 at 3 15 10 PM" src="https://user-images.githubusercontent.com/7226751/87081253-01d4... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35195 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35195/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35195/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35195/events | https://github.com/pandas-dev/pandas/pull/35195 | 654,318,468 | MDExOlB1bGxSZXF1ZXN0NDQ3MDY5Mjc1 | 35,195 | PERF: MonthOffset.apply_index | {
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- [ ] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
```
import pandas as pd
import numpy as np
N = 10000
rng = pd.date_range(start="1/1/2000", periods=N, freq="T")
offset = pd.offsets.MonthBegi... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35196 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35196/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35196/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35196/events | https://github.com/pandas-dev/pandas/pull/35196 | 654,325,311 | MDExOlB1bGxSZXF1ZXN0NDQ3MDc0OTcx | 35,196 | PERF: lookups on Timestamp attributes | {
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cc @scoder is there a way to make this unnecessary? I'm imagining a cdef property that aliased these attributes appropriately. | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35197 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35197/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35197/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35197/events | https://github.com/pandas-dev/pandas/issues/35197 | 654,352,876 | MDU6SXNzdWU2NTQzNTI4NzY= | 35,197 | API: make DTA/DTI == string behavior match DTI.get_loc partial-string-matching? | {
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... | closed | false | null | [] | null | 1 | 2020-07-09T21:16:13Z | 2021-06-19T03:40:46Z | 2021-06-19T03:40:46Z | MEMBER | null | In most cases, there is a relationship between `index.get_loc` and `index.__eq__`. `index.get_loc(key)` roughly matches `(index == key).nonzero()`
`DatetimeIndex.get_loc` has special treatment for strings that we could extend to DatetimeIndex (and DatetimeArray) `__eq__`.
```
>>> dti = pd.date_range("2016-01-01... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35200 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35200/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35200/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35200/events | https://github.com/pandas-dev/pandas/issues/35200 | 654,402,672 | MDU6SXNzdWU2NTQ0MDI2NzI= | 35,200 | Strange dtype behavior for numeric strings when using to_csv and read_csv | {
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The following code writes out a column containing strings of the numerals 0 to N-1 plus a string 'None', and then reads it back in.
```python
for N in [10,100,1000,10000,100000,1000000]:
A = pd.DataFrame(list(range(N)) + list(range(N)), columns=['a'])
A['a'] = A['a'].map(str)
A.loc[N-... | {
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- [x] closes #35028
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
*Behavioural Changes*
Fixing two related bugs: when grouping on multiple categoricals, `.sum()` and `.count()` would return ... | {
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... | 2 | 2020-07-09T23:29:10Z | 2020-07-11T00:01:58Z | null | CONTRIBUTOR | null | - [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the latest version of pandas.
(only in current master; dropna=False didn't exist previously)
- [x] (optional) I have confirmed this bug exists on the master branch of pandas.
---
#### Code Sample... | {
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- [x] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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- [No] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).
---
#### Question about pandas
To assign values from one column of a dataframe to... | {
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... | 6 | 2020-07-10T06:25:50Z | 2021-08-08T16:53:56Z | null | NONE | null | #### Location of the documentation
[pandas.read_csv](https://dev.pandas.io/docs/reference/api/pandas.read_csv.html)
#### Documentation problem
I've just noticed that `s3fs` is required when you read an URL from s3. While it is documented that you can read from S3, the implication that you need to install an ex... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35207 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35207/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35207/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35207/events | https://github.com/pandas-dev/pandas/pull/35207 | 654,579,456 | MDExOlB1bGxSZXF1ZXN0NDQ3MjgwNzgy | 35,207 | ENH: raise limit for completion number of columns and warn beyond | {
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"default"... | closed | false | null | [] | null | 2 | 2020-07-10T07:41:05Z | 2020-11-22T04:57:46Z | 2020-11-22T04:57:46Z | CONTRIBUTOR | null | Hi,
Currently the user-completion (ipython "\<tab\>") on a dataframe with more than 100 columns will silently ignore some columns, letting an unaware user confused on whether data disapeared.
This is actually documented, and due to an arbitrary limit set to workaround a performance issue ( See #18587 )
Datafra... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35208 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35208/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35208/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35208/events | https://github.com/pandas-dev/pandas/pull/35208 | 654,651,790 | MDExOlB1bGxSZXF1ZXN0NDQ3MzM1MDk1 | 35,208 | ROADMAP: add consistent missing values for all dtypes to the roadmap | {
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(and there are probably still other details / practical aspects that can be further discussed in dedicated... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/35209 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/35209/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/35209/comments | https://api.github.com/repos/pandas-dev/pandas/issues/35209/events | https://github.com/pandas-dev/pandas/issues/35209 | 654,653,688 | MDU6SXNzdWU2NTQ2NTM2ODg= | 35,209 | ArrowIOError: Invalid parquet file. Corrupt footer. When modifying files in S3 (Bump s3fs to 0.4.2) | {
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The code to replicate this error is:
```
import pandas as pd
pd.show_versions()
n = 5
df = pd.DataFrame()
for i in range(n):
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related: https://github.com/pandas-dev/pandas/pull/35181#event-3531612625
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- [x] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
#### Code Sample, a copy-pastable example
This requires setting up an excel fil... | {
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- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
Notes:
- [x] I added a unit test for the example given in #20359
- [x] As far as the context of this code is concerned, I replacde '.' with decima... | {
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**Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28... | {
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