Question

def cond(a,b):
    if (a>2 and 99+a<b):
        return True
    else:
        return False

def priiiiint(a,b):
    br=0
    for i in range(a,b+1):
        if(i%5==0 and i%7!=0):
            print('number {} dividable by 5 but not by 7! '.format(i))
            br+=1
    return(br)

def main():
    kraj=True
    while (kraj):
         a=int(input('nmbr AAAA: '))
         b=int(input('nmbr BBBB: '))
         if cond(a,b):
             priiiiint(a,b)
             kraj=False
         else:
             print('try again, b is not greater than a by 99 or more')
    br=priiiiint(a,b)
    print('there was total {} ...numbers'.format(br))

当我使用数字例如a = 5和b = 105时，它会列出正确的结果，但它会这样做两次......我不知道为什么......帮助apretiated：）

Answer 1

您正在调用prnt(a, b)两次，因此会打印两次数字。

Answer 2

您正在呼叫priiiiint(a,b)两次，因此它会打印两次。
这就是你应该做的你喜欢的代码：

def main():
    kraj=True
    while (kraj):
         a=int(input('nmbr AAAA: '))
         b=int(input('nmbr BBBB: '))
         if cond(a,b):
             # Add br= here.
             br=priiiiint(a,b)
             kraj=False
         else:
             print('try again, b is not greater than a by 99 or more')
    # This line prints everthing another time: 
    #br=priiiiint(a,b)
    print('there was total {} ...numbers'.format(br))

结果：

nmbr AAAA: 5                                                                                                                                                                                                                                   
nmbr BBBB: 105                                                                                                                                                                                                                                 
number 5 dividable by 5 but not by 7!                                                                                                                                                                                                          
number 10 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 15 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 20 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 25 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 30 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 40 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 45 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 50 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 55 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 60 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 65 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 75 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 80 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 85 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 90 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 95 dividable by 5 but not by 7!                                                                                                                                                                                                         
number 100 dividable by 5 but not by 7!                                                                                                                                                                                                        
there was total 18 ...numbers

为您提供有关代码的其他建议。
你也可以这样写下来：

def main():
    while True:
         a=int(input('nmbr AAAA: '))
         b=int(input('nmbr BBBB: '))
         if cond(a,b):
             # Add br= here.
             br=priiiiint(a,b)
             break
         else:
             print('try again, b is not greater than a by 99 or more')
    print('there was total {} ...numbers'.format(br))

如果你有一个True的循环，它将始终运行，并在遇到break时退出该循环。你的也很好，但这是一个更简单的版本，因为你需要更少的代码行，你的代码看起来更干净。

Python功能加倍打印

2 个答案: