code: def p_task_statement(self, p):
          'task_statement : taskvardecls task_calc'
          p[0] = p[1] + (p[2],)
          p.set_lineno(0, p.lineno(1)f p_task_statement(self, p):
          'task_statement : taskvardecls task_calc'
          p[0] = p[1] + (p[2],)
          p.set_lineno(0, p.lineno(1))
docs: task_statement : taskvardecls task_calc