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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
<!DOCTYPE html> <html lang="en"> <head></head> <body>some</body> </html> 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 <module> 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 <module> from google.appengine.tools import dev_appserver File "c:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 140, in <module> 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:
===== video/x-ms-wvx ===== video/x-msvideo ===== рєфшю/AMR Traceback (most recent call last): In the registry HKCR/Mime/Database/ContentType/ I have five keys with russian (cyrilic) letters. But how can I fix this error?
666
The UnicodeDecodeError normally happens when decoding an str string from a certain coding. Since codings map only a limited number of str strings to unicode characters, an illegal sequence of str characters will cause the coding-specific decode() to fail.
For characters represented by the 7-bit ASCII character codes, the UTF-8 representation is exactly equivalent to ASCII, allowing transparent round trip migration. Other Unicode characters are represented in UTF-8 by sequences of up to 6 bytes, though most Western European characters require only 2 bytes3.
This is a bug in mimetypes, triggered by bad data in the registry. (рєфшю/AMR 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 .encode it fails with a UnicodeDecodeError trying to get a Unicode string before encoding it back to ASCII!
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.
93
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/.
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