BUG: Add SparseArray.all

Author: Licht-T

pandas/compat/numpy/function.py

@@ -184,6 +184,12 @@ def validate_cum_func_with_skipna(skipna, args, kwargs, name):
     return skipna
 
 
+ALLANY_DEFAULTS = OrderedDict()
+ALLANY_DEFAULTS['dtype'] = None
+ALLANY_DEFAULTS['out'] = None
+validate_all = CompatValidator(ALLANY_DEFAULTS, fname='all',
+                               method='both', max_fname_arg_count=1)
+
 LOGICAL_FUNC_DEFAULTS = dict(out=None)
 validate_logical_func = CompatValidator(LOGICAL_FUNC_DEFAULTS, method='kwargs')
 

pandas/core/sparse/array.py

@@ -614,6 +614,27 @@ def fillna(self, value, downcast=None):
         return self._simple_new(new_values, self.sp_index,
                                 fill_value=fill_value)
 
+    def all(self, axis=0, *args, **kwargs):
+        """
+        Tests whether all elements evaluate True
+
+        Returns
+        -------
+        all : bool
+
+        See Also
+        --------
+        numpy.all
+        """
+        nv.validate_all(args, kwargs)
+
+        values = self.sp_values
+
+        if len(values) != len(self) and not np.all(self.fill_value):
+            return False
+
+        return values.all()
+
     def sum(self, axis=0, *args, **kwargs):
         """
         Sum of non-NA/null values