PEP 8种早于清单理解。我通常在逻辑位置将它们分解成多行：
memberdef_list = [elem for elem in from_cache(classname, 'memberdefs') if elem.argsstring != '[]' and'std::string' in null2string(elem.vartype)]
不过，大多数情况下，我首先会放弃涉及的测试：
def stdstring_args(elem): if elem.argstring == '[]': return False return 'std::string' in null2string(elem.vartype)memberdef_list = [elem for elem in from_cache(classname, 'memberdefs') if stdstring_args(elem)]
