sprin

"""
A template tag for Django templates which does not allow
non-existent variable errors to fail silently.
Only works for simple lookups, where the variable is
a key in the context.
"""
from django import template

register = template.Library()

sprin

"""
Unroll a nested dictionary into flat lists.

This might come in handy if you have on your hands a massive, hardcoded,
vertical- and horizontal-screen-spanning lookup map, and you would like to get
it into a tabular format, so you can, for example, load it into a relational
database table.
"""
import sys
import csv

sprin

"""
Functions for pretty-printing dictionary differences, including an
assert function for testing purposes.

Under MIT License from sprin. (https://gist.github.com/sprin/6034947/)

Example:

a = {
    'key1': 'val1',

sprin

"""
A demo of creating a new database via SQL Alchemy.

Under MIT License from sprin (https://gist.github.com/sprin/5846464/)

This module takes the form of a nosetest with three steps:
    - Set up the new database.
    - Create a table in the new database.
    - Teardown the new database.
"""

sprin

class CharFieldNoEmptyString(CharField):
    def get_prep_value(self, value):
        # Cast empty strings to null before saving to the DB.
        value = (
            super(CharFieldNoEmptyString, self)
            .get_prep_value(value)
        )
        return value or None