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# pandas.api.types.is_signed_integer_dtype

pandas.api.types.is_signed_integer_dtype(arr_or_dtype)

  Check whether the provided array or dtype is of a signed integer dtype.

  Unlike in is_any_int_dtype, timedelta64 instances will return False.

  The nullable Integer dtypes (e.g. pandas.Int64Dtype) are also considered as integer by this function.

  Parameters:
    arr_or_dtypearray-like or dtype

      The array or dtype to check.

  Returns:
    boolean

      Whether or not the array or dtype is of a signed integer dtype and not an instance of timedelta64.

  Examples

      >>> from pandas.core.dtypes.common import is_signed_integer_dtype
      >>> is_signed_integer_dtype(str)
      False
      >>> is_signed_integer_dtype(int)
      True
      >>> is_signed_integer_dtype(float)
      False
      >>> is_signed_integer_dtype(np.uint64)  # unsigned
      False
      >>> is_signed_integer_dtype('int8')
      True
      >>> is_signed_integer_dtype('Int8')
      True
      >>> is_signed_integer_dtype(pd.Int8Dtype)
      True
      >>> is_signed_integer_dtype(np.datetime64)
      False
      >>> is_signed_integer_dtype(np.timedelta64)
      False
      >>> is_signed_integer_dtype(np.array(['a', 'b']))
      False
      >>> is_signed_integer_dtype(pd.Series([1, 2]))
      True
      >>> is_signed_integer_dtype(np.array([], dtype=np.timedelta64))
      False
      >>> is_signed_integer_dtype(pd.Index([1, 2.]))  # float
      False
      >>> is_signed_integer_dtype(np.array([1, 2], dtype=np.uint32))  # unsigned
      False