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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 parse_file(self, inputstring, addhash=True):
 """Parse file code."""

        if addhash:
            use_hash = self.genhash(False, inputstring)
        else:
            use_hash = None
        return self.parse(inputstring, self.file_parser, {"nl_at_eof_check": True}, {"header": "file", "use_hash": use_hash})