练习14学习python的难办法

以下是练习中的代码：

from sys import argv script, user_name = argv prompt = '> ' print "Hi %s, I'm the %s script." % (user_name, script) print "I'd like to ask you a few questions." print "Do you like me %s?" % user_name likes = raw_input(prompt) print "Where do you live %s?" % user_name lives = raw_input(prompt) print "What kind of computer do you have?" computer = raw_input(prompt) print """ Alright, so you said %r about liking me. You live in %r. Not sure where that is. And you have a %r computer. Nice. """ % (likes, lives, computer)

现在我正在运行Windows 7，并且正在运行带有代码的CMD行

 python ex14.py myname

我得到这个错误：

 File "ex14.py", line 3 Python ex14.py, user_name SyntaxError: invalid syntax

可见字符中的脚本没有任何问题。

检查源代码中是否有Unicode空格，例如NO-BREAK SPACE字符。在同一个目录中创建一个新的脚本：

 with open('ex14.py', 'rb') as file: s = file.read() print(repr(s)[:60]) u = s.decode('ascii') # this line should raise an error # if there are bytes outside ascii

检查Python版本以确保它是2.7（正确解释错误消息）：
```
 $ python -V 
```
检查文件是否使用utf-16/32编码保存（@abarnert在注释中的建议）。

在这种情况下，您应该在repr()结果中看到很多零字节'\x00' 。