CLN: Add __bool__ alias for __nonzero__

Python3 uses __bool__, not __nonzero__
mlovci · Jul 29, 2013 · 0c0cfbc · 0c0cfbc
1 parent b83784f
commit 0c0cfbc
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diff --git a/pandas/core/generic.py b/pandas/core/generic.py
@@ -651,6 +651,9 @@ def empty(self):
     def __nonzero__(self):
         return not self.empty
 
+    # Python 3 compat
+    __bool__ = __nonzero__
+
     @property
     def ndim(self):
         return self._data.ndim

diff --git a/pandas/core/internals.py b/pandas/core/internals.py
@@ -1016,6 +1016,9 @@ def make_empty(self):
     def __nonzero__(self):
         return True
 
+    # Python3 compat
+    __bool__ = __nonzero__
+
     @property
     def ndim(self):
         return len(self.axes)