numpy_pickle.py 文件源码

def __init__(self, fp, protocol=None):
        self.file_handle = fp
        self.buffered = isinstance(self.file_handle, BinaryZlibFile)

        # By default we want a pickle protocol that only changes with
        # the major python version and not the minor one
        if protocol is None:
            protocol = (pickle.DEFAULT_PROTOCOL if PY3_OR_LATER
                        else pickle.HIGHEST_PROTOCOL)

        Pickler.__init__(self, self.file_handle, protocol=protocol)
        # delayed import of numpy, to avoid tight coupling
        try:
            import numpy as np
        except ImportError:
            np = None
        self.np = np