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

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Examples/Physics_applications/laser_ion/visualize_densities_and_fields_2d.py

@@ -10,13 +10,15 @@
 # This script plots the densities and fields of a 2D laser-ion acceleration simulation.
 
 
+import argparse
 import os
-import numpy as np
-import matplotlib.pyplot as plt
+
 from matplotlib.colors import TwoSlopeNorm
+import matplotlib.pyplot as plt
+import numpy as np
 from openpmd_viewer import OpenPMDTimeSeries
 import scipy.constants as sc
-import argparse
+
 
 def create_analysis_dir(directory):
     if not os.path.exists(directory):
@@ -168,4 +170,4 @@ def visualize_field_iteration(ts, iteration, out_dir):
     else:
         for it in ts.iterations:
             visualize_density_iteration(ts, it, analysis_dir)
-            visualize_field_iteration(ts, args.iteration, analysis_dir)
+            visualize_field_iteration(ts, args.iteration, analysis_dir)