元组类型

定义:与列表相比,只不过[]换成了(),主要用来读

l = ['a','b','c','d','e','f']
t = ('a','b','c','d','e','f')
l[0] =1
print(l)
t[0]
print(t[0])
#t[0] =1
print(t)
#报错

 按索引取值(只能读不能改)

t = ('a','b','c','d','e','f')
print(t[0])
print(t[1])

切片([:])

t = ('a','b','c','d','e','f')
print(t[0:4])#索引0到4范围的数值都要(不包括4)
print(t[:4])#索引为4之后的数值都不要(包括4)
print(t[4:])#索引为4之前的数值都不要(包括4)

长度(len)

t = ('a','b','c','d','e','f')
print(len(t))
print(t.__len__())

成员运算(in,not,in)

t = ('a','b','c','d','e','f')
if 'a' not in t:
    print('ok')
if t:
    print('OK')

循环

t = ('a','b','c','d','e','f')

for i in t:
print(i)
i=0
result = len(t)
while i < result:
    print(t[i])
    i += 1
原文地址:https://www.cnblogs.com/wangxudong/p/10059647.html