QGIS creating batch folder directory with incremented names by using Python console

Question

I have the directory, where I have to store all the items separately in the list of folders. This list includes exactly the same folders only with incrementing number, as you can see below:

Because I am going to have more than 200 folders, I decided to create all of them by using Python console in QGIS.

My approach so far looks as you can see below:

 import os
 path='C:\\Users\\mk\\Desktop\\AX\\Pre survey\\Tyton'
 os.chdir(path)
 for i in range (1,208):
 Newfolder='Strand-' + str(i)
 os.makedirs(Newfolder)

As per the tutorial below:

https://www.youtube.com/watch?v=4nr0eW3w1u4&ab_channel=PyBTV

Since I managed to create one folder, there is a problem with the batch of these folders.

First of all, I cannot put something like "leading 0", as I tried:

    for i in range (001,208)

I cannot do this, but I need the folder numeration as shown in the image.

Another issue is, that if I use the whole code presented, Python throws an error:

IndentationError: expected an indented block

debugging the following line:

    Newfolder='Strand-' + str(i)

The examples how to solve this error are here:

https://stackoverflow.com/questions/4446366/why-am-i-getting-indentationerror-expected-an-indented-block

https://stackoverflow.com/questions/492387/indentationerror-unindent-does-not-match-any-outer-indentation-level

but i couldn't apply them to my situation.

How can I do the batch directory creation with Python, preferably by QGIS python console?

Answer 1

Try this:

import os
path='C:\\Users\\mk\\Desktop\\AX\\Pre survey\\Tyton\\'
os.chdir(path)
for i in range (1,208):
    newfolder=path + 'Strand-' + str(format(i, '03'))
    os.mkdir(newfolder)

About your errors:

• wrong indentation means you need to indent your codeblock of a loop, see https://stackoverflow.com/questions/45621722/im-getting-an-indentationerror-how-do-i-fix-it/45621723#45621723 for a great answer on this topic. Usually this is done by a TAB or four whitespaces.
• for i in range (001,208) wont work, as 001 is not a number. Instead you can format your current i by using format(): str(format(i, '03')
• to create one folder, use os.mkdir()