Loop through files in a folder

[Thristan_]

Hi

I am not a very experienced programmer, but I searched around and couldn't fint an answer to my question, so I am posting it here.

I am trying to seach through a local directory and process all the files in that folder. The files are alle named "label" + " " + file_number. Processing the files is no problem, however I seem to get some rather strange errors when trying to read the files. The code i have been using to read the files is:

import os,glob

path = "C:\folder"

for subdir, dirs, files in os.walk(path):
    for file in files:
        f = open(file, 'r')
        print f.readlines()
        f.close()

Using this I am able to read file #0, however when it tries to read file #1 I get the following error:

IOError: [Errno 2] No such file or directory: 'label 1.dxp'

Could also mention that I am able to read file #10 by using a different approach (every other file gives errno 2, also #20 and #30), so could be a link there.

Thanks for your help.

[nezachem]

os.walk returns the filenames without the path prefix. That is, you are trying to open them in the current directory, where they do not exist. change line 7 to

f = open(os.path.join(subdir, file), 'r')

PS: your variable names are misleading.

[TrustyTony]

In single directory not descending in sub dirs:

import os
start = 'label'
for fn in (f for f in os.listdir(os.curdir) if f.startswith(start) and os.path.isfile(f)):
    print(fn)

[Thristan_]

Thank you very much, that did the trick! Will also try to pay more attention to my variable names :)

[richieking]

Just added tips ;)

import os
start = 'label'
for fn in (f for f in os.listdir(os.curdir) if f.startswith(start) and os.path.isfile(f)):
with open(fn) as fnFile:
  print(fnFile.read())