use repr

Author: TomAugspurger

pandas/core/arrays/base.py

@@ -661,7 +661,7 @@ def __repr__(self):
         from pandas.io.formats.printing import format_object_summary
 
         template = (
-            u'<{class_name}>\n'
+            u'{class_name}'
             u'{data}\n'
             u'Length: {length}, dtype: {dtype}'
         )
@@ -670,11 +670,17 @@ def __repr__(self):
         # any trailing newlines from format_object_summary
         data = format_object_summary(self, self._formatter(), name=False,
                                      trailing_comma=False).rstrip()
-        name = self.__class__.__name__
-        return template.format(class_name=name, data=data,
+        class_name = u'<{}>\n'.format(self.__class__.__name__)
+        return template.format(class_name=class_name, data=data,
                                length=len(self),
                                dtype=self.dtype)
 
+    def __bytes__(self):
+        from pandas.core.config import get_option
+
+        encoding = get_option("display.encoding")
+        return str(self).encode(encoding, 'replace')
+
     def _formatter(self, formatter=None):
         # type: (Optional[ExtensionArrayFormatter]) -> Callable[[Any], str]
         """Formatting function for scalar values.
@@ -705,7 +711,12 @@ def _formatter(self, formatter=None):
     def _formatting_values(self):
         # type: () -> np.ndarray
         # At the moment, this has to be an array since we use result.dtype
-        """An array of values to be printed in, e.g. the Series repr"""
+        """An array of values to be printed in, e.g. the Series repr
+
+        .. deprecated:: 0.24.0
+
+           Use :meth:`ExtensionArray._formatter` instead.
+        """
         return np.array(self)
 
     # ------------------------------------------------------------------------

pandas/core/arrays/categorical.py

@@ -499,7 +499,7 @@ def _constructor(self):
     def _from_sequence(cls, scalars, dtype=None, copy=False):
         return Categorical(scalars, dtype=dtype)
 
-    def _formatter(self, formatter):
+    def _formatter(self, formatter=None):
         # backwards compat with old printing.
         return None
 
@@ -1990,6 +1990,9 @@ def __unicode__(self):
 
         return result
 
+    def __repr__(self):
+        return super(ExtensionArray, self).__repr__()
+
     def _maybe_coerce_indexer(self, indexer):
         """ return an indexer coerced to the codes dtype """
         if isinstance(indexer, np.ndarray) and indexer.dtype.kind == 'i':