Question

下面的代码按预期工作，但是有更优雅的方法来完成这个吗？

如果我不使用int（）将raw_input更改为整数，则会将它们添加为字符串（即＆＃39; 10 + 10＆＃39; =＆＃39; 1010＆＃39; ）。

另外，我似乎无法将int（）添加到与raw_input相同的行中（即。

user_cheeses = raw_input("How many cheeses do you have?:\n> ").int()

），因为我收到了错误 - ＆＃39; str＆＃39;对象没有属性＆＃39; int＆＃39;。

def cheese_and_crackers(cheese_count, boxes_of_crackers):
    print "You have %r cheeses!" % cheese_count
    print "You have %r boxes of crackers!" % boxes_of_crackers
    print "Man that's enough for a party!"
    print "Get a blanket.\n"

print "We can put in inputs from you as well!:"
user_cheeses = raw_input("How many cheeses do you have?:\n> ")
user_cheeses_number = int(user_cheeses)

user_crackers = raw_input("How many boxes of crackers do you have?:\n >")
user_crackers_number = int(user_crackers)

cheese_and_crackers(user_cheeses, user_crackers)

print "You can also add even more cheeses and more crackers!:"
more_cheeses = raw_input("How many more cheeses do you now have?:\n> ")
more_cheeses_number = int(more_cheeses)

more_crackers = raw_input("How many more crackers do you now have?:\n> ")
more_crackers_number = int(more_crackers)

cheese_and_crackers(user_cheeses_number + more_cheeses_number, user_crackers_number + more_crackers_number)

Answer 1

int()不是字符串的方法。 int()是（内置）函数，因此您需要将其应用于raw_input()的结果：

user_cheeses = int(raw_input("How many cheeses do you have?:\n> "))

您可以通过将其应用于代码中的user_cheeses来间接执行此操作：

user_cheeses_number = int(user_cheeses)

其中user_cheeeses是raw_input()返回的字符串。

有更优雅的方式吗？练习19：艰难地学习Python

1 个答案: