style: fix import format at pandas/core/computation
- [ ] xref #23334 
- [x] passes `git diff master -u -- "*.py" | flake8 --diff`

Hello @streeck! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/core/computation/align.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/align.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/common.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/common.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/engines.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/engines.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/eval.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/eval.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/expr.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/expr.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/expressions.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/expressions.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/ops.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/ops.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/pytables.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/pytables.py) !

 - There are no PEP8 issues in the file [`pandas/core/computation/scope.py`](https://github.com/streeck/pandas/blob/3689248877e24fab02633328a813e7bd2d591519/pandas/core/computation/scope.py) !

 Yeah, removing the `import pandas` broke line 50, should I add the import back or change line 50 to use `pd` since there's already an `import pandas as pd`? @alimcmaster1 
**Edit:** forgot to mention that changing line 50 to: `'Timestamp': pd._libs.tslib.Timestamp` works (locally tested) can you merge master, we just updated the isort cfg can you merge master and update Will do later today +  the fix # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23388?src=pr&el=h1) Report
> Merging [#23388](https://codecov.io/gh/pandas-dev/pandas/pull/23388?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/de39bfc5e5c6483cb2669773fa10ddc2e32ca111?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/23388/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23388?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #23388      +/-   ##
==========================================
- Coverage   92.21%   92.21%   -0.01%     
==========================================
  Files         161      161              
  Lines       51173    51169       -4     
==========================================
- Hits        47190    47186       -4     
  Misses       3983     3983
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.65% <100%> (-0.01%)` | :arrow_down: |
| #single | `42.23% <100%> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23388?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/computation/expressions.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vZXhwcmVzc2lvbnMucHk=) | `93.27% <ø> (ø)` | :arrow_up: |
| [pandas/core/computation/eval.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vZXZhbC5weQ==) | `97.11% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/expr.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vZXhwci5weQ==) | `88.57% <100%> (-0.09%)` | :arrow_down: |
| [pandas/core/computation/engines.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vZW5naW5lcy5weQ==) | `88.88% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/ops.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vb3BzLnB5) | `95.6% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/scope.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vc2NvcGUucHk=) | `93.06% <100%> (-0.07%)` | :arrow_down: |
| [pandas/core/computation/pytables.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vcHl0YWJsZXMucHk=) | `92.37% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vY29tbW9uLnB5) | `85.71% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/align.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vYWxpZ24ucHk=) | `97.89% <100%> (ø)` | :arrow_up: |
| [pandas/core/computation/check.py](https://codecov.io/gh/pandas-dev/pandas/pull/23388/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tcHV0YXRpb24vY2hlY2sucHk=) | `90.9% <100%> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23388?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/23388?src=pr&el=footer). Last update [de39bfc...d341a12](https://codecov.io/gh/pandas-dev/pandas/pull/23388?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 thanks !