CODEWITHSUNDEEP
python
user1746600
user1746600

Reputation: 31

why the os.walk output has two subdirs

my program is 

import os
from traceback import format_exc
import pdb
des="testdir"
def generate_cabfile(folder):
    for parent,dirs, files in os.walk(folder):
        print parent
        print dirs
        print files
        print "-----------------"
        for file in files:
            file_path = os.path.join(parent, file)
        for dir in dirs:
            chile_folder = os.path.join(parent, dir)
            generate_cabfile(chile_folder)
    print "this is over"
generate_cabfile(des)

my dir tree is

testdir/1.txt
testdir/2.txt
testdir/mu/a.txt

the output is very strange,which has two dir 'mu' output：

testdir
['mu']
['1.txt', '2.txt']
-----------------
testdir/mu
[]
['a.txt']
-----------------
this is over
testdir/mu
[]
['a.txt']
-----------------
this is over

Upvotes: 0

Views: 33

Answers (1)

poke
poke

Reputation: 387557

os.walk already visits all subdirectories it encounters (that’s why it’s called “walk”; it walks through the whole directory structure). So you do not need to recursively call your function again for every directory you see.

Your logic would be appropriate if you were using os.listdir to just give you the contents of a single directory. In that case, you would have to recursively list the contents for every subdirectory too.

Upvotes: 1

Related Questions