Do not run Windows' file system convert tool

cgohlke · cgohlke · commit 87c968bc7df9 · 2015-11-10T12:57:22.000-08:00
diff --git a/lib/matplotlib/animation.py b/lib/matplotlib/animation.py
@@ -262,6 +262,10 @@ def isAvailable(cls):
         Check to see if a MovieWriter subclass is actually available by
         running the commandline tool.
         '''
+        if platform.system() == 'Windows' and cls.bin_path() == 'convert':
+            # On Windows, the full path to convert must be specified in
+            # matplotlibrc since convert is also the name of a system tool.
+            return False
         try:
             p = subprocess.Popen(cls.bin_path(),
                              shell=False,
