Вставка в квадратную матрицу строки и столбца

data = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
data.insert(1, [0, 0, 0]) # вставка после 0 строки
[row.insert(2, 1) for row in data] # вставка после 1 стобца

n=int(input())
m=int(input())
a = []
for i in range(n):
    row = input().split()
    for i in range(len(row)):
        row[i] = int(row[i])
    a.append(row)
print()

n, data = int(input('n = ')), []
a, b = int(input('i = ')), int(input('j = ')),
for i in range(n):
    data.append([0] * n) if i + 1 == a else data.append(list(map(int, input().split())))
    data[-1].insert(b + 1, 1)
print(data)

for i in range(len(row)):
        row[i] = int(row[i])
    a.append(row)

for row in data:
    print(row)

n = int(input("Enter size: "))
l = [[int(j) for j in input().split()] for i in range(n)]
print()
for i in range(n):
    for j in range(n):
        print(l[i][j], end = ' ')
    print()
print()

n = int(input("Enter size: "))
l = [[int(j) for j in input().split()] for i in range(n)]
print()
for i in range(n):
    for j in range(n):
        print(l[i][j], end = ' ')
    print()
print()
nl = [[i] * n for i in range(n)]
s=[]
for i in range(n):
    for j in range(n):
        nl[j][i] = l[i][j]
for i in range(n):
    s.append([0]*n)
print()

data = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
data.insert(1, [0] * 3) # вставка ряда после 0 ряда
for i in range(len(data)): # 
    data[i].insert(1, 1) # постепенная вставка столбца после первого елемента
print(data))

for i in data :
    print(*i)