Question

I have a script that compiles few programs and puts the output into a folder, I have a function in my script that iterates and finds all the executables in the folder and adds them into a list,

def _oswalkthrough(direc,filelist=[]):
    dirList=os.listdir(direc)
    for item in dirList:
        filepath = direc+os.sep+item
        if os.path.isdir(filepath):
            filelist = _oswalkthrough(filepath,filelist)
        else:
            if ".exe" == item[-4:]:
                filelist.append(filepath)
    return filelist

This works with out any problem on windows, but when I run this on a mac, I can’t get it to work, of course the compiled files in mac doesn’t end with “.exe”, so that if statement is useless, so I made a list that contains the name of the compiled files and changed the script to the following, but still no result, it adds all the files, including the “.o” files, which I do not want!. I just want the exe? (I don’t know what they are called in mac !).

def _oswalkthrough(direc,filelist=[]):
    dirList=os.listdir(direc)
    for item in dirList:
        filepath = direc+os.sep+item
        if os.path.isdir(filepath):
            filelist = _oswalkthrough(filepath,filelist)
        else:
            for file in def_scons_exe:
                if file == item[-4:]:
                    filelist.append(filepath)
    return filelist

Answer 1

Looks like the section:

for file in def_scons_exe:
    if file == item[-4:]:
        filelist.append(filepath)

Should be:

for file in def_scons_exe:
    if file == item[-len(file):]:
        filelist.append(filepath)
        break

This change makes the program look for extensions of any length, not just 4 characters. It also stops looking through the extensions when it finds one that matches.

Also, you should try using the os.walk function to simplify your code as well as os.access([path], os.X_OK) to test for execute permissions.