Check if aspect is a string to avoid comparing numpy array to tuple of strings

dstansby · dstansby · commit a33be777cb70 · 2016-12-21T17:53:58.000Z
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -1282,7 +1282,7 @@ def set_aspect(self, aspect, adjustable=None, anchor=None):
           etc.
           =====   =====================
         """
-        if aspect in ('equal', 'auto'):
+        if isinstance(aspect, str) and aspect in ('equal', 'auto'):
             self._aspect = aspect
         else:
             self._aspect = float(aspect)  # raise ValueError if necessary
