Python programing newbie needs help

print
selection = raw_input("Please enter a filename to read: ")
while selection != ("nytimes.py" or "bill.py" or "py.py"):
    print("Error that file does not exist!")
    selection = raw_input("Please enter a filename to read: ")
    break
if selection == ("nytimes.py"):
    ing_verb1 = raw_input("Please enter a ing verb: ")
    verb1 = raw_input("Please enter a verb: ")
    noun1 = raw_input("Please enter noun: ")
    adjective1 = raw_input("Please enter adjective: ")
    verb2 = raw_input("Please enter a verb: ")
    er_adjective1 = raw_input("Please enter a er adjective: ")
    adjective2 = raw_input("Please enter adjective: ")
    verb3 = raw_input("Please enter a verb: ")
    ing_verb2 = raw_input("Please enter a ing verb: ")
    adjective3 = raw_input("Please enter a adjective: ")
    verb4 = raw_input("Please enter a verb: ")
    plural_noun1 = raw_input("Please enter a plural noun: ")
    ed_verb1 = raw_input("Please enter a ed verb: ")
    plural_noun2 = raw_input("Please enter a plural noun: ")
    adjective4 = raw_input("Please enter a adjective: ")
    proper_name1 = raw_input("Please enter a proper name: ")
    profession1 = raw_input("Please enter a profession: ")
    acronym1 = raw_input("Please enter a acronym: ")
    ed_verb2 = raw_input("Please enter a ed verb: ")
    noun2 = raw_input("Please enter a noun: ")
    adjective5 = raw_input("Please enter a adjective: ")
    city1 = raw_input("Please enter a city: ")
    car_part1 = raw_input("Please enter a car part: ")
    car_part2 = raw_input("Please enter a car part: ")
    number1 = raw_input("Please enter a number: ")
    proper_name2 = raw_input("Please enter a proper name: ")
    adjective6 = raw_input("Please enter a adjective: ")
    preposition1 = raw_input("Please enter a preposition: ")
    adverb1 = raw_input("Please enter a adverb: ")
    ing_verb3 = raw_input("Please enter a ing verb: ")
    noun3 = raw_input("Please enter a noun: ")
    adverb2 = raw_input("Please enter a adverb: ")
    adjective7 = raw_input("Please enter a adjective: ")
    ing_verb4 = raw_input("Please enter a ing verb: ")
    verb5 = raw_input("Please enter a verb: ")
    nytimes = "October 22, 2003    The New York Times--TECHNOLOGY
    <ing_verb> Soon: Smarter Ways to <verb>, Turn and Cruise
    By TIM MORAN
     
    Your <noun> is becoming a much <adjective> driver.

    It can already <verb> the brakes to avoid a skid far <er_adjective> than the 
    most skillful driver; turn on its <plural_noun> when darkness falls; activate 
    its <adjective> wipers when it starts to <verb>; and avoid <ing_verb> the wheels 
    on <adjective> pavement.

    Just <verb> though. As new <plural_noun> that are still being tested by auto 
    suppliers are <ed_verb> mostly in luxury models, the <plural_noun> will work 
    to prevent driver mistakes.

    Enhanced <adjective> Control

    <proper_name> Cossins, the chief <profession> for braking systems at <acronym> 
    Automotive, an international supplier, <ed_verb> through congested <noun> on a 
    <adjective> freeway in <city> recently — without touching the <car_part> or 
    <car_part>— to demonstrate the Autocruise adaptive cruise-control system that 
    is in the new $<number> Volkswagen <proper_name>.

    With a <adjective> unit hidden <preposition> the front bumper, the Phaeton 
    <adverb> adjusted to the speed of a <ing_verb> commuter ahead. Then, when 
    Mr. Cossins shifted to the next <noun>, the car accelerated <adverb> to its 
    <adjective> speed, <ing_verb> nimbly when a lawn-service truck <verb> into the flow."

>>> a = ["fred","tom","harry"]
>>> b = "tom"
>>> b in a
True
>>> b not in a
False

#!/usr/bin/python
noun1 = raw_input("noun: ")
verb1 = raw_input("verb: ")
noun2 = raw_input("another noun: ")

madlib = "%(noun1)s %(verb1)s over the %(noun2)s." % vars()

print madlib

>>> n = "string"
>>> print "This is a %s" % n
...
This is a string

>>> n = {}
>>> n["test"] = "blah"
>>> print "This is a %(test)s" % n
...
This is a blah

#!/usr/bin/env

from re import findall

lines = []
path = 'sample.txt'

try:
	for line in file(path, 'r'):
		for tag in findall('<.+?>', line):
			line = line.replace(tag, raw_input('Replace %s with ' % tag))

		#append the line including alterations to 'lines' before writing
		#to a file (user prompted).

		lines.append(line)

	file(raw_input('Save file as '), 'w').writelines(lines)

except Exception, note: print note

I am sample.txt, i need <noun1>, <verb1>, <verb2> and <ing1> to work.
You should also note, i can use any name between less-than and more than operators i.e. <much better>

import string
def find(str, ch, index): # This function finds how many opening brackets#
  while index < len(str): #there are in the text which tells, how many variables is present.#
    if str[index] == ch: 
      return index 
    index = index + 1
def countbrackets(str, ch):
    bracketcounter = 0
    index = 0
    while index<len(str):
        if str[index] == ch:
            bracketcounter = bracketcounter + 1
        index = index + 1
    return bracketcounter
loopcounter=0
while loopcounter==0:
    try:
        file_selection= raw_input ("Please enter a filename to read:")
        madlibopen= open(file_selection,"r")
        loopcounter=1
    except:
        print "This file does not exist."
        loopcounter=0

readmadlib=madlibopen.read()
madlibopen.close()
madlib=""
firstbracket=find(readmadlib, "<", 0)
insertwords=readmadlib[:firstbracket]
madlib=madlib+insertwords
lastbracket=find(readmadlib, ">", firstbracket)
insertwords=readmadlib[firstbracket +1:lastbracket]
insertwords= raw_input("Please enter a " + insertwords + ":")
madlib = madlib + insertwords
repeatnumber=countbrackets(readmadlib, "<")
loops=1
while loops<repeatnumber:
    firstbracket=find(readmadlib, "<", lastbracket)
    insertwords=readmadlib[lastbracket + 1:firstbracket]
    madlib=madlib+insertwords
    lastbracket=find(readmadlib, ">", firstbracket)
    insertwords=readmadlib[firstbracket +1:lastbracket]
    insertwords= raw_input("Please enter a " + insertwords + ":")
    madlib = madlib + insertwords
    loops=loops+1
    

filename = raw_input ("Enter a filename to save you madlib as ( Press enter not to save ):")
if filename=="":
      print ""
      print madlib
else:
      outputfile = open(filename, "w")
      outputfile.write(madlib)
      outputfile.close()
print ""
print madlib

>>> import re
>>> n = re.compile("<[^>]*>")
>>> q = "<this> here is some <stuff> <blah>"
>>> z = n.findall(q)
>>> z
['<this>', '<stuff>', '<blah>']