Python_tuple

# 切片
tuple_1 = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
tuple_2 = tuple_1[1:9]
print(tuple_2)
# OUT:(2, 3, 4, 5, 6, 7, 8, 9)

# 元组不能删减，但是可以添加（合并元组,产生一个新元组，新元组和原有的元组在内存中是独立的）
tuple_3 = tuple_1 + tuple_2
print(tuple_3)
# OUT:(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9)

# 重复（*）
tuple_4 = (1, 2, 3) * 3
print(tuple_4)
# OUT:(1, 2, 3, 1, 2, 3, 1, 2, 3)

# 迭代元组元组
tuple_5 = (1, 2, 3)
for i in tuple_5:
    print(i)
'''
1
2
3
'''

#判断和统计元素在元组中出现的次数
print(2 in tuple_5)
print(4 in tuple_5)
print(tuple_4.count(2))
'''
True
False
3
'''

#元组和列表的互相转换
list_0=[1,2,3]
tuple_0=(4,5,6)
tuple_00=tuple(list_0)
list_00=list(tuple_0)
print(tuple_00)
print(list_00)
'''
(1, 2, 3)
[4, 5, 6]
'''