Python零基础学习 问题及作业 问题待续

先上问题：input BIF

看下面这段代码，无论怎么测试都退不出循环，很郁闷

print('=-------------闰年计算器-------------=')
print('注意：输入查询的年份，格式：XXXX，如2014')
temp = 1
while temp != 110:
temp = input('请输入查询的年份： ')
while temp.isdigit() != 1:
temp = input('对不起，输入格式为正数！重新输入：')
year = int(temp)
if year / 400 == int(year / 400):
print('公元', temp, '年是闰年！')
else:
if (year / 4 == int(year / 4)) and (year / 100 == int(year / 100)):
print('公元', temp, '年是闰年！')
else:
print('公元', temp, '年是平年！')
print('GameOver')

为了方便测试，简化一下代码

temp = 0
while temp != 520:
temp = input('enter a number:')
print(temp)

结果是这样的：

enter a number:520

520

enter a number:520

520

enter a number:520

520

enter a number:

想办法解决，查看 while 和 input 两个BIF

>>> help(input)

Help on built-in function input in module builtins:

input(prompt=None, /)

Read a string from standard input. The trailing newline is stripped.The prompt string, if given, is printed to standard output without a trailing newline before reading input.

哎呀我去，

input-read a string from standard input

update code

temp = 0
while temp != '520':
temp = input('enter a number:')
print(temp)

print('=-------------闰年计算器-------------=')
print('注意：输入查询的年份，格式：XXXX，如2014')
temp = 1
while temp != '110':
temp = input('请输入查询的年份： ')
while temp.isdigit() != 1:
temp = input('对不起，输入格式为正数！重新输入：')
year = int(temp)
if year / 400 == int(year / 400):
print('公元', temp, '年是闰年！')
else:
if (year / 4 == int(year / 4)) and (year / 100 == int(year / 100)):
print('公元', temp, '年是闰年！')
else:
print('公元', temp, '年是平年！')
print('GameOver')

总结：BIF使用时，一定要注意