BrandonFors/pandas-github-issues huggingface dataset:
MAINT: Remove self.assertNotEqual from testing
State: closed

Title is self-explanatory.

Partially addresses #15990.


Labels:
name: Testing
description: pandas testing functions or related to the test suite

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=h1) Report
> Merging [#16176](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/de8734474daddf772d97c66a9ef759e23a3d362f?src=pr&el=desc) will **decrease** coverage by `0.02%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16176/graphs/tree.svg?token=eZ4WkYLtcO&src=pr&width=650&height=150)](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16176      +/-   ##
==========================================
- Coverage   90.88%   90.86%   -0.03%     
==========================================
  Files         162      162              
  Lines       50821    50821              
==========================================
- Hits        46189    46176      -13     
- Misses       4632     4645      +13
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.64% <ø> (-0.03%)` | :arrow_down: |
| #single | `40.33% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/plotting/\_converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb252ZXJ0ZXIucHk=) | `63.54% <0%> (-1.82%)` | :arrow_down: |
| [pandas/core/indexes/datetimes.py](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9kYXRldGltZXMucHk=) | `95.33% <0%> (-0.1%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=footer). Last update [de87344...549c3d7](https://codecov.io/gh/pandas-dev/pandas/pull/16176?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

thanks!
Add column index to be removed in get_dummies
State: closed

While create dummies with get_dummies, we sometime want to remove an other column than the first one.
Add this possibility by :
- changing drop_first to drop_idx,
- drop_idx accept both bool (as drop_first) and int

 - [ ] closes #xxxx
 - [ ] tests added / passed
 - [ ] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff``
 - [ ] whatsnew entry


Labels:

Comments:
this seems overly complicated. you can simply select what you need (or don't after).
We also can't remove the `drop_first` keyword, since that isn't backwards compatible.

My preferred solution for this is to re-order the categories with `.set_categories` before calling get_dummies, so that the one you want dropped is first.
Indeed you are right both of you. I was hoping doing something simple but it was not. Especially when we apply get_dummies to a data frame with more than one categorical columns.

Thanks for your comments
If you're interested, you could submit a PR with some documentation on how to achieve this. I'm sure you're not the only one who's wanted to drop a column other than the first.
CLN: remove unused TimeGrouper._get_binner_for_resample() method
State: closed

 - [x] tests passed
 - [x] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff``
 - [ ] whatsnew entry

method seems unused and is not covered by tests -> remove it?


Labels:
name: Clean

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=h1) Report
> Merging [#16152](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/3b80ed33e00957fec4a79cde19df66d809b5d3a7?src=pr&el=desc) will **increase** coverage by `0.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16152/graphs/tree.svg?src=pr&width=650&token=eZ4WkYLtcO&height=150)](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16152      +/-   ##
==========================================
+ Coverage   90.83%   90.85%   +0.01%     
==========================================
  Files         159      159              
  Lines       50796    50785      -11     
==========================================
  Hits        46143    46143              
+ Misses       4653     4642      -11
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.64% <ø> (+0.01%)` | :arrow_up: |
| #single | `40.32% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/resample.py](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvcmVzYW1wbGUucHk=) | `96.06% <ø> (+1.6%)` | :arrow_up: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `91.03% <0%> (+0.34%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=footer). Last update [3b80ed3...465e555](https://codecov.io/gh/pandas-dev/pandas/pull/16152?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

thanks, don't remember fully what I added this.
this was replaced by ``_get_binner`` which dispatched to the correct subclass.
MAINT: Remove self.assertFalse from testing
State: closed

Title is self-explanatory.

Partially addresses #15990.

Labels:
name: Testing
description: pandas testing functions or related to the test suite
name: Clean

Comments:
One remark for this replacement: in certain cases it might be that we want to test that something is *actually* ``False``, and not falsey (for which you would need to do `` assert xx is False`` instead of ``assert not xx``) 
But, this is difficult to say without looking in more detail into each of the tests, which is a bit too much work ..
@jorisvandenbossche : Well according to `unittest` documentation, `assertFalse(expr)` checks that `bool(expr) is False`, so I think that concern might be moot.
Ah, you're correct. The implementation actually just does ``if expr: raise ..``, which is equivalent.
@gfyoung you're a hero for running through all these!
@MaximilianR : Thanks!  Couldn't do it without bash ;)
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=h1) Report
> Merging [#16151](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/3b80ed33e00957fec4a79cde19df66d809b5d3a7?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16151/graphs/tree.svg?src=pr&token=eZ4WkYLtcO&height=150&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #16151   +/-   ##
=======================================
  Coverage   90.83%   90.83%           
=======================================
  Files         159      159           
  Lines       50796    50796           
=======================================
  Hits        46143    46143           
  Misses       4653     4653
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.62% <ø> (ø)` | :arrow_up: |
| #single | `40.31% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=footer). Last update [3b80ed3...ecc0590](https://codecov.io/gh/pandas-dev/pandas/pull/16151?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

thanks!
MAINT: Remove vestigial assertRaisesRegexp
State: closed

Removes remaining `assertRaisesRegexp` before #16119 got merged.

This must be merged in ASAP because `master` will fail otherwise.

@jreback 
@jorisvandenbossche 

Labels:
name: Testing
description: pandas testing functions or related to the test suite

Comments:
thanks!
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16148?src=pr&el=h1) Report
> :exclamation: No coverage uploaded for pull request base (`master@1a93759`). [Click here to learn what that means](https://docs.codecov.io/docs/error-reference#section-missing-base-commit).
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16148/graphs/tree.svg?src=pr&token=eZ4WkYLtcO&width=650&height=150)](https://codecov.io/gh/pandas-dev/pandas/pull/16148?src=pr&el=tree)

```diff
@@            Coverage Diff            @@
##             master   #16148   +/-   ##
=========================================
  Coverage          ?   90.86%           
=========================================
  Files             ?      159           
  Lines             ?    50796           
  Branches          ?        0           
=========================================
  Hits              ?    46156           
  Misses            ?     4640           
  Partials          ?        0
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.64% <ø> (?)` | |
| #single | `40.31% <ø> (?)` | |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16148?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16148?src=pr&el=footer). Last update [1a93759...77ffd05](https://codecov.io/gh/pandas-dev/pandas/pull/16148?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
BUG:Pivot table drops column/index names=nan when dropna=false
State: closed

 - [x] closes #14072
 - [x] tests added / passed
 - [x] passes ``git diff upstream/master --name-only -- '*.py' | flake8 --diff``
 - [ ] whatsnew entry
clean-up of #14246

Labels:
name: Reshaping
description: Concat, Merge/Join, Stack/Unstack, Explode

Comments:
this is doing similar things to changes in #12607 
> this is doing similar things to changes in #12607

Ah I see. That is a much larger change that the original issue I was looking at :)
I think the change in `Cython` is definitely required. The problem is how to pass `dropna` to it without disturbing too many existing structures. 
I just reset my developing environment and am trying to use Anaconda Python2.7. Interestingly, numerous tests failed on me even with the master branch. So I just tested `pivot` and `groupby` at local. I'll do more research on the weekend.
Some tests will be failing and many are actually different/separate problems. I already located several and will update soon. 
can you rebase and update?
needs a rebase. if you'd like to continue, pls comment.
PERF: use StringHashtable in data algos
State: closed

xref #16107

Labels:
name: Performance
description: Memory or execution speed performance
name: Clean

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=h1) Report
> Merging [#16128](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/6ad32d23c52416b4e6195c873a23be5065b85228?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16128/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16128      +/-   ##
==========================================
- Coverage   90.84%   90.83%   -0.01%     
==========================================
  Files         159      159              
  Lines       50774    50771       -3     
==========================================
- Hits        46124    46120       -4     
- Misses       4650     4651       +1
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.61% <100%> (-0.01%)` | :arrow_down: |
| #single | `40.33% <100%> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/algorithms.py](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvYWxnb3JpdGhtcy5weQ==) | `94.41% <100%> (-0.03%)` | :arrow_down: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `90.68% <0%> (-0.35%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=footer). Last update [6ad32d2...4832f42](https://codecov.io/gh/pandas-dev/pandas/pull/16128?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
REGR: bug in moments when using bottleneck
State: closed

closes #16116


Labels:
name: Regression
description: Functionality that used to work in a prior pandas version
name: Numeric Operations
description: Arithmetic, Comparison, and Logical operations

Comments:
Do `nanskew`, `nankurt`, and `nansem` need the same fix too?
done (``nansem`` already hits the ``nanvar`` path).

I had changed this code a long time ago (but in 0.20.0) IIRC to simplify. Guess was not fully exercised.
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=h1) Report
> Merging [#16124](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/4ca4fca839ced3483f37b3ae2434033e2721e1d5?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16124/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16124      +/-   ##
==========================================
+ Coverage   90.83%   90.84%   +<.01%     
==========================================
  Files         159      159              
  Lines       50771    50774       +3     
==========================================
+ Hits        46120    46124       +4     
+ Misses       4651     4650       -1
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.62% <100%> (ø)` | :arrow_up: |
| #single | `40.33% <0%> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/nanops.py](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvbmFub3BzLnB5) | `98.18% <100%> (+0.01%)` | :arrow_up: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `91.03% <0%> (+0.34%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=footer). Last update [4ca4fca...15afc09](https://codecov.io/gh/pandas-dev/pandas/pull/16124?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

Thanks!
REGR: Bug in indexing with a CategoricalIndex
State: closed

closes #16115
closes #16131


Labels:
name: Indexing
description: Related to indexing on series/frames, not to indexes themselves
name: Regression
description: Functionality that used to work in a prior pandas version
name: Categorical
description: Categorical Data Type

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=h1) Report
> Merging [#16123](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/b8d98618d3dd9a2f912e8ed67b835836406dcb7c?src=pr&el=desc) will **increase** coverage by `0.02%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16123/graphs/tree.svg?height=150&src=pr&token=eZ4WkYLtcO&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16123      +/-   ##
==========================================
+ Coverage   90.84%   90.86%   +0.02%     
==========================================
  Files         159      159              
  Lines       50779    50796      +17     
==========================================
+ Hits        46129    46156      +27     
+ Misses       4650     4640      -10
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.64% <100%> (+0.02%)` | :arrow_up: |
| #single | `40.31% <18.18%> (-0.02%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/indexes/category.py](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9jYXRlZ29yeS5weQ==) | `98.48% <100%> (+0.04%)` | :arrow_up: |
| [pandas/core/dtypes/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZHR5cGVzL2NvbW1vbi5weQ==) | `93.24% <0%> (-0.39%)` | :arrow_down: |
| [pandas/core/series.py](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvc2VyaWVzLnB5) | `94.98% <0%> (ø)` | :arrow_up: |
| [pandas/core/generic.py](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ2VuZXJpYy5weQ==) | `91.31% <0%> (ø)` | :arrow_up: |
| [pandas/plotting/\_converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb252ZXJ0ZXIucHk=) | `65.35% <0%> (+1.81%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=footer). Last update [b8d9861...032232c](https://codecov.io/gh/pandas-dev/pandas/pull/16123?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

@jorisvandenbossche don't merge yet. not 100% happy with this soln.
BUG: Compare names with None in DataFrame ctor
State: closed

Closes https://github.com/pandas-dev/pandas/issues/16114

Labels:
name: Bug
name: Dtype Conversions
description: Unexpected or buggy dtype conversions
name: Regression
description: Functionality that used to work in a prior pandas version

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=h1) Report
> Merging [#16117](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/844013b20c2a6230b1baeec1d5442e26b7930656?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16117/graphs/tree.svg?src=pr&token=eZ4WkYLtcO&height=150&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16117      +/-   ##
==========================================
- Coverage   90.84%   90.83%   -0.01%     
==========================================
  Files         159      159              
  Lines       50771    50771              
==========================================
- Hits        46122    46120       -2     
- Misses       4649     4651       +2
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.61% <100%> (-0.01%)` | :arrow_down: |
| #single | `40.34% <100%> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.59% <100%> (-0.05%)` | :arrow_down: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `90.68% <0%> (-0.35%)` | :arrow_down: |

------

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> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
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aside from the whatsnew lgtm.
thanks!