Python - Generar una matriz mediante dos bucles for en python

f = int(input("Ingresar el numero de filas= "))

c = int(input("Ingresar el numero de columnas= "))

B=[]

for i in range(f):

    for j in range(c):

        B[i][j] = i*j

f=3

c=5

B = [[0 for x in range(c)] for y in range(f)]

for i in range(f):

    for j in range(c):

        B[i][j] = i*j

import numpy as np

f = int(input("Ingresar el numero de filas= "))

c = int(input("Ingresar el numero de columnas= "))

B = np.array([[0 for x in range(c)] for y in range(f)])

for i in range(1,f):

    print(i)

    for j in range(1,c):

        print(j)

        B[i][j] = (i+1)*(j+1)

        print(B)

print(B.transpose())