please help me with # 5 : in python language pls

Let A be a (53) randomly generated matrix A=nprandom.randint(2,5,size=(5,3)) ith integer elements in the interval [2,5); and let b a (51) randomly generated vector b=nprandom.randint(2,3,size=(5,1)) ith integer elements in the interval [2,3). 1. 2 . 3. 4. 5. Find the QR factorization of A,ATA, and AAT. Use these factorizations to solve: Ax=b,ATAx=ATb, and AATx=b