nvie

Keybase proof

I hereby claim:

• I am nvie on github.
• I am nvie (https://keybase.io/nvie) on keybase.
• I have a public key whose fingerprint is 9B5C 55F6 2651 625C C4EE 7C8F 4DAB 9440 5EA5 AAF0

To claim this, I am signing this object:

nvie

from contextlib import contextmanager
 
from django.conf import settings
from django.db import connection
 
 
@contextmanager
def no_queries_allowed():
    """This is a helper method that makes it easier during development, by
    throwing an exception when any queries are made within its block.  Using

nvie

from collections import deque
from functools import wraps


def inversify(predicate):
    """Returns a predicate that is the inverses of the given predicate."""
    @wraps(predicate)
    def _inner(*args, **kwargs):
        return not predicate(*args, **kwargs)
    return _inner

nvie

import jingo
from django_assets.env import get_env

jingo.env.assets_environment = get_env()

nvie

$ python minimal_example.py
Traceback (most recent call last):
  File "minimal_example.py", line 7, in <module>
    s.sign('foo')
  File "/Users/nvie/.virtualenvs/foo/lib/python2.7/site-packages/django/core/signing.py", line 175, in sign
    return str('%s%s%s') % (value, self.sep, self.signature(value))
  File "/Users/nvie/.virtualenvs/foo/lib/python2.7/site-packages/django/core/signing.py", line 169, in signature
    signature = base64_hmac(self.salt + 'signer', value, self.key)
  File "/Users/nvie/.virtualenvs/foo/lib/python2.7/site-packages/django/core/signing.py", line 75, in base64_hmac
    return b64_encode(salted_hmac(salt, value, key).digest())

nvie

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe7 in position 0: ordinal not in range(128)

Stacktrace (most recent call last):
  File "connect/helpers.py", line 47, in get
    resp.set_signed_cookie('foo', 'bar', max_age=600)
  File "django/http/response.py", line 188, in set_signed_cookie
    value = signing.get_cookie_signer(salt=key + salt).sign(value)
  File "django/core/signing.py", line 91, in get_cookie_signer
    return Signer('django.http.cookies' + settings.SECRET_KEY, salt=salt)

nvie

#!/bin/sh
ENV="$1"
shift 1

VIRTUAL_ENV="${WORKON_HOME}/${ENV}"
if [ ! -f "${VIRTUAL_ENV}/bin/python" ]; then
    echo "No virtualenv named '$ENV'."
    exit 2
fi

nvie

function p --description 'Start the best Python shell that is available'
  set -l cmd

    if test -f manage.py
        if pip freeze ^/dev/null | grep -q 'django-extensions'
            set cmd (which python) manage.py shell_plus
        else
            set cmd (which python) manage.py shell
        end
    else

nvie

# Alt 1: very explicit, but requires knowledge on what type of workers exist
from rq.workers.gevent import GeventWorker
w = GeventWorker(4)

# Alt 2: A bit like an "Abstract Factory", no need for knowing the implementing
# class names, backward compatible, and kind='forking' by default
from rq import Worker
w = Worker(4, kind='gevent')

# Alt 3: I don't think (2) works without really nasty tricks. This one is as

nvie

"""
Theres a gevent pool of 4 greenlets. Jobs are spawned continuously, blocking
until a free greenlet is available (default gevent.pool behaviour). Say,
a unit of work takes rougly a second. Then, at any moment, there are likely
4 jobs mid-execution.

The Goal
--------
I want to catch both SIGINT/KeyboardInterrupt _and_ SIGTERM in
the main loop, and in a nondestructive way.  By nondestructive, I mean (1)