Advent of Code 2019 #2 solution

2.py

with open('1_input.txt', 'r') as f:
    input_data = f.readlines()
def fuel_requirement(mass):
    fuel_needed = (mass / 3) - 2
    if fuel_needed > 0:
         return fuel_needed + fuel_requirement(fuel_needed)
    else:
        return 0
print(fuel_requirement(14))
print(fuel_requirement(1969))
print(fuel_requirement(100756))
fuel_sum = 0
for module_mass in input_data:
    fuel_sum += fuel_requirement(int(module_mass))
print(fuel_sum)