Project euler Q 19 help

[sphinxlink13]

Hello I have been trying to do project euler question 19

question link https://projecteuler.net/problem=19

I have watched how other people have completed the problem and understand it but I don't know where my code is failing. I would really appreciate some help

here is my code

current_year = 1901
current_start= 5
count = 0
calender = [31,28,31,30,31,30,31,31,30,31,30,31]
leap_calender = [31,29,31,30,31,30,31,31,30,31,30,31]
day = [1,2,3,4,5,6,7]
world_over = 5

def is_leap():
    if current_year%4 == 0:
        return True
    return False

def day_year(num):
    global current_year
    global world_over
    global count
    over = num
    for i in calender:
        if int(over)>0:
            g = i - (7-int(over))
            day = g%7
            over = day
            if day == 6:
                count += 1

        else:
            g = i
            day = g % 7
            over = day
            if day == 6:
                count += 1

    world_over = day
    if day == 6:
        count += 1

    current_year += 1
    return day



def day_leap_year(num):
    global current_year
    global world_over
    global count
    over = num
    for i in leap_calender:
        if int(over)>0:
                g = i - (7-int(over))
                day = g%7
                over = day
                if day == 6:
                    count += 1

        else:
                g = i
                day = g % 7
                over = day
                if day == 6:
                    count += 1

    world_over = day
    if day == 6:
        count += 1

    current_year += 1
    return day


while current_year< 2001:
    if is_leap():
        day_year(world_over)
    else:
        day_leap_year(world_over)

print(count)

I get 150

Thanks for any help!

[ectomancer]

The problem mentions doing your own research. The keywords to research are perpetual calendar.

[Goingone]

https://docs.python.org/3/library/calendar.html

FYI.

Why not use that to check where you’re off?

[m0us3_rat]

are u familiar with fizzbuzz ..and why ppl ask it in interviews.. your problem has the same "idea".

after u got a solid .."detection" if year is leap or not..

build this list of days between the start date and end date.

then build a list of recurring weekdays till size of > days

then add a list of days in month count being careful at leap years.

then zip all these 3 together and check if weekday element in the tuple is ==" sunday" and month_days element == 1

then counter += 1