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Unable to configure handler 'console': __init__() got an unexpected keyword argument 'strm'

Django and upgraded from 2.6 to Python 2.7

Hopefuly this quick post will save someone time, I recently upgraded our Debian servers from stable (squeeze) to testing (wheezy).

Unfortunately this resulted in an odd error:

Traceback (most recent call last):
  File "", line 12, in 
  File "/srv/www/django/", line 453, in execute_from_command_line
  File "/srv/www/django/", line 392, in execute
  File "/srv/www/django/", line 263, in fetch_command
    app_name = get_commands()[subcommand]
  File "/srv/www/django/", line 109, in get_commands
    apps = settings.INSTALLED_APPS
  File "/srv/www/django/", line 53, in __getattr__
  File "/srv/www/django/", line 49, in _setup
  File "/srv/www/django/", line 84, in _configure_logging
  File "/usr/lib/python2.7/logging/", line 777, in dictConfig
  File "/usr/lib/python2.7/logging/", line 575, in configure
    '%r: %s' % (name, e))
ValueError: Unable to configure handler 'console': __init__() got an unexpected keyword argument 'strm'

The solution is relatively simple but not easily foundable in Google or Bing. The logging definition in needs to be updated to use the new Python 2.7 'stream' keyword argument instead of 'strm'. My updated default project logging settings below:

 'version': 1,
 'disable_existing_loggers': True,
 'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
 'formatters': {
  'verbose': {
   'format': '%(levelname)s %(name)s %(asctime)s %(module)s %(process)d %(thread)d %(pathname)s@%(lineno)s: %(message)s'
  'simple': {
   'format': '%(levelname)s %(name)s %(filename)s@%(lineno)s: %(message)s'
  # let the 'handlers' get all messages and filter level in 'loggers'
 'handlers': {
  'null': {
   'formatter': 'simple',
   'stream': sys.stderr,
   # 'stream': sys.stdout
   # see
  'mail_admins': {
   #'level': 'ERROR',
   'filters': ['require_debug_false'],
   'class': 'django.utils.log.AdminEmailHandler',
   'formatter': 'verbose'
 'loggers': {
  # catch all logger ex. any logger = logging.getLogger(__name__)
  '': { 
   'handlers': ['mail_admins', 'console'],
   'level': 'WARNING',

As always if you found this useful feel free to follow me here or via twitter @danielsokolowski.


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