DOC: standardize on exc for arg/variable name

tacaswell · tacaswell · commit 76a9b59973fa · 2017-08-23T22:09:33.000-04:00
diff --git a/doc/api/api_changes/2017-08_TAC.rst b/doc/api/api_changes/2017-08_TAC.rst
@@ -21,10 +21,10 @@ restore the previous behavior pass ``None`` ::
 
 A function which take and ``Exception`` as its only argument may also be passed ::
 
-  def maybe_reraise(excp):
-      if isinstance(excp, RuntimeError):
+  def maybe_reraise(exc):
+      if isinstance(exc, RuntimeError):
           pass
       else:
-          raise excp
+          raise exc
 
   cb = CallbackRegistry(exception_handler=maybe_reraise)
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
@@ -296,7 +296,7 @@ class CallbackRegistry(object):
     exception_handler : callable, optional
        If provided must have signature ::
 
-          def handler(exception: Exception) -> None:
+          def handler(exc: Exception) -> None:
 
        If not None this function will be called with any `Exception`
        subclass raised by the callbacks in `CallbackRegistry.process`.
@@ -391,9 +391,9 @@ def process(self, s, *args, **kwargs):
                     self._remove_proxy(proxy)
                 # this does not capture KeyboardInterrupt, SystemExit,
                 # and GeneratorExit
-                except Exception as e:
+                except Exception as exc:
                     if self.exception_handler is not None:
-                        self.exception_handler(e)
+                        self.exception_handler(exc)
                     else:
                         raise
 
