在python中将特殊字符转换为原始形式

Question

Suppose i had a string for example

>>>  stri = "日本"
>>>  res = stri
>>>  res
'\xe6\x97\xa5\xe6\x9c\xac'

Now i want to convert the result in res back to the form in "日本" . How can i do this thanks in advacnce

Answer 1

(Assuming that you're using Python 2.x on a UTF-8 console):

Nothing has been converted, and there is no need to convert anything back; what you're seeing is the internal representation of the string. Try print ing it.

>>>  stri = "日本"
>>>  stri
'\xe6\x97\xa5\xe6\x9c\xac'
>>> print(stri)
日本

To clarify:

If you enter the name of a Python variable in the console, the console will print the repr of that variable. If you want to print the variable in human-readable form, use print instead. There is no difference in the way the variable is stored, therefore there's nothing to convert.

Answer 2

That is the expected behaviour - console doesn't print variable in unicode. If you actually print it out you'll see that the correct chars are still there. The console automatically uses repr on every variable before printing it out. You can verify that yourself by doing print(repr...)) like the example below:

>>> stri = "日本"
>>> stri
'\xe6\x97\xa5\xe6\x9c\xac'
>>> print stri
日本
>>> print repr(stri)
'\xe6\x97\xa5\xe6\x9c\xac'
>>> 

Answer 3

Like Tim said, the characters haven't been converted.

This article should help you understand what's happening