Question

Python下面简单程序能加:如果按"Enter（回车键，或者Esc键）"退出，最好提示Y退出，N不退出。

while True:
input = raw_input('请输入: ')
try:
input = int(input)
if input%2 == 0:
print input," 是偶数:"
else:
print input," 是奇数:"
except:
input = str(input)
if not ' ' in input:
print input,"是字符串，长度为:",len(input)
else:
print input,"是一句子，共有",input.count(' '),"个空格！"
现在按回车键，默认是”0字符串“。一直让你输入，退出不了。除非关闭窗口，有没有内部停止的方法呀？

Answer 1

while True:
	    input = raw_input('请输入: ')
	    try:
	        input = int(input)
	        if input%2 == 0:
	            print input," 是偶数:"
	        else:
	            print input," 是奇数:"
	    except:
	        input = str(input)
	        if not len(input):
	            inputExit = raw_input('Y退出，N不退出:')
	            if  str(inputExit) == 'Y':
	                break;
	            else:
	                continue;
	        if not ' ' in input:
	            print input,"是字符串，长度为:",len(input)
	        else:
	            print input,"是一句子，共有",input.count(' '),"个空格！"