PYTHON 3.0 HELP!! (NOT JAVA)

Given a variable n refers to a positive int value, use two additional variables, k and total to write a for loop to compute the sum of the cubes of the first n counting numbers, and store this value in total. Thus your code should put 1*1*1 + 2*2*2 + 3*3*3 +... + n*n*n into total. Use no variablesother than n, k, and total

Given the strings s1 and s2, not necessarily of the same length, create a new string consisting of alternating characters of s1 and s2 (that is, the first character of s1 followed by the first character of s2, followed by the second character of s1, followed by the second character of s2, and so on. Once the end of either string is reached, the remainder of the longer string is added to the end of the new string. For example, if s1 contained "abc"and s2 contained "uvwxyz", then the new string should contain "aubvcwxyz". Associate the new string with the variable s3

Write some code that repeatedly reads a value from standard input into the variable response until at last a Y or y or N or n has been entered.