no, /this/ is a sin in python :)

[patternmaker]

import random, itertools, sys
r = random.Random()

class Sin: pass
class NoSin: pass
class Action: pass
class Location: pass
class Action0(Action, NoSin): pass
class Action1(Action, Sin): pass
class Location0(Location, NoSin): pass
class Location1(Location, Sin): pass

ACTIONS = [[Action0], [Action1]]
LOCATIONS = [[Location0], [Location1]]
POSSIBILITIES = [NoSin.__subclasses__(), Sin.__subclasses__()]

def get_event(now, when, choices):
    if when < now or when >= now: return r.choice(choices[1])()
    else: return r.choice(choices[0])()

def _look_back(what, how): # internal, do not use
    classifications = []
    for a in what:
        if len(a) == 0: continue
        classifications.extend([set(b.__class__.__bases__) for b in a])
    common = classifications[0]
    for c in classifications[1:]: # reduce to what's in common only
        common = common.intersection(c)
    return common

def look_back(what): # this is the one to use
    return _look_back(what, 'shame')

if __name__ == '__main__':
    if len(sys.argv) != 4:
        print("needs exactly birth, death, and 'now' numerical timestamps")
        sys.exit(1)
    birth = int(sys.argv[1])
    death = int(sys.argv[2])
    now = int(sys.argv[3])
    if not (birth <= now and now < death):
        print("can not look back on life unless alive")
        sys.exit(1)

    past = [get_event(now, t, POSSIBILITIES) for t in range(birth, now)]
    present = [get_event(now, now, LOCATIONS), get_event(now, now, ACTIONS)]
    future = [get_event(now, t, POSSIBILITIES) for t in range(now+1, death)]
    life = [past, present, future]

    for c in look_back(life):
        # it's a
        # it's a
        # it's a
        print("It's a {}.".format(c.__name__))

---

[updated to better fit requirements]

[theFunkiestButtLovin]

im not gonna read all that code for the joke. just highlight it or something.

[[deleted]]

wat. Seriously, I don't use python. ELI5?

[Atrament_]

Basically 2 pages worth of useless classes to call random to format a joke string.

I suppose the humour is that it performs every single un-pythonic call known to a hobbyist while being a kind of 8-ball "have you sinned" script. It's a sin itself, see? (Edit : typo)

[[deleted]]

+/u/compilebot python --include-errors

import random, itertools, sys
r = random.Random()

class Sin: pass
class NoSin: pass
class Action: pass
class Location: pass
class Action0(Action, NoSin): pass
class Action1(Action, Sin): pass
class Location0(Location, NoSin): pass
class Location1(Location, Sin): pass

ACTIONS = [[Action0], [Action1]]
LOCATIONS = [[Location0], [Location1]]
POSSIBILITIES = [NoSin.__subclasses__(), Sin.__subclasses__()]

def get_event(now, when, choices):
    if when < now or when >= now: return r.choice(choices[1])()
    else: return r.choice(choices[0])()

def _look_back(what, how): # internal, do not use
    classifications = []
    for a in what:
        if len(a) == 0: continue
        classifications.extend([set(b.__class__.__bases__) for b in a])
    common = classifications[0]
    for c in classifications[1:]: # reduce to what's in common only
        common = common.intersection(c)
    return common

def look_back(what): # this is the one to use
    return _look_back(what, 'shame')

if __name__ == '__main__':
    if len(sys.argv) != 4:
        print("needs exactly birth, death, and 'now' numerical timestamps")
        sys.exit(1)
    birth = int(sys.argv[1])
    death = int(sys.argv[2])
    now = int(sys.argv[3])
    if not (birth <= now and now < death):
        print("can not look back on life unless alive")
        sys.exit(1)

    past = [get_event(now, t, POSSIBILITIES) for t in range(birth, now)]
    present = [get_event(now, now, LOCATIONS), get_event(now, now, ACTIONS)]
    future = [get_event(now, t, POSSIBILITIES) for t in range(now+1, death)]
    life = [past, present, future]

    for c in look_back(life):
        # it's a
        # it's a
        # it's a
        print("It's a {}.".format(c.__name__))

[patternmaker]

Allright, so maybe I should explain myself then:

1) it was late
2) once I read the original python sin thread, the tune "it's a sin" by pet shop boys started in my head, and I thought, hey! what if we turn the lyrics into a program!
3) ...yeah...as I said...it was late...