By python

The s equal to half the sum of all its positive divisors: (1 +2+3+6)/2-6. +2+4+7+14 next on that receives a number and determines whether it is a perfect or not 10. Write a Python function that accepts a string and calculate the number of upper case letters and lower cas letters. Note that char.isupperO returns True if the char is uppercase and false, otherwise. Similarly, char.islo returns True if the char is lowercase and false, otherwise