Python的list方法append和extend有什么区别?
问题描述：
列表方法append()和extend()有什么区别?
What's the difference between the list methods append() and extend()?
答
append: Appends object at the end.
x = [1, 2, 3]
x.append([4, 5])
print (x)
给您:[1, 2, 3, [4, 5]]
extend :通过追加列表来扩展列表可迭代元素.
extend: Extends list by appending elements from the iterable.
x = [1, 2, 3]
x.extend([4, 5])
print (x)
给您:[1, 2, 3, 4, 5]