Prevent Code Errors?

[Matt Tacular]

Here is my code:
[php]# search for a file, and show all files found in that file's directory
# delete them if wanted

import os
import pickle

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

# file to search for ...
fname = raw_input("File? ")
# folder to start search ...
folder = raw_input("Directory? ")

result = file_find(folder)

if result:
print "File found -->", result
print "\n===============================\nFollowing are the files in the same directory\n===============================\n"
directory = result

allfiles = [] #store all files found
for root,dir,files in os.walk(directory):
filelist = [ os.path.join(root,fi) for fi in files ]
for f in filelist:
allfiles.append(f)

fileAmount = len(allfiles)

for i in allfiles:
print "file ", i

print "\n===============================\n"

counter = 0
while counter != fileAmount:

showFile = allfiles[counter]

counter += 1

if counter == fileAmount:
break

deleteFiles = raw_input("Delete whole list? (y/n): ")

if deleteFiles == "Y" or deleteFiles == "y":

print "Sure?"
positive = raw_input("To delete, type: 'delete', to not delete, type anything else... ")
if positive == "delete" or positive == "Delete":

counter = 0
while counter != fileAmount:

hostageFile = allfiles[counter]

os.remove(hostageFile)

counter += 1

print "deleted",counter,"files..."

if counter == fileAmount:
break
raw_input("")

else:
print "NO files deleted..."
raw_input("")

else:
print "NO files deleted..."
raw_input("")

else:
print "File %s not found" % fname
raw_input("")[/php]
But when it is trying to delete a directory with files that wont be easily deleted, it errors and closes.

I would like to add to the code a way to tell it to skip files that don't want to be deleted, and continue deleteing other files.

[sneekula]

Sounds like hard program to play around with. You could really do some damage to files in your hard drive!

[Matt Tacular]

Yes, yes you can. It has a purpose though, my computer teacher likes to mess up the games kids install in the lab, give them a challenge if they want to play, and I made this program which he can use to sometimes delete the map files or whatnot, and since it searches for a file, even if they try to hide the game, that won't help, but sometimes it will error and just stop, I want it to skip the file it can't delete and continue on.

[Matt Tacular]

Is there no way to do this?

[Zonr_0]

I don't have much time, so I can only really post this much. Take a look at Mouche's scheduling program:
[PHP]
def add_address(self):
try:
self.address = schedule_data[0][3]
except IndexError:
pass
try:
self.city = schedule_data[0][4]
except IndexError:
pass
try:
self.state = schedule_data[0][5]
except IndexError:
pass
try:
self.zip = schedule_data[0][6]
except IndexError:
pass
[/PHP]

IndexError can be replaced with whatever type of error you're trying to catch. Hopefully somebody else with more time can explain this more fully. :)

[LaMouche]

Here is a list of all the built-in errors to "except" using the try-except statements:
http://www.python.org/doc/2.4.1/lib/module-exceptions.html

But, the easiest thing to do is run your code in a way that you can see the traceback errors. It will say something like "IndexError." Then just write whatever you want to do under the "try:" and then below it write an "except IndexError:", which executes if the code under the "try:" gets an error. Like Zonr said, you replace "IndexError" in my example with whatever error is shown by the traceback errors.

[sneekula]

The module shutil has functions for deleting whole directory trees.