PYTHON - PATTERNS 1

Pattern 1:

num = 0
for row in range(5,0,-1):
    for col in range(1,row+1):
        print(col+num,end = '   ')
    num+=row
    print()

Output:
1 2 3 4 5

6 7 8 9

10 11 12

13 14

15

Pattern 2:

value = 64
for row in range(5,0,-1):
    no = 1
    for col in range(1,row+1):
        print(chr(value+no),end = ' ')
        no+=1
    num+=row
    print()

Output:
A B C D E
A B C D
A B C
A B
A

Pattern 3:

value = 64
for row in range(1,6):
    no = 1
    for col in range(1,row+1):
        print(chr(value+no),end = ' ')
        no+=1
    num+=row
    print()

Output:
A
A B
A B C
A B C D
A B C D E