列表的魔法（二）

9、转换

字符串转换列表 li = list("puouujjdlslsodidihsih"),内部使用for循环

 

#in 操作
li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
li[4][1][0]
print(li[5])
print(li[0])

 

li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
s = "puouujjdlslsodidihsih"
new_li = list(s)
print(new_li)


10、列表转换字符串
需要自己写for循环一个一个处理：既有数字又有字符串
直接使用字符串join方法：列表中的元素只有字符串

li = [11,22,33,"123","alex"]
s = ""
for i in li:
    s = s + str(i)
print(s)

li = ["123","alex"]
v = "".join(li)
print(v)