Напишите функцию, которая создает, заполняет и возвращает матрицу заданного размера

from random import randint
 
 
def maxline(matrix):
    line_sum = [sum(line) for line in matrix]
    return line_sum.index(max(line_sum))
 
 
i = int(input('Number of columns: '))
j = int(input('Number of lines: '))
 
matrix = [[randint(0, 9) for _ in range(i)] for _ in range(j)]
 
for line in matrix:
    print(*line)
 
del (matrix[(maxline(matrix))])
 
print()
for line in matrix:
    print(*line)

def matrix(n =1,m = 0, a = 0):
    if n == 1 and not m:
        m = 1
    elif n != 1 and not m:
        m = n
    return [[a for _ in range(n)] for _ in range(m)]

def matrix(n=None,m=None,a=0):
    if n==None and m==None:
        n=1
        m=1
    elif m==None:
        m=n
    return [[a for i in range(m)] for j in range(n)]

def matrix(n=1, m=0, a=0):
    if n == 1 and not m:
        m = 1
    elif n != 1 and not m:
        m = n
    return [[a for _ in range(m)] for _ in range(n)]

def matrix(*arg):
    if len(arg) == 1:
        return [[0] * arg[0] for i in range(arg[0])]
    elif len(arg) == 0:
        return [[0]]
    elif len(arg) == 2:
        return [[0] * arg[1] for i in range(arg[0])]
    elif len(arg) == 3:
        return [[arg[2]] * arg[1] for i in range(arg[0])]