# Copyright(C) 2018 刘珅珅
# Environment: python 3.6.4
# Create Date: 2018.3.30
# 元组
# 不能修改元组中元素的值
dimensions = (200, 50)

for dimension in dimensions:
    print(dimension)
print()

# 可以修改元组的值
dimensions = (400, 60)
for dimension in dimensions:
    print(dimension)
