#importing modules gives us more features
    import praw,string,os #praw = allows us to talk to reddit, string = removes anything that's not letters numbers or punctuation, os = allows us to create folders and files
    from random import choice #get the function "choice" from the "random" library, choice = randomly selects an item from a list
    from Tkinter import * #allows us to create a GUI

    printable = set(string.printable) #removes anything that's not letters numbers or punctuation

    user_agent = ("contest_automaton/v0.1 (by /u/Anatoly_Korenchkin)") #this is what the bot tells reddit it's name is
    account_file=open('account_file.txt','r')                          #open the account file so we can read it
    REDDIT_USERNAME = account_file.readline().strip('\n')              #read the first line, python automatically move to the next line after reading
    REDDIT_PASS = account_file.readline().strip('\n')                  #read the second line
    REDDIT_CLIENT_ID = account_file.readline().strip('\n')             #read the third line
    REDDIT_CLIENT_SECRET = account_file.readline().strip('\n')         #read the forth line

    #logon to reddit
    r = praw.Reddit(user_agent = user_agent,client_id=REDDIT_CLIENT_ID,client_secret=REDDIT_CLIENT_SECRET,username=REDDIT_USERNAME,password=REDDIT_PASS)

    root = Tk() #create the window
    root.wm_title("Contest_bot") #name the window
    root.resizable(0,0)          #stops the user from being able to resize the window
    root.geometry('{}x{}'.format(400, 50)) #sets the windows size
    root.columnconfigure(1, weight=1)      #these three lines make sure the "Paste" button takes up less space than the entry boxes
    root.rowconfigure(0, weight=1)
    root.rowconfigure(1, weight=1)

    directory=os.getcwd()+'/Excel Contest Records' #the directory of the folder "Excel Contest Records"
    if not os.path.exists(directory): #if the folder doesn't exist
        os.makedirs(directory) #then create the folder
    os.chdir(directory) #go into the folder, so that when we create a file it will end up here because that's where the program is looking

    def paste(): #run this when the button is pressed
        root.wm_title("Contest_bot - Processing...") #name the window
        text = root.selection_get(selection='CLIPBOARD') #get the text from the clipboard

        submission = r.submission(url=text) #get data about the post in the pasted url
        submission.comments.replace_more(limit=None, threshold=1) #get ALL comments
        commentlist= submission.comments #only get the top levlel/root comments

        root_comments=[] #create a list to store all the comments
        comment_authors=[] #create a list that stores all the comments, but removes duplicates
        comment_bodys=[] #stores the text in each comment
        for comment in commentlist: #go over each comment
            root_comments.append(comment) #add it to the list "root_comments"
        root_comments.sort(key=lambda comment: comment.created_utc, reverse=True) #sort the comments by date
        for comment in root_comments: #go over each comment
            if comment.author not in comment_authors: #if we have not seen this user before
                comment_authors.append(comment.author) #add him to the list
                comment_bodys.append(comment.body) #also add his comment text to the list
        print 'Collected '+str(len(root_comments))+' root comments. Removed '+str(len(root_comments)-len(comment_authors))+' duplicates.'

        save_file=open('Contest_'+submission.id+'.csv','w') #create a file to save the data
        save_file.write('#,Name,Comment\n') #write the headers to the file

        winner = choice(comment_authors) #select a winner
        user_entry_text.set(winner) #display the winners name in the GUI
        entry_text.set(submission.id) #display the post ID in the GUI

        for count,comment in enumerate(comment_authors): #go over every comment so we can write it to the file
            if comment==winner: #if the user was the selected winner then add WINNER to his number
                tag='WINNER'
            else:
                tag=''
            text=filter(lambda x: x in printable, comment_bodys[count]) #removes anything that's not letters numbers or punctuation
            save_file.write(tag+str(count+1)+','+str(comment)+','+str(text).replace('\n',' ').replace(',','')+'\n') #write the user to the file



        root.wm_title("Contest_bot - Done") #name the window



    entry_text=StringVar() #create the variables where the input to the entry boxes is stored
    entry = Entry(root, width=67, textvariable=entry_text) #create the entry boxes for the post ID


    user_entry_text=StringVar() #create the variables where the input to the entry boxes is stored
    user_entry = Entry(root, width=67, textvariable=user_entry_text) #create the entry boxes for the winner

    bot_url = Label(text='URL: ') #add this text to the GUI

    bot_select = Label(text='I have selected: ') #add this text to the GUI

    button_1=Button(root, text='Paste URL', command=paste, width=17) #create a button
    button_1.grid(row=0, column=2)            #place a button in the window
    bot_url.grid(row=0, column=0,sticky=W)    #place the text in the window
    entry.grid(row=0, column=1,sticky=W)      #place the entry box in the window
    bot_select.grid(row=1, column=0,sticky=W) #place the text in the window
    user_entry.grid(row=1, column=1,sticky=W) #place the entry box in the window

    root.mainloop() #stop the window from closing