Question

列表项

# To put values in list till user want
#comparing value entered with the ascii value ofenter
# key , if enter then come out of infinite loop
# why break is not breaking out on enter press
#if value is not enter_key thn put this value in list
x=1
lis=[]
while x == 1 :
    var = str(input())
    if var == chr(10):  
        break                     
    lis.append(var)    

print("i m free now from infinite loop")
print(lis)

Answer 1

如果在str(input())提示下用户按下Enter键而不输入任何内容，则返回值将为空字符串。因此，您不应该将var与chr(10)（换行符（\n）进行比较。而是尝试以下方法：

x=1
lis=[]
while x == 1 :
    var = str(input())
    if var == "":            #Compare to an empty string!
        break                     
    lis.append(var)    

print("i m free now from infinite loop")
print(lis)

Answer 2

我认为用户想要的是停在一个空字符串上。所以我将代码编写如下

a_list=[]

while True :
    var = input('What is your input: ')
    if not var:
        break
    a_list.append(var)

print("I'm free now from the infinite loop")
print(a_list)

为什么对于这小段代码来说Break不是打破循环？

2 个答案: