Ok so here's my code:

```
tick = 1
week = 1
month = 1
year = 1

def new_week(week, tick):
    week = week + 1
    tick = tick + 1
    if tick == 4:
        new_month()
        tick = 1

new_week(week, tick)
print week, tick
new_week(week, tick)
print week, tick

```

No matter how many subsequent times I tell it to run the new\_week() function and print the values for 'week' and 'tick', it always prints 1 for both... Why is it disregarding the 'week = week + 1' line and the same for 'tick'??

I'm running Python 2.7 btw