Code snippets I think are cool, but frowned upon or difficult to understand

slick_code

import numpy as np
1/(0 or np.nan) # Avoid ZeroDivisionError

def get_odds(bet, profit):
    _ = lambda x: x + min(-(x % 5), 5 - (x % 5), key=abs)
    return round(_(100*(max(profit, bet) / min(bet, -profit, key=abs))))

assert get_odds(1, 1.25) == 125
assert get_odds(1, 1.32) == 130
assert get_odds(1, 0.8) == -125
assert get_odds(1, 0.91) == -110
assert get_odds(3.40, 5.91) == 175
assert get_odds(2.43, 1.28) == -190