Question

How to print a list in a triangular shape with Python

Answer 1

def printTriangle(lst):
    it = iter(lst) # iter() function returns an iterator for the given object
    i = 0
    while True:
        lst_val = next(it, None) # gets the next value
        if lst_val:
            print(lst_val, *(next(it) for _ in range(i)))  
            i += 1
        else:
            break
 
 
lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
 
printTriangle(lst)
 
 
 
'''
run:
 
1
2 3
4 5 6
7 8 9 10
 
'''

 

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