is small letter in python code example
Example: python lowercase
// turn to lower/upper
string = string.upper()
string = string.lower()
// check if all letter are lower or upper
string.islower()
string.isupper()
// turn to lower/upper
string = string.upper()
string = string.lower()
// check if all letter are lower or upper
string.islower()
string.isupper()