Life of the IT-Drummer

import time
import os
 
avail_topics_in_file = []
topics = []
 
#Traverse folder
for root, dirs, files in os.walk("."):
    for file in files:
        #Check if file ends with .txt
        if file.endswith(".txt"):
            avail_topics_in_file.append(file)
 
#print topics
print "Select topic:"
for i in range(0,len(avail_topics_in_file)):
    print i+1,avail_topics_in_file[i]
 
#find topic
selected_topic = int(raw_input())-1
chosen_file = avail_topics_in_file[selected_topic]
 
print "You have selected",chosen_file.split(".")[0] + "."
 
#Run through file and add each line to topics
f = open(chosen_file)
for line in f:
    topics.append(line.strip())
 
#Save answer to answer-variable
answer = topics
topics_len = len(topics)
 
#Initialize array and number of found topics.
found_topics = []
found_topics_len = 0
 
#Save number of hints used, and how many character we show for each hint
used_hints = 0
helpchars = 2
 
start = time.time()
 
#Function which print strint with the title function
def print_title(x):
    print x.title()
 
#Function which prints all entries in the list.
def print_all_from_list(list):
    map(lambda x: print_title(x),list)
 
print "To recieve a hint, please type \"hint\"."
 
#Loop which runs until all topics are found or user breaks it by typing "stop"
while True:
    print "Here are your currently solved words:"
 
    #Check how many hints are left
    if 5-used_hints < 0:
        hint_text = 0
    else:
        hint_text = 5 - used_hints
    print "You have " + str(hint_text) + " hint igjen."
 
    #Print all found topics
    for i in found_topics:
        print "-" ,i
 
    #print number of found topics / all topics.
    print found_topics_len , "of" , topics_len
 
    #Get new input
    input = raw_input().lower()
 
    #check if input is one of the answers, and remove it if it is.
    if input in topics:
        for i in range(0, topics_len):
            if input == topics[i-1]:
                topics.pop(i-1)
                break
 
        #Increase number of found topics, and add it to the found_topics-list.
        found_topics_len += 1
        found_topics.append(input)
 
        #Reset the helpindex
        helpchars = 2
 
        #Check if all topics are found and print some information
        if found_topics_len == topics_len:
            print "\nHurray! You won the game!"
            time_used = time.time() - start
            print "You needed " + str(used_hints) + " hints and used" ,
            str('%.2f'%(time_used))  + " seconds in total.\n"
            print "Here are the answers:"
            print_all_from_list(found_topics)
            break
    #user wants a hint.
    elif input == "hint":
        if(used_hints < 5):
            print "\nHint:" , topics[0][0:helpchars]
        else:
            print "Du er tom for hint!"
        helpchars += +2
        used_hints += 1
 
    #user wants to stop.
    elif input == "stop":
        print "You gave up. Poor you. Here's the answers:"
        print_all_from_list(answer)
        break
    else:
        #Word is not found.
        print "Word not found. Sorry"
    print "\n"