[已解决]为什么这个执行不出来呢

pionrrt

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 just give the function numbers directly:")
    
cheese_and_crackers(20,30)

最佳答案

月排行榜 / 总排行榜

isdkz

2023-6-12 17:07:31

代码执行错误是因为你的字符串格式化操作（%操作符）在打印语句外部进行。你应该将%操作符以及后续的变量放在括号内，这样就可以将字符串中的%r替换为变量的值。正确的代码应该如下：

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 just give the function numbers directly:")

cheese_and_crackers(20, 30)

另外，注意到在你的代码中，"We can just give the function numbers directly:"这句话应该在函数调用前打印，而不是在函数内部打印。如下所示：

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 just give the function numbers directly:")
cheese_and_crackers(20, 30)

以上修改过后的代码应该可以正常运行了。

跳转到最佳答案楼层

isdkz

代码执行错误是因为你的字符串格式化操作（%操作符）在打印语句外部进行。你应该将%操作符以及后续的变量放在括号内，这样就可以将字符串中的%r替换为变量的值。正确的代码应该如下：

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 just give the function numbers directly:")

cheese_and_crackers(20, 30)

另外，注意到在你的代码中，"We can just give the function numbers directly:"这句话应该在函数调用前打印，而不是在函数内部打印。如下所示：

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 just give the function numbers directly:")
cheese_and_crackers(20, 30)

以上修改过后的代码应该可以正常运行了。