Fix some mysterious flake8 errors

alexrudy · alexrudy · commit 4763de1b025b · 2019-10-01T14:45:00.000-07:00
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -45,6 +45,7 @@
 
 import numpy as np
 
+import matplotlib as mpl
 from matplotlib import (
     backend_tools as tools, cbook, colors, textpath, tight_bbox, transforms,
     widgets, get_backend, is_interactive, rcParams)
diff --git a/lib/matplotlib/tests/test_compare_images.py b/lib/matplotlib/tests/test_compare_images.py
@@ -1,4 +1,3 @@
-import os
 from pathlib import Path
 import shutil
 
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
@@ -14,7 +14,7 @@
 
 from matplotlib import (
     colors, image as mimage, patches, pyplot as plt, style,
-    rc_context, rcParams)
+    rcParams)
 from matplotlib.cbook import MatplotlibDeprecationWarning
 from matplotlib.image import (AxesImage, BboxImage, FigureImage,
                               NonUniformImage, PcolorImage)
