Oleg Kleshchunov LowerDeez

## after_fetch_queryset_mixin.py
class AfterFetchQuerySetMixin:
    """
    QuerySet mixin to enable functions to run immediately
    after records have been fetched from the DB.
    """
    # This is most useful for registering 'prefetch_related' like operations
    # or complex aggregations that need to be run after fetching, but while
    # still allowing chaining of other QuerySet methods.
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

## number_str_to_float.py
from fractions import Fraction

def number_str_to_float(amount_str:str) -> (any, bool):
    """
    Take in an amount string to return float (if possible).

    Valid string returns:
    Float
    Boolean -> True

## custom_django_checks.py
"""
Custom django checks.

    H001: Field has no verbose name.
    H002: Verbose name should use gettext.
    H003: Words in verbose name must be all upper case or all lower case.
    H004: Help text should use gettext.
    H005: Model must define class Meta.
    H006: Model has no verbose name.
    H007: Model has no verbose name plural.

## django_change_translation_fallback_language.py
# This is a hack so that French translation falls back to English translation,
# not German translation (which is the default locale and the original
# strings).
from django.utils.translation import trans_real


class MyDjangoTranslation(trans_real.DjangoTranslation):
    def _add_fallback(self, localedirs=None):
        if self._DjangoTranslation__language[:2] in {'de', 'en'}:
            return super()._add_fallback(localedirs)

## sha256-hmac.md

      
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                LowerDeez
                / sha256-hmac.md
            
            
              Created
              March 5, 2021 15:03
                — forked from jasny/sha256-hmac.md
            
              
                Hashing examples in different languages
              
          
    Example inputs:


Variable
Value


key
the shared secret key here


message
the message to hash here


Reference outputs for example inputs above:
| Type | Hash |

  
## middleware.py
# https://gist.github.com/1035190
# See also: Snippets 85, 240, 880 at http://www.djangosnippets.org/
#
# Minimally, the following settings are required:
#
#     SSL_ENABLED = True
#     SSL_URLS = (
#        r'^/some/pattern/',
#     )

## attrdict.py
#!/usr/bin/env python
# coding: utf-8

class AttrDict(object):
    def __init__(self, init=None):
        if init is not None:
            self.__dict__.update(init)

    def __getitem__(self, key):
        return self.__dict__[key]

## convert_key.sh
sudo apt-get install putty-tools

# Place your keys in some directory, e.g. your home folder. Now convert the PPK keys to SSH keypairs:cache search

# To generate the private key:
puttygen your_private_key.ppk -O private-openssh -o your_new_key
chmod 600 your_new_key

# Move these keys to ~/.ssh and make sure the permissions are set to private for your private key:
mkdir -p ~/.ssh

## create_sha256_signature.py
"""
https://gist.github.com/Azadehkhojandi/50eaae4cf20b21faef186f2c8ee97873
"""

import hmac
import hashlib
import binascii


# 1

## django_absolute_sum.py
from django.db.models import Sum


class AbsoluteSum(Sum):
    name = 'AbsoluteSum'
    template = '%(function)s(%(absolute)s(%(expressions)s))'

    def __init__(self, expression, **extra):
        super(AbsoluteSum, self).__init__(
            expression, absolute='ABS ', output_field=IntegerField(), **extra)
	class AfterFetchQuerySetMixin:
	"""
	QuerySet mixin to enable functions to run immediately
	after records have been fetched from the DB.
	"""
	# This is most useful for registering 'prefetch_related' like operations
	# or complex aggregations that need to be run after fetching, but while
	# still allowing chaining of other QuerySet methods.
	def __init__(self, args, *kwargs):
	super().__init__(args, *kwargs)
	from fractions import Fraction

	def number_str_to_float(amount_str:str) -> (any, bool):
	"""
	Take in an amount string to return float (if possible).

	Valid string returns:
	Float
	Boolean -> True
	"""
	Custom django checks.

	H001: Field has no verbose name.
	H002: Verbose name should use gettext.
	H003: Words in verbose name must be all upper case or all lower case.
	H004: Help text should use gettext.
	H005: Model must define class Meta.
	H006: Model has no verbose name.
	H007: Model has no verbose name plural.
	# This is a hack so that French translation falls back to English translation,
	# not German translation (which is the default locale and the original
	# strings).
	from django.utils.translation import trans_real


	class MyDjangoTranslation(trans_real.DjangoTranslation):
	def _add_fallback(self, localedirs=None):
	if self._DjangoTranslation__language[:2] in {'de', 'en'}:
	return super()._add_fallback(localedirs)
Variable	Value
key	`the shared secret key here`
message	`the message to hash here`
	# https://gist.github.com/1035190
	# See also: Snippets 85, 240, 880 at http://www.djangosnippets.org/
	#
	# Minimally, the following settings are required:
	#
	# SSL_ENABLED = True
	# SSL_URLS = (
	# r'^/some/pattern/',
	# )
	#!/usr/bin/env python
	# coding: utf-8

	class AttrDict(object):
	def __init__(self, init=None):
	if init is not None:
	self.__dict__.update(init)

	def __getitem__(self, key):
	return self.__dict__[key]
	sudo apt-get install putty-tools

	# Place your keys in some directory, e.g. your home folder. Now convert the PPK keys to SSH keypairs:cache search

	# To generate the private key:
	puttygen your_private_key.ppk -O private-openssh -o your_new_key
	chmod 600 your_new_key

	# Move these keys to ~/.ssh and make sure the permissions are set to private for your private key:
	mkdir -p ~/.ssh
	"""
	https://gist.github.com/Azadehkhojandi/50eaae4cf20b21faef186f2c8ee97873
	"""

	import hmac
	import hashlib
	import binascii


	# 1
	from django.db.models import Sum


	class AbsoluteSum(Sum):
	name = 'AbsoluteSum'
	template = '%(function)s(%(absolute)s(%(expressions)s))'

	def __init__(self, expression, **extra):
	super(AbsoluteSum, self).__init__(
	expression, absolute='ABS ', output_field=IntegerField(), **extra)