def _func_args_from_dict(self, d):
filtered_d = self.filter_out_none_valued_keys(d)<EOL>return '<STR_LIT:U+002CU+0020>'.join(['<STR_LIT>' % (k, v) for k, v in filtered_d.items()])<EOL>
Given a Python dictionary, creates a string representing arguments
        for invoking a function. All arguments with a value of None are
        ignored.