python设置utf8编码,python可以编码为utf-8，但无法解码

The Code Below Can Encode A String To Utf-8 :

#!/usr/bin/python

# -*- coding: utf-8 -*-

str = 'ورود'

print(str.encode('utf-8'))

That Prints:

b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

But I can't Decode This String With This Code :

#!/usr/bin/python

# -*- coding: utf-8 -*-

str = b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

print(str.decode('utf-8'))

The error is:

Traceback (most recent call last):

File "C:\test.py", line 5, in

print(str.decode('utf-8'))

AttributeError: 'str' object has no attribute 'decode'

Please Help Me ...

Edit

From the answers switched to a byte string:

#!/usr/bin/python

# -*- coding: utf-8 -*-

str = b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

print(str.decode('utf-8'))

Now the error is:

Traceback (most recent call last):

File "C:\test.py", line 5, in

print(str.decode('utf-8'))

File "C:\Python34\lib\encodings\cp437.py", line 19, in encode

return codecs.charmap_encode(input,self.errors,encoding_map)[0]

UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-3: character maps to

解决方案

It looks like you're using Python 3.X. You .encode() Unicode strings (u'xxx' or 'xxx'). You .decode() byte strings b'xxxx'.

#!/usr/bin/python

# -*- coding: utf-8 -*-

s = b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

# ^

# Need a 'b'

#

print(s.decode('utf-8'))

Note your terminal may not be able to display the Unicode string. Mine Windows console doesn't:

Python 3.3.5 (v3.3.5:62cf4e77f785, Mar 9 2014, 10:35:05) [MSC v.1600 64 bit (AMD64)] on win32

Type "help", "copyright", "credits" or "license" for more information.

>>> s = b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

>>> # ^

... # Need a 'b'

... #

... print(s.decode('utf-8'))

Traceback (most recent call last):

File "", line 4, in

File "D:\dev\Python33x64\lib\encodings\cp437.py", line 19, in encode

return codecs.charmap_encode(input,self.errors,encoding_map)[0]

UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-3: character maps to

But it does do the decode. '\uxxxx' represents a Unicode code point.

>>> s.decode('utf-8')

'\u0648\u0631\u0648\u062f'

My PythonWin IDE supports UTF-8 and can display the characters:

>>> s = b'\xd9\x88\xd8\xb1\xd9\x88\xd8\xaf'

>>> print(s.decode('utf-8'))

ورود

You can also write the data to a file and display it in an editor that supports UTF-8, like Notepad. since your original string is already UTF-8, just write it to a file directly as bytes. 'wb' opens the file in binary mode and the bytes are written as is:

>>> with open('out.txt','wb') as f:

... f.write(s)

If you have a Unicode string, you can write it as UTF-8 with:

>>> with open('out.txt','w',encoding='utf8') as f:

... f.write(u) # assuming "u" is already a decoded Unicode string.

P.S. str is a built-in type. Don't use it for variable names.

Python 2.x works differently. 'xxxx' is a byte string and u'xxxx' is a Unicode string, but you still .encode() the Unicode string and .decode() the byte string.