Find dates in Pi decimals and check if their positions are prime or palindromprime

date_in_pi.py

#!/usr/bin/python
# coding: utf-8

def main():
    # Get date from user
    birthday = input('Enter birth date on the form DDMMYYYY: ')
    print(f'You entered {birthday}, {len(birthday)} digits.\n')
    num = len(birthday)

    # Read in decimals of Pi
    pidecimalfile = 'pi-decimals.txt'
    with open(pidecimalfile, 'r') as decimalfile:
        decimals = decimalfile.read()
        print(f'Loaded {len(decimals)} pi-decimals from {pidecimalfile}\n')

        # Look for date as a slice in the long range of decimals
        for pos in range(0,len(str(decimals)),1):
            x = decimals[pos:pos+num]
            if len(x) < num:
                break
            if x == birthday:
                print(f'Found number {birthday} in pos {pos}')
                
                # Check if position found is prime
                if (pos % 2) != 0:
                    if all(int(pos) % j for j in range(2, int(pos))):
                        # Also, check if pos is palindrom
                        reverse_pos = str(pos)[::-1]
                        if str(pos) == str(reverse_pos):
                            print(f"Position {pos} is a palindromeprime")
                        else:
                            print(f"Position {pos} is a prime")


if __name__ == "__main__":
    main()