Python的列表方法附加和擴充套件有什麼區別?

append :在末尾附加物件.

 x = [1, 2, 3]
x.append([4, 5])
print (x)
 

給你:[1, 2, 3, [4, 5]]

extend :透過從iterable中附加元素擴充套件列表.

 x = [1, 2, 3]
x.extend([4, 5])
print (x)
 

給你:[1, 2, 3, 4, 5]