Python之列表的插入&替换修改 Python之列表的插入&替换修改方法

fruit = ['pineapple','grape','pear']

fruit[0:0] = ['Orange']  #在fruit集合中第一位插入字符串'Orange'

print(fruit)     #['Orange','pineapple','grape','pear']

fruit[0] = 'Grapefruit'  #将fruit集合的第一位元素替换为'Grapefruit'

print(fruit)     #['Grapefruit','pineapple','grape','pear']

fruit[0:0] = 'Grapefruit'      

print(fruit) #['G','r','a','p','e','f','r','u','i','t','Grapefruit','pineapple','grape','pear']