If someone can help with these two questions I would really appreciate it, its programming in Python.

Problem 1 (7 points): Write a function isMatrix which has one argument as input, and which returns either True or False. You can assume that the argument provided is a list of lists. The function must return True if all lists (representing rows) have the same length. Otherwise the returned value must be False. Problem 2 (8 points): Write a function matMul, which accepts two arguments. When being called as matMul(A,B) with matrices A, B the function must return the matrix product A"B, if isMatrix(A) and isMatrix(B) are both True and the number of columns in A is equal to the number of rows in B; otherwise the function must return a string "invalid arguments