问题:

On one of my machines I have the error when I am working with google apps engine or django.

For example:

app.yaml

application: demas1252c version: 1 runtime: python api_version: 1   handlers:    - url: /images static_dir: images    - url: /css static_dir: css    - url: /js static_dir: js    - url: /.* script: demas1252c.py

demas1252c.py

import cgi import wsgiref.handlers   from google.appengine.ext.webapp import template from google.appengine.ext import webapp   class MainPage(webapp.RequestHandler):  def get(self): values = {'id' : 10}   self.response.out.write(template.render('foto.html', values))   application = webapp.WSGIApplication([('/', MainPage)], debug = True) wsgiref.handlers.CGIHandler().run(application)

foto.html
```
       some 
```

error message:

C:\artefacts\dev\project>"c:\Program Files\Google\google_appengine\dev_appserver.py" foto-hosting Traceback (most recent call last):   File "c:\Program Files\Google\google_appengine\dev_appserver.py", line 69, in      run_file(__file__, globals())   File "c:\Program Files\Google\google_appengine\dev_appserver.py", line 65, in run_file     execfile(script_path, globals_)   File "c:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_main.py", line 92, in      from google.appengine.tools import dev_appserver   File "c:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 140, in      mimetypes.add_type(mime_type, '.' + ext)   File "C:\Python27\lib\mimetypes.py", line 344, in add_type     init()   File "C:\Python27\lib\mimetypes.py", line 355, in init     db.read_windows_registry()   File "C:\Python27\lib\mimetypes.py", line 260, in read_windows_registry     for ctype in enum_types(mimedb):   File "C:\Python27\lib\mimetypes.py", line 250, in enum_types     ctype = ctype.encode(default_encoding) # omit in 3.x! UnicodeDecodeError: 'ascii' codec can't decode byte 0xe0 in position 0: ordinal not in range(128)

When I am working with static files in django (without gae) I have very similar error (with different stack).

I tried to find the reason of error and added code to mimetypes.py:

print '=====' print ctype ctype = ctype.encode(default_encoding) # omit in 3.x!

Then I get next messages in my console:

In the registry HKCR/Mime/Database/ContentType/ I have five keys with russian (cyrilic) letters. But how can I fix this error?

回答1:

This is a bug in mimetypes, triggered by bad data in the registry. ( is not at all a valid MIME media type.)

ctype is a registry key name returned by _winreg.EnumKey, which mimetypes is expecting to be a Unicode string, but it isn't. Unlike _winreg.QueryValueEx, EnumKey returns a byte string (direct from the ANSI version of the Windows API; _winreg in Python 2 doesn't use the Unicode interfaces even though it returns Unicode strings, so it'll never read non-ANSI characters correctly).

So the attempt to .encodeDecode

try:     ctype = ctype.encode(default_encoding) # omit in 3.x! except UnicodeEncodeError:     pass

These lines in mimetypes should simply be removed.

ETA: added to bug tracker.

回答2:

By the way, the main culpit of the problem is QuickTime which adds non-ascii mime types to the windows registry. The easiest way to fix it is to manually find and remove from the registry the subsections of the HKCR/Mime/Database/ContentType/ starting with аудио/ and видео/.

回答3:

There is a patch:

http://bugs.python.org/file18143/9291.patch

Works great for me.

Just replace UnicodeEncodeError to be UnicodeError

回答4:

An alternative solution from python issue9291 by Alexandr Zarubkin (me21):

add file named sitecustomize.py in Lib\site-packages folder.

import sys sys.setdefaultencoding("cp1251")

回答5:

its a python bug with latin MIME tipes in registry start regedit and inspect "HKEY_CLASSES_ROOT\MIME\Database\Content Type" for non-latin names.

转载请标明出处:UnicodeDecodeError : 'ascii' codec can't decode byte 0xe0 in position 0: ordinal not in range(128)

文章来源: UnicodeDecodeError : 'ascii' codec can't decode byte 0xe0 in position 0: ordinal not in range(128)

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