Python 2.7 bottle web - python-2.7

Question

I’m trying to figure out how to rename an existing text file when I change the title of the text file. If I change the title now, it’s going to create a new text file with the new title. The "old text file" that I wanted to save with a new name still exists but with the orginal name. So i got two files with the same content.
I’m creating new articles (text files) through #route('/update/', method='POST') in my ”edit templet” where title=title, text=text. Let’s say after I have created a new article with the name(title) = ”Key” and wrote a bit in that text file. Then If I want to edit/change my ”Key” article I click on that article and present the article in #route('/wiki/',)def show_article(article):. title = article, text = text)
In this template I can change my ”Key” name(title) to ”Lock”. I’m still using the same form #route('/update/', method='POST') to post my changes.
Here is the problem, it creates a new text file instead of renaming the ”Key” article to ”Lock”.
How can I change the #route('/update/', method='POST') to make it realise that I’m working with an already existing text file and only wants to rename that file.
I have tried to use two different method=’POST’ but only gets method not allowed error all the time.
from bottle import route, run, template, request, static_file
from os import listdir
import sys
host='localhost'
#route('/static/<filname>')
def serce_static(filname):
return static_file(filname, root="static")
#route("/")
def list_articles():
files = listdir("wiki")
articles = []
for i in files:
lista = i.split('.')
word = lista[0]
lista1 = word.split('/')
articles.append(lista1[0])
return template("index", articles=articles)
#route('/wiki/<article>',)
def show_article(article):
wikifile = open('wiki/' + article + '.txt', 'r')
text = wikifile.read()
wikifile.close()
return template('page', title = article, text = text)
#route('/edit/')
def edit_form():
return template('edit')
#route('/update/', method='POST')
def update_article():
title = request.forms.title
text = request.forms.text
tx = open('wiki/' + title + '.txt', 'w')
tx.write(text)
tx.close()
return template('thanks', title=title, text=text)
run(host='localhost', port=8080, debug=True, reloader=True)

Answer 1

You can use os.replace('old_name', 'new_name'):
import os
...
tx = open('wiki/' + title + '.txt', 'w')
tx.write(text)
os.replace(tx.name, 'name_you_want.txt') # use os.replace()
tx.close()