[JamieVanCadsand]

Hey Python Programmers...

I try to create an script as an test, thad must be find PNG Files by name...
This is my script...

# Import fnmatch and os
import fnmatch
import os

# Search PNG-File by Name:
filesearch = input('Search File: ')
for file in os.walk(filesearch):
    if fnmatch.filter(file, '*.png'):
        print(file)

If i call in the name of any PNG Files, this script doesn't works...
No PNG file found wich starts with the first letter you call, they i get on my
computer (laptop)..... I use python 3....

I try to make an PNG-Searcher (or specific file-searcher), they must be find
PNG Files by name (or the png-files they get the same letters)...

If i run my script, no files found with the begin-letters or same names...
I get realy png-files where i get testing it... to look of my script works...

Can anyone give my the just code, so i can expiriment with it...
I am in the learn fase of python (or programming)...

Thanks for my code correction...
Jamie.

[b49P23TIvg]

The arguments to fnmatch.filter are a list and (I presume) a globbing.glob style regular expression. (filename matching pattern) Hence:

>>> fnmatch.filter(['horse.fly', 'house.fly'],'horse*')
['horse.fly']

And you can see that os.walk returns a nested list:

>>> os.chdir('/tmp')
>>> import pprint
>>> pprint.pprint([file for file in os.walk(os.curdir)])
[('.',
  ['.com.google.Chrome.ccfBLb',
   'systemd-private-af43573ce38f41d288f35735f44019d6-systemd-resolved.service-3mRoER',
   '.XIM-unix',
   'systemd-private-af43573ce38f41d288f35735f44019d6-apache2.service-0mKaXr',
   '.X11-unix',
   '.Test-unix',
   '.ICE-unix',
   'systemd-private-af43573ce38f41d288f35735f44019d6-fwupd.service-Xh9wyA',
   'docview1000',
   'launchpadlib.cache.wl63h22s',
   '.font-unix',
   'mozilla_lambertdw0',
   'hsperfdata_lambertdw',
   'thunderbird_lambertdw',
   'ssh-b6BLCRmIrbZn',
   'systemd-private-af43573ce38f41d288f35735f44019d6-rtkit-daemon.service-QUMCl1',
   'systemd-private-af43573ce38f41d288f35735f44019d6-colord.service-3lVy4V',
   'systemd-private-af43573ce38f41d288f35735f44019d6-systemd-timesyncd.service-8wO1xR'],
  ['geIconCacheLock',
   'Makefile',
   'unity_support_test.0',
   'GeckoChildCrash30155.extra',
   'config-err-ZA1PRp',
   'geColladaModelCacheLock',
   'p.py']),
 ('./.com.google.Chrome.ccfBLb', [], ['SingletonSocket', 'SingletonCookie']),
 ('./.XIM-unix', [], []),
 ('./.X11-unix', [], ['X1', 'X0']),
 ('./.Test-unix', [], []),
 ('./.ICE-unix', [], ['1611', '2225']),
 ('./docview1000',
  ['2017 Ministry Plan - 20170511 '
   'revisions.docx-0606cf14fd83a1dc0e3469b8ea1d1220'],
  []),
 ('./docview1000/2017 Ministry Plan - 20170511 '
  'revisions.docx-0606cf14fd83a1dc0e3469b8ea1d1220',
  [],
  ['resolution.el', 'doc.pdf', 'page-2.png', 'page-1.png']),
 ('./launchpadlib.cache.wl63h22s', [], []),
 ('./.font-unix', [], []),
 ('./mozilla_lambertdw0', [], []),
 ('./hsperfdata_lambertdw', [], []),
 ('./thunderbird_lambertdw', [], ['.parentlock']),
 ('./ssh-b6BLCRmIrbZn', [], ['agent.2007'])]
>>>

So you've got two problems. Using os.walk directly is incorrect. And when it returns a string, the filter function is trying to match one character at a time.

>>> print([c for c in 'long string'])
['l', 'o', 'n', 'g', ' ', 's', 't', 'r', 'i', 'n', 'g']

[JamieVanCadsand]

Originally Posted by b49P23TIvg

The arguments to fnmatch.filter are a list and (I presume) a globbing.glob style regular expression. (filename matching pattern) Hence:

>>> fnmatch.filter(['horse.fly', 'house.fly'],'horse*')
['horse.fly']

And you can see that os.walk returns a nested list:

>>> os.chdir('/tmp')
>>> import pprint
>>> pprint.pprint([file for file in os.walk(os.curdir)])
[('.',
  ['.com.google.Chrome.ccfBLb',
   'systemd-private-af43573ce38f41d288f35735f44019d6-systemd-resolved.service-3mRoER',
   '.XIM-unix',
   'systemd-private-af43573ce38f41d288f35735f44019d6-apache2.service-0mKaXr',
   '.X11-unix',
   '.Test-unix',
   '.ICE-unix',
   'systemd-private-af43573ce38f41d288f35735f44019d6-fwupd.service-Xh9wyA',
   'docview1000',
   'launchpadlib.cache.wl63h22s',
   '.font-unix',
   'mozilla_lambertdw0',
   'hsperfdata_lambertdw',
   'thunderbird_lambertdw',
   'ssh-b6BLCRmIrbZn',
   'systemd-private-af43573ce38f41d288f35735f44019d6-rtkit-daemon.service-QUMCl1',
   'systemd-private-af43573ce38f41d288f35735f44019d6-colord.service-3lVy4V',
   'systemd-private-af43573ce38f41d288f35735f44019d6-systemd-timesyncd.service-8wO1xR'],
  ['geIconCacheLock',
   'Makefile',
   'unity_support_test.0',
   'GeckoChildCrash30155.extra',
   'config-err-ZA1PRp',
   'geColladaModelCacheLock',
   'p.py']),
 ('./.com.google.Chrome.ccfBLb', [], ['SingletonSocket', 'SingletonCookie']),
 ('./.XIM-unix', [], []),
 ('./.X11-unix', [], ['X1', 'X0']),
 ('./.Test-unix', [], []),
 ('./.ICE-unix', [], ['1611', '2225']),
 ('./docview1000',
  ['2017 Ministry Plan - 20170511 '
   'revisions.docx-0606cf14fd83a1dc0e3469b8ea1d1220'],
  []),
 ('./docview1000/2017 Ministry Plan - 20170511 '
  'revisions.docx-0606cf14fd83a1dc0e3469b8ea1d1220',
  [],
  ['resolution.el', 'doc.pdf', 'page-2.png', 'page-1.png']),
 ('./launchpadlib.cache.wl63h22s', [], []),
 ('./.font-unix', [], []),
 ('./mozilla_lambertdw0', [], []),
 ('./hsperfdata_lambertdw', [], []),
 ('./thunderbird_lambertdw', [], ['.parentlock']),
 ('./ssh-b6BLCRmIrbZn', [], ['agent.2007'])]
>>>

So you've got two problems. Using os.walk directly is incorrect. And when it returns a string, the filter function is trying to match one character at a time.

>>> print([c for c in 'long string'])
['l', 'o', 'n', 'g', ' ', 's', 't', 'r', 'i', 'n', 'g']

OK, thanks for help, but my code works for my, see under:

import fnmatch
import os

# Search PNG from Input:
search = input("File Name: ") + '*.png'
for file in os.listdir('.'):
    if fnmatch.fnmatch(file, search):
        print(file)

Find 4 Type Image-Files, even this work for my:

import fnmatch
import os

# Search PNG, JPG, BMP and TIFF with an input:
search = input("File Name: ")
FindPNG = search + '*.png'
FindJPG = search + '*.jpg'
FindBMP = search + '*.bmp'
FindTIF = search + '*.tif'

for file in os.listdir('.'):
    if (((fnmatch.fnmatch(file, FindPNG) or fnmatch.fnmatch(file, FindJPG)) or ((fnmatch.fnmatch(file, FindBMP) or fnmatch.fnmatch(file, FindTIF))) :
        print(file)

This problem is fixed... but thanks for help...
Jamie.