How Do I Get The Resulting Output?

Question

I need a function that gives an output:

1111
    2222
        3333

This is what I got as a function:

def repeatNumber(someNumber):
    for i in range(0,someNumber):
        tabString = "\t"*i
        repeatingString = str(i+1)*4+"\n"
        finalString = tabString + repeatingString
        return finalString

But the output gives my only

when I try to

print(repeatNumber(3))

at the end.

I know I have to add to a string, but I'm not quite sure what string(s) to add together...

When I use print, I get an output of None at the very end of the string.. @Chris_Rands — aj2929, Mar 14 '17 at 11:22

score 0 · Answer 1 · answered Mar 14 '17 at 11:27

0

You are returning at the first iteraion of the loop. You can keep the result in a temporary variable and return that instead. Like this:

def repeatNumber(someNumber):
    return_string = ''
    for i in range(0,someNumber):
        tabString = "\t"*i
        repeatingString = str(i+1)*4+"\n"
        finalString = tabString + repeatingString
        return_string += finalString
    return return_string

answered Mar 14 '17 at 11:27

ham

716
5
12

Thank you! I didn't realize to put the return_string = " " in the beginning of the function! – aj2929 Mar 14 '17 at 11:36
1

You'd be better off making a list that you join rather than using `+=` on strings http://stackoverflow.com/questions/3055477/how-slow-is-pythons-string-concatenation-vs-str-join – Chris_Rands Mar 14 '17 at 12:31
Never knew this! And it is faster by a margin. Makes sense to use `join`. Thanks – ham Mar 15 '17 at 06:11

score 0 · Answer 2 · answered Mar 14 '17 at 11:32

0

In [9]: def repeatNumber(someNumber):
            for i in range(0,someNumber):
                tabString = "\t"*i
                repeatingString = str(i+1)*4+"\n"
                finalString = tabString + repeatingString
                print finalString

In [10]: repeatNumber(3)
1111

    2222

        3333

answered Mar 14 '17 at 11:32

manvi77

536
1
5
15

Oh wow! I haven't learned the In[] thing yet in class, but that seems very helpful! @manvi77 – aj2929 Mar 14 '17 at 11:36
@aj2929 The "In[] thing " just means they're using Jupyter Notebook IPython – Chris_Rands Mar 14 '17 at 12:29

How Do I Get The Resulting Output?

2 Answers2