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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 match_source(self, src):
 """Look for source or sources in the model that match the given source. Sources are matched by name and any association columns defined in the assoc_xmatch_columns parameter. """


        srcs = []

        names = [src.name]
        for col in self.config['assoc_xmatch_columns']:
            if col in src.assoc and src.assoc[col]:
                names += [src.assoc[col]]

        for name in names:
            name = name.replace(' ', '').lower()
            if name not in self._src_dict:
                continue
            srcs += [s for s in self._src_dict[name] if s not in srcs]

        return srcs