code: def p_casecontent_condition_single(self, p):
          'casecontent_condition : casecontent_condition COMMA expression'
          p[0] = p[1] + (p[3],)
          p.set_lineno(0, p.lineno(1)f p_casecontent_condition_single(self, p):
          'casecontent_condition : casecontent_condition COMMA expression'
          p[0] = p[1] + (p[3],)
          p.set_lineno(0, p.lineno(1))
docs: casecontent_condition : casecontent_condition COMMA expression