python3实践

　需求

name = [‘wangxiaohua‘,‘wangdashu‘,6,9,9,80,‘haha‘,‘alex‘,34,34,‘wq‘,34,9,‘dfd‘,34,9,‘weew‘]
找出name列表中有多少个9并且全部将9修改成9999
找出所有的34并且全部删除

　思维导图

　代码

name = [‘wangxiaohua‘,‘wangdashu‘,6,9,9,80,‘haha‘,‘alex‘,34,34,‘wq‘,34,9,‘dfd‘,34,9,‘weew‘]

#将name列表中的所有9修改成9999
for i in  range(name.count(9)):
    position_of_ele = name.index(9)
    name[position_of_ele] = 9999
    print(name)

#删除name列表中的所有34元素
for i in  range(name.count(34)):
    position_of_ele = name.index(34)
    name.remove(34)
    print(name)

#打印结果
‘‘‘
将全部9修改为9999
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9, 80, ‘haha‘, ‘alex‘, 34, 34, ‘wq‘, 34, 9, ‘dfd‘, 34, 9, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, 34, 34, ‘wq‘, 34, 9, ‘dfd‘, 34, 9, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, 34, 34, ‘wq‘, 34, 9999, ‘dfd‘, 34, 9, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, 34, 34, ‘wq‘, 34, 9999, ‘dfd‘, 34, 9999, ‘weew‘]

将34元素全部删除
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, 34, ‘wq‘, 34, 9999, ‘dfd‘, 34, 9999, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, ‘wq‘, 34, 9999, ‘dfd‘, 34, 9999, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, ‘wq‘, 9999, ‘dfd‘, 34, 9999, ‘weew‘]
[‘wangxiaohua‘, ‘wangdashu‘, 6, 9999, 9999, 80, ‘haha‘, ‘alex‘, ‘wq‘, 9999, ‘dfd‘, 9999, ‘weew‘]
‘‘‘