How to restrict the number of digits in an fstring in Python

Question

I would like to use an f-string in Python to generate the following folders:

folder01
folder02
folder03
folder04
folder05
folder06
folder07
folder08
folder09
folder10
folder11

I currently have the following code, which obviously doesn't do what I want, but how can I change it so that it does?

folders = [f"folder0{i}" for i in range(0,12)]

This generates:

folder01
folder02
folder03
folder04
folder05
folder06
folder07
folder08
folder09
folder010
folder011

Notice the extra 0 with folder010 and folder011

@IainShelvington it does – An Ignorant Wanderer Jul 27 '20 at 03:07 — An Ignorant Wanderer, Jul 27 '20 at 03:07

Philip Purwoko · Accepted Answer · 2020-07-27T03:18:22.783

0

You can do that in simple way

folders = [f"Folder{i:0=2d}" for i in range(1,12)]

print(folders)

Output

['Folder01', 'Folder02', 'Folder03', 'Folder04', 'Folder05', 'Folder06', 'Folder07', 'Folder08', 'Folder09', 'Folder10', 'Folder11']

edited Jul 27 '20 at 03:18

answered Jul 27 '20 at 03:01

Philip Purwoko

407
5
20

score 0 · Answer 2 · answered Jul 27 '20 at 03:04

0

Taken the hint from this answer:

[f"folder{i:02}" for i in range(1,12)]

['folder01',
 'folder02',
 'folder03',
 'folder04',
 'folder05',
 'folder06',
 'folder07',
 'folder08',
 'folder09',
 'folder10',
 'folder11']

answered Jul 27 '20 at 03:04

Madhoolika

396
2
8

How to restrict the number of digits in an fstring in Python

2 Answers2