12 列表总结

1、增：

• append / insert

2、删：

• remove / pop / clear / del users[2]

3、改：

• users[3] = "新值"

4、查：

• 索引/切片

5、列表嵌套

users = ["alex",0,True,[11,22,33,"老男孩"],[1,['alex','oldboy'],2,3]]

users[0]
users[2]
users[0][2]
users[3] # [11,22,33,"老男孩"]
users[3][-1] # "老男孩"
users[3][-1][1] # '男'
users[3] = 666

强制转换

• list("asdfadfasfdadfasfd")

  无意义

v1 = list("asdfadfasfdadfasfd")
print(v1)

• list( (11,22,33,44,) )

v1 = list( (11,22,33,44,) )
print(v1)