Style-fix some examples and update .flake8 per-file-ignores.

Author: anntzer

.flake8

@@ -101,7 +101,7 @@ per-file-ignores =
 
     examples/animation/frame_grabbing_sgskip.py: E402
     examples/axes_grid1/inset_locator_demo.py: E402
-    examples/axes_grid1/scatter_hist_locatable_axes.py: E401, E402
+    examples/axes_grid1/scatter_hist_locatable_axes.py: E402
     examples/axisartist/demo_curvelinear_grid.py: E402
     examples/color/color_by_yvalue.py: E402
     examples/color/color_cycle_default.py: E402
@@ -178,32 +178,31 @@ per-file-ignores =
     examples/pie_and_polar_charts/polar_legend.py: E402
     examples/pie_and_polar_charts/polar_scatter.py: E402
     examples/pyplots/align_ylabels.py: E402
-    examples/pyplots/annotate_transform.py: E228, E251, E402
+    examples/pyplots/annotate_transform.py: E251, E402
     examples/pyplots/annotation_basic.py: E402
-    examples/pyplots/annotation_polar.py: E231, E402
-    examples/pyplots/auto_subplots_adjust.py: E231, E302, E402
+    examples/pyplots/annotation_polar.py: E402
+    examples/pyplots/auto_subplots_adjust.py: E302, E402
     examples/pyplots/axline.py: E402
-    examples/pyplots/boxplot_demo_pyplot.py: E231, E402
-    examples/pyplots/compound_path_demo.py: E231
+    examples/pyplots/boxplot_demo_pyplot.py: E402
     examples/pyplots/dollar_ticks.py: E402
     examples/pyplots/fig_axes_customize_simple.py: E402
     examples/pyplots/fig_axes_labels_simple.py: E402
     examples/pyplots/fig_x.py: E402
-    examples/pyplots/pyplot_formatstr.py: E231, E402
-    examples/pyplots/pyplot_mathtext.py: E231, E402
+    examples/pyplots/pyplot_formatstr.py: E402
+    examples/pyplots/pyplot_mathtext.py: E402
     examples/pyplots/pyplot_scales.py: E402
-    examples/pyplots/pyplot_simple.py: E231, E402
+    examples/pyplots/pyplot_simple.py: E402
     examples/pyplots/pyplot_text.py: E402
     examples/pyplots/pyplot_three.py: E402
     examples/pyplots/pyplot_two_subplots.py: E402
-    examples/pyplots/text_commands.py: E231, E402
-    examples/pyplots/text_layout.py: E231, E402
+    examples/pyplots/text_commands.py: E402
+    examples/pyplots/text_layout.py: E402
     examples/pyplots/whats_new_1_subplot3d.py: E402
-    examples/pyplots/whats_new_98_4_fill_between.py: E225, E402
-    examples/pyplots/whats_new_98_4_legend.py: E228, E402
+    examples/pyplots/whats_new_98_4_fill_between.py: E402
+    examples/pyplots/whats_new_98_4_legend.py: E402
     examples/pyplots/whats_new_99_axes_grid.py: E402
     examples/pyplots/whats_new_99_mplot3d.py: E402
-    examples/pyplots/whats_new_99_spines.py: E231, E402
+    examples/pyplots/whats_new_99_spines.py: E402
     examples/scales/power_norm.py: E402
     examples/scales/scales.py: E402
     examples/shapes_and_collections/artist_reference.py: E402

examples/axes_grid1/scatter_hist_locatable_axes.py

@@ -73,7 +73,8 @@
 # The use of the following functions, methods and classes is shown
 # in this example:
 
-import matplotlib, mpl_toolkits
+import matplotlib
+import mpl_toolkits
 mpl_toolkits.axes_grid1.axes_divider.make_axes_locatable
 matplotlib.axes.Axes.set_aspect
 matplotlib.axes.Axes.scatter

examples/pyplots/text_commands.py

@@ -19,7 +19,7 @@
 ax.set_ylabel('ylabel')
 
 ax.text(3, 8, 'boxed italics text in data coords', style='italic',
-        bbox={'facecolor':'red', 'alpha':0.5, 'pad':10})
+        bbox={'facecolor': 'red', 'alpha': 0.5, 'pad': 10})
 
 ax.text(2, 6, r'an equation: $E=mc^2$', fontsize=15)
 

examples/pyplots/whats_new_98_4_fill_between.py

@@ -14,8 +14,8 @@
 
 fig, ax = plt.subplots()
 ax.plot(x, y1, x, y2, color='black')
-ax.fill_between(x, y1, y2, where=y2 >y1, facecolor='yellow', alpha=0.5)
-ax.fill_between(x, y1, y2, where=y2 <=y1, facecolor='red', alpha=0.5)
+ax.fill_between(x, y1, y2, where=(y2 > y1), facecolor='yellow', alpha=0.5)
+ax.fill_between(x, y1, y2, where=(y2 <= y1), facecolor='red', alpha=0.5)
 ax.set_title('Fill Between')
 
 plt.show()

examples/pyplots/whats_new_98_4_legend.py

@@ -12,7 +12,7 @@
 ax = plt.subplot(111)
 t1 = np.arange(0.0, 1.0, 0.01)
 for n in [1, 2, 3, 4]:
-    plt.plot(t1, t1**n, label="n=%d"%(n,))
+    plt.plot(t1, t1**n, label=f"n={n}")
 
 leg = plt.legend(loc='best', ncol=2, mode="expand", shadow=True, fancybox=True)
 leg.get_frame().set_alpha(0.5)