bmispelon

"""
When a model field defines a `choices` attribute, Django doesn't actually
generate a database constraint for that, which means it's possible to insert
data that doesn't match the choices.
See https://adamj.eu/tech/2020/01/22/djangos-field-choices-dont-constrain-your-data/

This command scans your database to try and find which fields have mismatched
data.

By default it scans all fields of all models of all installed apps, doing one

bmispelon

import random
from enum import Enum, EnumMeta, IntEnum


class GoatEnumMeta(EnumMeta):
    def __getitem__(cls, item):
        if isinstance(item, int):
            item = cls._member_names_[item]
        return super().__getitem__(item)

bmispelon

def my_tuple_function(t):
    """
    Return a new tuple of the same length containing only zeroes.
    """
    tuple_class = type(t)

    return tuple_class(*(0 for _ in t))  # works for namedtuple
    return tuple_class((0 for _ in t))  # works for plain tuple

bmispelon

# https://mobile.twitter.com/dabeaz/status/1199367834691932160
"""
As a oneliner:


    ᚐ = type('ᚐ',(object,),{'ᚐ':{},'__getattr__':lambda s,a:s.ᚐ[a],'__setattr__':lambda s,a,v:s.ᚐ.__setitem__(a,s.ᚐ[a]+v)if a in s.ᚐ else s.ᚐ.__setitem__(a,v)})()

    for ᚐ.i, ᚐ.s in [(600, 'sa'), (60, 'ta'), (6, 'n')]:
        pass

bmispelon

import argparse
from functools import partial
import unicodedata

# based on https://www.fileformat.info/info/unicode/category/Nd/list.htm
ALPHABETS = {
    'ARABIC-INDIC',
    'EXTENDED ARABIC-INDIC',
    'NKO',
    'DEVANAGARI',

bmispelon

class MyClass:
    ｍｙ_ａｔｔｒ = 42

print(MyClass.my_attr)
print(MyClass.ｍｙ_ａｔｔｒ)
print(getattr(MyClass, 'my_attr'))
print(getattr(MyClass, 'ｍｙ_ａｔｔｒ'))

bmispelon

03000000-1
03100000-2
03110000-5
03111000-2
03111100-3
03111200-4
03111300-5
03111400-6
03111500-7
03111600-8

bmispelon

from django.forms.widgets import MultiWidget

def form_to_POST(form):
    """
    Given a form, convert its initial data into a dict that can simulate
    the request.POST that would be generated if that form was submitted as-is.

    This will respect the form's prefix and will convert all field values to
    strings.
    """

bmispelon

Python 2.7.3 (default, Mar 13 2014, 11:03:55) 
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from django.core.mail import send_mail
>>> send_mail('hello', 'world', '[email protected]', [u'Báptiste [asdf] <[email protected]>'])
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/path/to/venv/local/lib/python2.7/site-packages/django/core/mail/__init__.py", line 62, in send_mail
    return mail.send()

bmispelon

"""
ValueError: not enough values to unpack (expected 3, got 2)
ValueError: too many values to unpack (expected 3)
"""

def unpack(iterable, length):
    i = iter(iterable)

    ret = [x for x, _ in zip(i, range(length))]