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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 get_style_defs(self, arg=''):
 """ Return the command sequences needed to define the commands used to format text in the verbatim environment. ``arg`` is ignored. """

        cp = self.commandprefix
        styles = []
        for name, definition in iteritems(self.cmd2def):
            styles.append(r'\expandafter\def\csname %s@tok@%s\endcsname{%s}' %
                          (cp, name, definition))
        return STYLE_TEMPLATE % {'cp': self.commandprefix,
                                 'styles': '\n'.join(styles)}