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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 filter(self, source_file, encoding):
 # noqa A001 """Parse file."""


        with codecs.open(source_file, 'r', encoding=encoding) as f:
            text = f.read()

        return [filters.SourceText(self._filter(text), source_file, encoding, 'context')]