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# numpy.finfo

class `numpy.``finfo`

  Machine limits for floating point types.

  Parameters: | dtype : float, dtype, or instance Kind of floating point data-type about which to get information.

  See also

  `MachAr`
    The implementation of the tests that produce this information.
  `iinfo`
    The equivalent for integer data types.

  Notes

  For developers of NumPy: do not instantiate this at the module level. The initial calculation of these parameters is expensive and negatively impacts import times. These objects are cached, so calling `finfo()` repeatedly inside your functions is not a problem.

  Attributes