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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 Preprocess(self, data):
 """Preprocess the given data, ready for parsing."""

    # Add whitespace to line continuations.
    data = data.replace(":\\", ": \\")

    # Strip comments manually because sudoers has multiple meanings for '#'.
    data = SudoersFieldParser.COMMENTS_RE.sub("", data)
    return data