Python pandas.core.ops.add_flex_arithmetic_methods() Examples

The following are 1 code examples of pandas.core.ops.add_flex_arithmetic_methods(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module pandas.core.ops , or try the search function .
Example #1
Source File: panel.py    From Computable with MIT License 4 votes vote down vote up 
def _add_aggregate_operations(cls, use_numexpr=True):
        """ add the operations to the cls; evaluate the doc strings again """

        # doc strings substitors
        _agg_doc = """
Wrapper method for %%s

Parameters
----------
other : %s or %s""" % (cls._constructor_sliced.__name__, cls.__name__) + """
axis : {""" + ', '.join(cls._AXIS_ORDERS) + "}" + """
Axis to broadcast over

Returns
-------
""" + cls.__name__ + "\n"

        def _panel_arith_method(op, name, str_rep=None, default_axis=None,
                                fill_zeros=None, **eval_kwargs):
            def na_op(x, y):
                try:
                    result = expressions.evaluate(op, str_rep, x, y,
                                                  raise_on_error=True,
                                                  **eval_kwargs)
                except TypeError:
                    result = op(x, y)

                # handles discrepancy between numpy and numexpr on division/mod
                # by 0 though, given that these are generally (always?)
                # non-scalars, I'm not sure whether it's worth it at the moment
                result = com._fill_zeros(result, y, fill_zeros)
                return result

            @Substitution(name)
            @Appender(_agg_doc)
            def f(self, other, axis=0):
                return self._combine(other, na_op, axis=axis)
            f.__name__ = name
            return f

        # add `div`, `mul`, `pow`, etc..
        ops.add_flex_arithmetic_methods(
            cls, _panel_arith_method, use_numexpr=use_numexpr,
            flex_comp_method=ops._comp_method_PANEL)