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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 docx_preprocess(docx, batch=False):
 """ Load docx files from local filepath if not already b64 encoded """

    if batch:
        return [docx_preprocess(doc, batch=False) for doc in docx]

    if os.path.isfile(docx):
        # a filepath is provided, read and encode
        return b64encode(open(docx, 'rb').read())
    else:
        # assume doc is already b64 encoded
        return docx