I have a basic question of FOR loop list comprehension for particular pattern printing

Question

This is basic "for loop" pattern printing code as follows:

for i in range (1,5):
    for j in range (i, 5):
        print(j , end='')
    print()

output:

1234
234
34
4

But I want the same as the above output using same logic using the List Comprehension.

for list Comprehension.

I tried:

[print(j,end='') for i in range(1,5) for j in range(i,5)]

and output is:

1234234344

Answer 1

Don't use a list comprehension for side effects , use a plain for-loop instead, ie your original code.

But here's how you would do it, by using unpacking instead of a second loop:

[print(*range(i, 5), sep='') for i in range(1, 5)]

So you could do this instead:

for i in range(1, 5):
    print(*range(i, 5), sep='')

Answer 2

You can approach this by using a function instead:

def myfn(i):
    for j in range(i,5):
        print(j,end='')
    print()


[myfn(i) for i in range(1,5) ]