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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def c_array(ctype, values):
 """Convert a python string to c array."""

    if isinstance(values, np.ndarray) and values.dtype.itemsize == ctypes.sizeof(ctype):
        return (ctype * len(values)).from_buffer_copy(values)
    return (ctype * len(values))(*values)