Python中extend和append的区别讲解

append() 方法向列表的尾部添加一个新的元素。只接受一个参数。 >>> num = [1,2] >>> num.append(3) >>> num [1, 2, 3] >>> num.append('a') >>> num [1, 2, 3, 'a'] >>> num.append(6,7) Traceback (most recent call last): File <pyshell>, line 1, in <module> num.append(6,7) TypeError: append() takes exactly one argument (2 given