keep getting this out come "free variable 'valid_passport' referenced before assignment in enclosing scope" please help out

Question

def valid_passport(pp):

requirements = {"pid", "hgt", "cid", "iyr","byr","eyr","ecl","hcl", "ecl"} # Inputs all required keys into a list

return all(field in pp for field in requirements) or \

all(field in pp for field in requirements -{'ecl'}) # since the eye color is irrelevant, we define that here

def main():

pp_info = input("Enter the name of the file: ")

with open(pp_info, 'r') as file: # opens, reads and assigns the provided file

passports = file.read().split("\n\n") # correctly reads each passport information, acknowledging that each bit of information is separated by 2 blank lines

valid_passports = [pp for pp in passports if valid_passport(pp)]

print(f"There are {len(valid_passports)} valid passports")

with open(valid_passports.txt, 'w') as valid_file: # creates a new file with the intention of adding the information of the valid passports

for valid_passport in valid_passports:

valid_file.write(valid_passport + "\n\n") # inputs all the information of each valid passport, and separates them by 2 blank lines

if __name__ == "__main__":

main()

Answer 1

Hi, it looks like your issue is that you have a valid_passport variable created in your last for loop as well as a valid_passport function. When call the function near the top of main, it thinks your are trying to reference the variable down below. Simplest fix would be to change the variable name in your final for loop to something other than valid_passport.

Hope this helps!