def __len__(self):
    '\n        Number of gAttributes in this CDF\n\n        Returns\n        =======\n        out : int\n            number of gAttributes in the CDF\n        '
    count = ctypes.c_long(0)
    self._cdf_file._call(const.GET_, const.CDF_NUMgATTRS_, ctypes.byref(count))
    return count.value
Number of gAttributes in this CDF

Returns
=======
out : int
    number of gAttributes in the CDF
def __len__(self):
    '\n        Number of gAttributes in this CDF\n\n        Returns\n        =======\n        out : int\n            number of gAttributes in the CDF\n        '
    count = ctypes.c_long(0)
    self._cdf_file._call(const.GET_, const.CDF_NUMgATTRS_, ctypes.byref(count))
    return count.value