pre-commit: Python imports (#2686)

* pre-commit: Python imports

Add two new Python rules to:
- remove unused imports
- sort imports according to PEP8

* pre-commit: Python imports

Add two new Python rules to:
- remove unused imports
- sort imports according to PEP8

`.editorconfig`: isort options

https://github.com/PyCQA/isort/wiki/isort-Settings

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* move import os (mpl)

* move import yt (mpl)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Cleanup around matplotlib.use

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Cleaning: double np and lib

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/Examples/Tests/plasma_lens/analysis.py b/Examples/Tests/plasma_lens/analysis.py
index 094870eaf..f13ecb00f 100755
--- a/Examples/Tests/plasma_lens/analysis.py
+++ b/Examples/Tests/plasma_lens/analysis.py
@@ -15,11 +15,13 @@ The final positions are compared to the analytic solutions.
 The motion is slow enough that relativistic effects are ignored.
 """
 
-import sys
 import os
-import yt
+import sys
+
 import numpy as np
-from scipy.constants import e, m_e, c
+from scipy.constants import c, e, m_e
+import yt
+
 yt.funcs.mylog.setLevel(0)
 sys.path.insert(1, '../../../../warpx/Regression/Checksum/')
 import checksumAPI