A file extension is not necessarily the only dot in a path. savefig() now understands this.

jerith · Neil · commit fb9029e8ca84 · 2011-03-09T17:54:20.000+02:00
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -34,6 +34,7 @@
 from matplotlib import docstring
 
 from operator import itemgetter
+import os.path
 
 docstring.interpd.update(projection_names = get_projection_names())
 
@@ -1062,7 +1063,7 @@ def savefig(self, *args, **kwargs):
         kwargs.setdefault('dpi', rcParams['savefig.dpi'])
 
         extension = rcParams['savefig.extension']
-        if args and is_string_like(args[0]) and '.' not in args[0] and extension != 'auto':
+        if args and is_string_like(args[0]) and '.' not in os.path.splitext(args[0])[-1] and extension != 'auto':
             fname = args[0] + '.' + extension
             args = (fname,) + args[1:]
 
