Module « numpy.ctypeslib »

Fonction as_ctypes_type - module numpy.ctypeslib

Signature de la fonction as_ctypes_type

def as_ctypes_type(dtype) 

Description

as_ctypes_type.__doc__

        Convert a dtype into a ctypes type.

        Parameters
        ----------
        dtype : dtype
            The dtype to convert

        Returns
        -------
        ctype
            A ctype scalar, union, array, or struct

        Raises
        ------
        NotImplementedError
            If the conversion is not possible

        Notes
        -----
        This function does not losslessly round-trip in either direction.

        ``np.dtype(as_ctypes_type(dt))`` will:

         - insert padding fields
         - reorder fields to be sorted by offset
         - discard field titles

        ``as_ctypes_type(np.dtype(ctype))`` will:

         - discard the class names of `ctypes.Structure`\ s and
           `ctypes.Union`\ s
         - convert single-element `ctypes.Union`\ s into single-element
           `ctypes.Structure`\ s
         - insert padding fields