如何从 python 中的字符串中减去整数？

Question

我目前正在从头开发一个聊天机器人，作为 python class 简介的作业。在我的任务中，我需要至少有一个“数学组件”。我似乎无法找出如何从字符串中减去我的输入整数。

附件是一个屏幕截图，我的目标是让他们输入他们每周在家做饭的天数，然后自动从 7 中减去。

print('Hello! What is your name? ')
my_name = input ()
print('Nice to meet you ' + my_name)
print('So, ' + my_name + ' What is your favorite veggie?')
favorite_veggie = input ()
print('Thats nuts! ' +favorite_veggie + ' is mine too!')
print('How many days a week do you have cook at home? ')
day = input ()
print('So what do you do the other ' + ????? 'days?')

Answer 1

day = int(input())
print('So what do you do the other', 7-day, 'days?')

Answer 2

您正在寻找这个

day = input()
required_days = 7 - int(day)
print('So what do you do the other ' + str(required_days) + ' days?')

Answer 3

您可以将input的结果转换为int，然后做减法。另外 input("") 接受一个字符串作为参数，它会显示在提示区域的前面，这样可以使代码更好

my_name = input('Hello! What is your name? ')
print('Nice to meet you ' + my_name)

favorite_veggie = input('So, ' + my_name + ' What is your favorite veggie?')
print('Thats nuts! ' + favorite_veggie + ' is mine too!')

day = int(input('How many days a week do you have cook at home? '))
non_work_day = 7 - day
what_do = input('So what do you do the other ' + str(non_work_day) + 'days?')

如何从 python 中的字符串中减去整数？

How to have integer subtract from a string in python?

python

string

integer

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