Skip to main content
`Ctrl`+`K`

# pandas.errors.UnsupportedFunctionCall

exception pandas.errors.UnsupportedFunctionCall

  Exception raised when attempting to call a unsupported numpy function.

  For example, `np.cumsum(groupby_object)`.

  Examples

      >>> df = pd.DataFrame({"A": [0, 0, 1, 1],
      ...                    "B": ["x", "x", "z", "y"],
      ...                    "C": [1, 2, 3, 4]}
      ...                   )
      >>> np.cumsum(df.groupby(["A"]))
      Traceback (most recent call last):
      UnsupportedFunctionCall: numpy operations are not valid with groupby.
      Use .groupby(...).cumsum() instead