python笔记-tuple元组的方法

#!/usr/bin/env python
#-*- coding:utf-8 -*-

# 创建空元组
tuple1 = ()
print(tuple)
# 创建带有元素的元组
# 元组中的类型可以不同
tuple2 = (1,2,3,"good",True)
print(tuple2)
# 定义只有一个元素的元组
tuple3 = (1, )
print(tuple3)
print(type(tuple3))


# 元组元素的访问
# 格式:元组名[下标]
# 下标从0开始
# 取值
tuple4 = (1,2,3,4,5)
print(tuple4[0])
print(tuple4[1])
print(tuple4[2])
print(tuple4[3])
print(tuple4[4])
# print(tuple4[5]) #下标超过了范围(越界)
# 获取最后一个元素
print(tuple4[-1])
print(tuple4[-2])




# 修改元组
tuple5 = (1,2,3,4,5,[6,7,8])
# tuple5[0] = 100    #报错,元组不能变
# tuple5[-1] = [1,2,3]
tuple5[-1][0] = 100
print(tuple5)



# 删除元组
tuple6 = (1,2,3)
del tuple6
# print(tuple6)




# 元组的操作
t7 = (1,2,3)
t8 = (4,5,6)
print(t7 + t8)
t9 = t7 + t8
print(t9)


# 元组的重复
t9 = (1,2,3)
print(t9 * 3)



# 判断元素是否在元组中
t1 = (1,2,3)
print(1 in t1)


# 元组的截取
# 格式:元组名[开始下标:结束下标]
# 从开始下标开始截取,截取到结束下标之前
t12 = (1,2,3,4,5,6,7,8,9)
print(t12[2:7])
print(t12[2:])
print(t12[:7])




# 二维元组: 元素为一维元组的元组
t13 = ((1,2,3),(4,5,6),(7,8,9))
print(t13[1][1])




# 元组的方法
# len()  返回元组中元素的个数
t14 = (1,2,3,4,5)
print(len(t14))


# max()   返回元组中最大值
# min()   返回元组中最小值
print(min((1,2,3,4,5)))
print(max((1,2,4,32,6)))




# 将列表转成元组
list = [1,2,3,4]
t15 = tuple(list)
print(t15)


# 元组的遍历
for i in (1,2,3,4,5):
    print(i)