CODEWITHSUNDEEP
python
Leahcim
Leahcim

Reputation: 42009

how to iterate over files in neighbouring dir

I have a project structure like this

test/foo.py
test/bar (directory with 10 files)
src/
README.MD

From foo.py (which is in test dir), I wish to iterate over the 10 files in the bar dir (which is also in test dir). I tried to do this

import os

for path in os.listdir('bar'):
    etc

But it says, "no such file or directory: bar"

I then tried to do this

basepath = '/Users/me/pythonprojects/project_x/bar' 
for path in os.listdir(basepath):
    etc

However, when I counted over the number of files it iterated over, it was 0 (Not the expected 10).

I then tried to do this

   for path in '/Users/me/pythonprojects/project_x/test/bar':
       etc

However, it then iterated over every file in my system (hundreds, not just the 10 in bar).

Although this is not what I wish to do, if from the command line I pass an argument of . to sys.argv[1] and then try to iterate over the bar dir like this

for path in sys.argv[1]

It iterates over the ten files in the bar dir.

So, is there a way from foo.py to iterate over the files in bar (and only the files in bar dir)

Update, when I do print(os.getcwd(), "foo.py cwd") in foo.py (and then call the test runner from run_test.py in root), it says

/Users/me/pythonprojects/project_x

i.e. os.getcwd() doesn't recognize that foo.py is in test dir of the project, which may be because the test is run from root?

Upvotes: 0

Views: 93

Answers (1)

featuredpeow
featuredpeow

Reputation: 2201

Use functions in os.path to do this (works only from a script, not REPL):

import os

# retrieve path to directory with script
script_dir = os.path.dirname(os.path.realpath(__file__))

bar_dir = os.path.join(script_dir, 'bar')

for f in os.listdir(bar_dir):
    print(f)

Upvotes: 1

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