Multiplication table with formatting and validation

multiplication_table.py

while True:
    try:
        size = int(input("Enter mutliplication table for: "))
        if not 1 <= size <= 10:
            raise ValueError()
    except ValueError:
        print("Invalid entry. Valid entry between 1 - 10")
    else:
        for i in range(1, size + 1):
            print(f"{'':>3}".join(str(i * j) for j in range(1, size + 1)))
            # or
            # print("".join(str(f"{i * j:<3}") for j in range(1, size + 1)))
        break
                

Output.md

Enter mutliplication table for: 10

   1   2   3   4   5   6   7   8   9  10
   2   4   6   8  10  12  14  16  18  20
   3   6   9  12  15  18  21  24  27  30
   4   8  12  16  20  24  28  32  36  40
   5  10  15  20  25  30  35  40  45  50
   6  12  18  24  30  36  42  48  54  60
   7  14  21  28  35  42  49  56  63  70
   8  16  24  32  40  48  56  64  72  80
   9  18  27  36  45  54  63  72  81  90
  10  20  30  40  50  60  70  80  90 100