#!/usr/bin/env python3

# Main function
def main() -> None:
    """
    Number formatting in f-string using format specifiers
    The following prints will output

     314%
     3.14
     12,345
     00012345
         12345
    len(str(var1)) = 8
    """
    var1: float = 3.141516
    var2: float = 12345
    print(f"{var1: .0%}")
    print(f"{var1: .2f}")
    print(f"{var2: ,}")
    print(f"{var2: 09}")
    print(f"{var2: >10}")
    print(f"{len(str(var1)) = }")

# Call main function
if __name__ == '__main__':
    main()