Mini Shell

"""
This module is here to ensure compatibility of Windows/Linux/MacOS and
different Python versions.
"""
import errno
import sys
import pickle


def pickle_load(file):
    try:
        return pickle.load(file)
    # Python on Windows don't throw EOF errors for pipes. So reraise them with
    # the correct type, which is caught upwards.
    except OSError:
        if sys.platform == 'win32':
            raise EOFError()
        raise


def pickle_dump(data, file, protocol):
    try:
        pickle.dump(data, file, protocol)
        # On Python 3.3 flush throws sometimes an error even though the writing
        # operation should be completed.
        file.flush()
    # Python on Windows don't throw EPIPE errors for pipes. So reraise them with
    # the correct type and error number.
    except OSError:
        if sys.platform == 'win32':
            raise IOError(errno.EPIPE, "Broken pipe")
        raise