Ad:

Python Discussion Thread
Unsolved
Views: 1874

May 30th, 2007

can't figure out loop

Expand Post »

Python Syntax (Toggle Plain Text)
############################################################################
#                                                                          #
#   This program seeks out every copy of "starcraft.exe" in the computer   #
#   and deletes them.                                                      #
#   Created by Matt in Python 2.5 May 2007.                                #
#                                                                          #
############################################################################
 
import os
def file_find(folder):
    """search for a filename fname starting in folder"""
    for root, dirs, files in os.walk(folder):
        for file in files:
            # make search case insensitive
            if fname.lower() == file.lower():
                return os.path.join(root)
    return None
def deleteFileSearched():
    global COUNTER
    os.remove(trueResult)
    print trueResult + " deleted successfully..."
    COUNTER += 1
 
def main():
    # file to search for ...
    global fname
    global folder
    global trueResult
    global allfiles
 
    li2 = ["stardat.mpq", "starcraft.exe", "Local.dll",
           "storm.dll", "Smack32.dll"]
    li = ["c:\\", "d:\\", "e:\\", "f:\\"]
    for fname2 in li2:
        fname = fname2
        # folder to start search ...
        for folder in li:
            result = file_find(folder)
            if result == None:
                print fname, "not found in", folder
                continue
 
            trueResult = "<A href="file://\\".join((result">\\".join((result, fname))
            print "File found -->", trueResult
            deleteFileSearched()
    return True
COUNTER = 0
killSwitch = main()
while killSwitch == False:
    if killSwitch == True:
        break
    killSwitch = main()
print COUNTER, "files deleted"
 
############################################################################
#                                                                          #
#   This program seeks out every copy of "starcraft.exe" in the computer   #
#   and deletes them.                                                      #
#   Created by Matt in Python 2.5 May 2007.                                #
#                                                                          #
############################################################################
 
import os
def file_find(folder):
    """search for a filename fname starting in folder"""
    for root, dirs, files in os.walk(folder):
        for file in files:
            # make search case insensitive
            if fname.lower() == file.lower():
                return os.path.join(root)
    return None
def deleteFileSearched():
    global COUNTER
    os.remove(trueResult)
    print trueResult + " deleted successfully..."
    COUNTER += 1
 
def main():
    # file to search for ...
    global fname
    global folder
    global trueResult
    global allfiles
 
    li2 = ["stardat.mpq", "starcraft.exe", "Local.dll",
           "storm.dll", "Smack32.dll"]
    li = ["c:\\", "d:\\", "e:\\", "f:\\"]
    for fname2 in li2:
        fname = fname2
        # folder to start search ...
        for folder in li:
            result = file_find(folder)
            if result == None:
                print fname, "not found in", folder
                continue
 
            trueResult = "<A href="file://\\".join((result">\\".join((result, fname))
            print "File found -->", trueResult
            deleteFileSearched()
    return True
COUNTER = 0
killSwitch = main()
while killSwitch == False:
    if killSwitch == True:
        break
    killSwitch = main()
print COUNTER, "files deleted"

I need a way to make this loop until it doesn't find any file in any directory.... I can't figure out how to make it do that.

Similar Threads

Exponitial Loop in C++
Loop help in C++
changing loops (for to while) and (recursive to for) in C
Inheritance and Polymorphism in C++
Im completely lost on this one in C

Matt Tacular

Reputation Points: 10

Solved Threads: 7

Unverified User

Offline

187 posts
since Jun 2006

Permalink

May 30th, 2007

Re: can't figure out loop

Perhaps add near the start of main():
found = False
and add the last line to this sequence:

python Syntax (Toggle Plain Text)
            print "File found -->", trueResult
            deleteFileSearched()
            found = True
            print "File found -->", trueResult
            deleteFileSearched()
            found = True

... and change return True at the end of main() to return found.

So found starts out "False" meaning "none found" and gets set to "True" when anything is found. A "True" return from main() is interpreted as "not done, call me again".

I'd also change the loop at the bottom to be more like:

Python Syntax (Toggle Plain Text)
while main():
        pass  # True, call again
print COUNTER, "files deleted"
while main():
        pass  # True, call again
print COUNTER, "files deleted"

I'm not quite sure why a single pass doesn't do the trick, but that's not my business.

BearofNH

Reputation Points: 94

Solved Threads: 48

Posting Whiz

Offline

321 posts
since May 2007

Permalink

May 30th, 2007

Re: can't figure out loop

i'm helping an admin of a network where the users put starcraft everwhere and anywhere, and rename the folders, and have it in more than one place at once. so i need it to run until its found everywhere they hid it and wipe out the critical files.

Matt Tacular

Reputation Points: 10

Solved Threads: 7

Unverified User

Offline

187 posts
since Jun 2006

Permalink

May 30th, 2007

Re: can't figure out loop

LOL. Net administration is like cat-herding.

Here's a possibility for you: Starcraft won't run if the user doesn't have admin rights...

Just a thought.

Anyways, consider these two methods:

Python Syntax (Toggle Plain Text)
for file in file_list:
    if file somewhere in file_system:
       delete it.
for file in file_list:
    if file somewhere in file_system:
       delete it.

vs.

Python Syntax (Toggle Plain Text)
for file in entire_file_system:
   if file in file_list:
      delete it.
for file in entire_file_system:
   if file in file_list:
      delete it.

From a theoretical point of view, both are equally time-consuming. But practically, the second one wins hands-down because you are only traversing the file system once, which requires a lot of hard-drive access time.

AND,

the second one is easier to code.

Python Syntax (Toggle Plain Text)
def main():
 
    drives = ['c:/','d:/','e:/','f:/']
    bad_guys = ["stardat.mpq", "starcraft.exe", "Local.dll",
             "storm.dll", "Smack32.dll"]     
    for drive in drives:
        for root, dirs, files in os.walk(drive):
           for file in files:
               if file in bad_guys:
                  print 'found %s in %s' % (file, root)
                  delete_file(os.path.join(root,file))
main()
def main():

    drives = ['c:/','d:/','e:/','f:/']
    bad_guys = ["stardat.mpq", "starcraft.exe", "Local.dll",
             "storm.dll", "Smack32.dll"]     
    for drive in drives:
        for root, dirs, files in os.walk(drive):
           for file in files:
               if file in bad_guys:
                  print 'found %s in %s' % (file, root)
                  delete_file(os.path.join(root,file))
main()

I left out the counter and most of the logging, but that's the gist.

jrcagle

Reputation Points: 92

Solved Threads: 156

Practically a Master Poster

Offline

608 posts
since Jul 2006

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Python Forum Timeline: Multi-line terminal commands

Next Thread in Python Forum Timeline: combining strings with slash seperater

DaniWeb Message

Cancel Changes

User Name
Password