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, 4 insertions, 2 deletions

diff --git a/Examples/Modules/RigidInjection/analysis_rigid_injection_LabFrame.py b/Examples/Modules/RigidInjection/analysis_rigid_injection_LabFrame.py
index c764ef357..624fd8f7c 100755
--- a/Examples/Modules/RigidInjection/analysis_rigid_injection_LabFrame.py
+++ b/Examples/Modules/RigidInjection/analysis_rigid_injection_LabFrame.py
@@ -20,10 +20,12 @@ case rigid injection is OFF (i.e., the beam starts expanding from -5 microns),
 in which case a warning is raised.
 '''
 
+import os
 import sys
-import yt
+
 import numpy as np
-import os
+import yt
+
 yt.funcs.mylog.setLevel(0)
 sys.path.insert(1, '../../../../warpx/Regression/Checksum/')
 import checksumAPI