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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 make_python_name(self, name):
 """Transforms an USR into a valid python name."""

        # FIXME see cindex.SpellingCache
        for k, v in [('<', '_'), ('>', '_'), ('::', '__'), (',', ''), (' ', ''),
                     ("$", "DOLLAR"), (".", "DOT"), ("@", "_"), (":", "_"),
                     ('-', '_')]:
            if k in name:  # template
                name = name.replace(k, v)
            # FIXME: test case ? I want this func to be neutral on C valid
            # names.
            if name.startswith("__"):
                return "_X" + name
        if len(name) == 0:
            pass
        elif name[0] in "01234567879":
            return "_" + name
        return name