User input for triangles in python

Question

I would like to create a triangle and take user input from the user. I have already created the function for creating triangles.

Function:

def triangle(rows):
    PrintingList = list()
    for rownum in range (rows ):     
        PrintingList.append([])
        for iteration in range (rownum):
            newValue = raw_input()
            PrintingList[rownum].append(newValue)

But this takes input in this way..

I need it to take a input like this:

How do it change it to take input in this way? need some guidance on this...

seems like a trick question in which the real goal is to flatten the input list back to the accepted input and continue... — Joran Beasley
– Joran Beasley, Commented Sep 1, 2012 at 17:53

Oleksii Kachaiev · Accepted Answer · 2012-09-01 17:50:52Z

4

for rownum in range (rows ):     
    PrintingList.append([])
    newValues = raw_input().strip().split()
    PrintingList[rownum] += newValues

I don't see here if you need or not to convert input from strings to ints.. But if you need, this will look like

for rownum in range (rows ):     
    PrintingList.append([])
    newValues = map(int, raw_input().strip().split())
    PrintingList[rownum] += newValues

answered Sep 1, 2012 at 17:50

Oleksii Kachaiev

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