For bills and stuff

bills.py

#!/usr/bin/env python

def calc(gross, delivery, d):
    """
    usage:
    >>> calc(120, 9, {
            'Ashraf': 40,
            'Thabet': 20,
            'Awadi': 20,
            'Ghanem': 20,
            })
    net: 100
    Ghanem: 24.5
    Thabet: 24.5
    Ashraf: 46.5
    Awadi: 24.5
    total: 120.0
    """
    s = sum(map(lambda (x, y): y, d.items()))
    a2 = [(name, (lambda x:int(x) + [0,0.5,0.5,1][int(4 * (x % 1))])(i * 1.0 * (gross - delivery) / s + 1.0 * delivery / len(d))) for (name, i) in d.items()]
    print("net: %s"%(s))
    print('\n'.join(map(lambda (x, y): '%s: %s'%(x, y), a2)))
    print('total: %s'%sum(map(lambda (x, y):y, a2)))

Updated to use keyword arguments instead, it won't accept duplicated entries as passing a dict, and of course less typing 😆
https://gist.github.com/abom/db0f8c66782ee91939226b80a6a1397d

I was wondering what is wrong, at the end it was a duplicated dict item.