“NameError: name '' 未定义";用户在 Python 中输入后 [英] "NameError: name '' is not defined" after user input in Python

问题描述

我完全不知道为什么这不起作用.应该准确地工作，对吗?

I'm completely lost as to why this isn't working. Should work precisely, right?

UserName = input("Please enter your name: ")
print ("Hello Mr. " + UserName)
raw_input("<Press Enter to quit.>")

我收到此异常:

Traceback (most recent call last):  
  File "Test1.py", line 1, in <module>
    UserName = input("Please enter your name: ")
  File "<string>", line 1, in <module>
NameError: name 'k' is not defined  

它说 NameError 'k'，因为我在测试期间写了 'k' 作为输入.我读过打印语句以前没有括号，但现在已被弃用，对吗?

It says NameError 'k', because I wrote 'k' as the input during my tests. I've read that the print statement used to be without parenthesis but that has been deprecated right?

推荐答案

不要在 2.x 中使用 input().使用 raw_input() 代替.总是.

Do not use input() in 2.x. Use raw_input() instead. Always.

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