File "/usr/local/lib/python2.7/site-packages/django_slack/api.py", line 86
    "URL is not specified"
    ^
IndentationError: unexpected indent

Traceback (most recent call last):
  File "./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
    utility.execute()
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django/core/management/__init__.py", line 312, in execute
    django.setup()
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django/__init__.py", line 18, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django/apps/registry.py", line 85, in populate
    app_config = AppConfig.create(entry)
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django/apps/config.py", line 86, in create
    module = import_module(entry)
  File "/home/ttn-dev/.venv/lib/python3.4/importlib/__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django_slack/__init__.py", line 244, in <module>
    from .api import slack_message
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django_slack/api.py", line 10, in <module>
    backend = from_dotted_path(app_settings.BACKEND)()
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django_slack/utils.py", line 16, in from_dotted_path
    return getattr(__import__(module, {}, {}, (attr,)), attr)
  File "/home/ttn-dev/.venv/lib/python3.4/site-packages/django_slack/backends.py", line 27
    print "I: Slack message:"
                            ^
SyntaxError: Missing parentheses in call to 'print'

[...]
    'handlers': {
        'slack': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django_slack.log.SlackExceptionHandler',
        },
     },
     'loggers': {
        'django.security.DisallowedHost': {
            'handlers': ['slack'],
            'propagate': False,
           'level': 'ERROR',
        },
}
[...]

[...]
django.core.exceptions.DisallowedHost: Invalid HTTP_HOST header: 'localhost'. You may need to add 'localhost' to ALLOWED_HOSTS.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.4/wsgiref/handlers.py", line 137, in run
    self.result = application(self.environ, self.start_response)
  File "/virtualenv/lib/python3.4/site-packages/whitenoise/base.py", line 119, in __call__
    return self.application(environ, start_response)
  File "/virtualenv/lib/python3.4/site-packages/django/core/handlers/wsgi.py", line 189, in __call__
    response = self.get_response(request)
  File "/virtualenv/lib/python3.4/site-packages/django/core/handlers/base.py", line 204, in get_response
    'request': request
  File "/usr/lib/python3.4/logging/__init__.py", line 1303, in error
    self._log(ERROR, msg, args, **kwargs)
  File "/usr/lib/python3.4/logging/__init__.py", line 1409, in _log
    self.handle(record)
  File "/usr/lib/python3.4/logging/__init__.py", line 1419, in handle
    self.callHandlers(record)
  File "/usr/lib/python3.4/logging/__init__.py", line 1481, in callHandlers
    hdlr.handle(record)
  File "/usr/lib/python3.4/logging/__init__.py", line 853, in handle
    self.emit(record)
  File "/virtualenv/lib/python3.4/site-packages/django_slack/log.py", line 53, in emit
    reporter.get_traceback_text(),
  File "/virtualenv/lib/python3.4/site-packages/django/views/debug.py", line 390, in get_traceback_text
    return t.render(c)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 209, in render
    return self._render(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 201, in _render
    return self.nodelist.render(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 903, in render
    bit = self.render_node(node, context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/debug.py", line 79, in render_node
    return node.render(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/defaulttags.py", line 329, in render
    return nodelist.render(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 903, in render
    bit = self.render_node(node, context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/debug.py", line 79, in render_node
    return node.render(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/debug.py", line 89, in render
    output = self.filter_expression.resolve(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 647, in resolve
    obj = self.var.resolve(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 787, in resolve
    value = self._resolve_lookup(context)
  File "/virtualenv/lib/python3.4/site-packages/django/template/base.py", line 847, in _resolve_lookup
    current = current()
  File "/virtualenv/lib/python3.4/site-packages/django/http/request.py", line 151, in build_absolute_uri
    host=self.get_host(),
  File "/virtualenv/lib/python3.4/site-packages/django/http/request.py", line 101, in get_host
    raise DisallowedHost(msg)
django.core.exceptions.DisallowedHost: Invalid HTTP_HOST header

TypeError
'Loader' object is not iterable
/Users/tanner/.local/share/virtualenvs/cribbing-check-N6-Q5UUH/lib/python3.8/site-packages/django/template/context.py, line 244, in bind_template
/Users/tanner/.local/share/virtualenvs/cribbing-check-N6-Q5UUH/bin/python
3.8.5

  File "...../handlers.py", line 61, in request_arrived
    }, channel='userrequest', username='vdpo')
  File "...../e/lib/python3.6/site-packages/django_slack/api.py", line 76, in slack_message
    django_slack='django_slack/{}'.format(k),
  File ".....//lib/python3.6/site-packages/django/template/loader.py", line 61, in render_to_string
    template = get_template(template_name, using=using)
  File ".....//lib/python3.6/site-packages/django/template/loader.py", line 15, in get_template
    return engine.get_template(template_name)
  File "...../e/lib/python3.6/site-packages/django/template/loaders/base.py", line 24, in get_template
    contents = self.get_contents(origin)
  File ".....//lib/python3.6/site-packages/django/template/loaders/filesystem.py", line 23, in get_contents
    with open(origin.name, encoding=self.engine.file_charset) as fp:
AttributeError: 'dict' object has no attribute 'file_charset'

{% extends django_slack %}

{% block text %}
Message text here: {{ foo }}
{% endblock %}

 slack_message('message.slack', {
            'foo': 'hello',
}, channel='bottest', username='mybot')

class TestBackend(Backend):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.reset_messages()

    def send(self, url, data, **kwargs):
        self.messages.append(data)

    def reset_messages(self):
        self.messages = []

    def retrieve_messages(self):
        messages = self.messages
        self.reset_messages()
        return messages

SLACK_TOKEN='[my toket is here]'
SLACK_CHANNEL='#logs-info'
SLACK_USERNAME='django-logger'
SLACK_FAIL_SILENTLY=False

    'loggers': {
        'django.request': {
            'handlers': ['console'],
            'level': 'ERROR',
            'propagate': False,
        },
        'docnavapp': {
            'handlers': ['console', 'slack_admins'],
            'level': 'DEBUG',
            'propagate': False
        }
    },
    'handlers': {
        'console':{
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'filters': ['request_id'],
            'formatter': 'standard'
        },
        'slack_admins': {
            'level': 'DEBUG',
            # 'filters': ['require_debug_false'],
            'filters': [],
            'class': 'django_slack.log.SlackExceptionHandler',
        },
        'mail_admins': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django.utils.log.AdminEmailHandler'
        }

    }

./manage.py shell

import logging
logger = logging.getLogger("docnavapp")
logger.debug('Testing message')

$ pip freeze | grep slack
$ pip install django-slack
Downloading/unpacking django-slack
Downloading django-slack-0.0.1.tar.gz
...
Installing collected packages: django-slack
  Running setup.py install for django-slack
Successfully installed django-slack
Cleaning up...
$ pip freeze | grep slack
django-slack==0.0.1

File "/usr/local/lib/python3.5/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python3.5/site-packages/django/contrib/admin/options.py" in wrapper
  618.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/utils/decorators.py" in _wrapped_view
  110.                     response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  57.         response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/contrib/admin/sites.py" in inner
  233.             return view(request, *args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/contrib/admin/options.py" in change_view
  1521.         return self.changeform_view(request, object_id, form_url, extra_context)
File "/usr/local/lib/python3.5/site-packages/django/utils/decorators.py" in _wrapper
  34.             return bound_func(*args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/utils/decorators.py" in _wrapped_view
  110.                     response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django/utils/decorators.py" in bound_func
  30.                 return func.__get__(self, type(self))(*args2, **kwargs2)
File "/usr/local/lib/python3.5/contextlib.py" in inner
  30.                 return func(*args, **kwds)
File "/usr/local/lib/python3.5/site-packages/django/contrib/admin/options.py" in changeform_view
  1469.                 self.save_model(request, new_object, form, not add)
File "/app/hq/admin/event.py" in save_model
  58.             'change': change,
File "/usr/local/lib/python3.5/site-packages/django_slack/api.py" in slack_message
  114.         backend.send(endpoint_url, data, **kwargs)
File "/usr/local/lib/python3.5/site-packages/django_slack/backends.py" in send
  65.         self._send.delay(*args, **kwargs)
File "/usr/local/lib/python3.5/site-packages/celery/app/task.py" in delay
  453.         return self.apply_async(args, kwargs)
File "/usr/local/lib/python3.5/site-packages/celery/app/task.py" in apply_async
  565.             **dict(self._get_exec_options(), **options)
File "/usr/local/lib/python3.5/site-packages/celery/app/base.py" in send_task
  354.                 reply_to=reply_to or self.oid, **options
File "/usr/local/lib/python3.5/site-packages/celery/app/amqp.py" in publish_task
  310.             **kwargs
File "/usr/local/lib/python3.5/site-packages/kombu/messaging.py" in publish
  165.             compression, headers)
File "/usr/local/lib/python3.5/site-packages/kombu/messaging.py" in _prepare
  241.              body) = dumps(body, serializer=serializer)
File "/usr/local/lib/python3.5/site-packages/kombu/serialization.py" in dumps
  164.             payload = encoder(data)
File "/usr/local/lib/python3.5/contextlib.py" in __exit__
  77.                 self.gen.throw(type, value, traceback)
File "/usr/local/lib/python3.5/site-packages/kombu/serialization.py" in _reraise_errors
  59.         reraise(wrapper, wrapper(exc), sys.exc_info()[2])
File "/usr/local/lib/python3.5/site-packages/kombu/five.py" in reraise
  131.             raise value.with_traceback(tb)
File "/usr/local/lib/python3.5/site-packages/kombu/serialization.py" in _reraise_errors
  55.         yield
File "/usr/local/lib/python3.5/site-packages/kombu/serialization.py" in dumps
  164.             payload = encoder(data)
File "/usr/local/lib/python3.5/site-packages/anyjson/__init__.py" in dumps
  141.         return implementation.dumps(value)
File "/usr/local/lib/python3.5/site-packages/anyjson/__init__.py" in dumps
  89.             raise TypeError(TypeError(*exc.args)).with_traceback(sys.exc_info()[2])
File "/usr/local/lib/python3.5/site-packages/anyjson/__init__.py" in dumps
  87.             return self._encode(data)
File "/usr/local/lib/python3.5/json/__init__.py" in dumps
  230.         return _default_encoder.encode(obj)
File "/usr/local/lib/python3.5/json/encoder.py" in encode
  198.         chunks = self.iterencode(o, _one_shot=True)
File "/usr/local/lib/python3.5/json/encoder.py" in iterencode
  256.         return _iterencode(o, 0)
File "/usr/local/lib/python3.5/json/encoder.py" in default
  179.         raise TypeError(repr(o) + " is not JSON serializable")

Exception Type: EncodeError at /core/event/1/
Exception Value: b'Hello world' is not JSON serializable

self._send.delay(*args, **kwargs):

('https://slack.com/api/chat.postMessage',
 {'channel': '#general',
  'text': b'Hello world',
  'token': 'xoxp-xxx',
  'username': 'xxx'})