The primary step in converting a string to an integer is using Python’s built-in conversion mechanism. This typically involves calling a function designed to interpret the string as a numeric ...

isalnum() Ensures that the string has no special characters, such as %, $, #, @, or !. isalpha() Ensures that the string contains only letters of the alphabet. isdecimal() Ensures that the string ...

You may supply an optional call-back function to assist in maintaining the persistence of the serial number sequence of multiple program runs. The Luhn-N check digit will detect any single character ...