Searching sub directories in a path

import os

exit = ('quit', 'exit', 'q', 'e', '0')


while True: 
    try: 
    
        path = raw_input('\nDirectory to search: ')
        path2 = path.lower()
        if path2 in (exit): 
            print 'Good Bye'
            break
        
        string = raw_input('String to search for: ')
        string2 = string.lower()
        if string2 in (exit): 
            print 'Good Bye'
            break
        
        ext = raw_input('Specify the extension of files to examine: ')
        ext2 = ext.lower()
        if ext2 in (exit): 
            print 'Good Bye'
            break

        count = 0 #total number of objects
        count1 = 0 #number of files
        count2 = 0 #files ending with the extension
        direct = 0 #number of sub-directories in path

        found = []
        subs = []

        for file in os.listdir(path): 
            count = count+1

            if os.path.isdir(path+file): 
                direct = direct+1
                subs.append(file)
                
            if os.path.isfile(path+file): 
                count1 = count1+1
                file2 = file.lower()
                
                if file2.endswith(ext2): 
                    count2 = count2+1
                    
                if string2 in (path+file2) and file2.endswith(ext2): 
                    found.append(file)

                    
        print '\nTotal Objects In Directory: ', count
        print 'Number Of Sub Directories:', direct
        print 'Number Of Files:', count1
        print 'Number Of Files Ending With "'+ext+'": ', count2
        print '\nSub Directories:'
        #print subs
        for file in subs: 
            print file
                    
        print '\n"'+ext+'" files that have "'+string+'" in the name:'
        #print found
        for file in found: 
            print file
            
    except: 
        print '\nError.Try again.'

path = raw_input("Path: ")
if path.lower() in exit:
    ...
    do stuff
    ...