Minecraft Name Change

import requests
import string
import time

email = "[email protected]"
password = "test123"
new_name = "N/A"

login_url = "https://account.mojang.com/login"
name_url = "https://account.mojang.com/me/renameProfile/"

def do_login(user,password):
    global name_url
    print("Attempting login")
    page = session.get(login_url)
    page_text = page.text
    auth_pos = page_text.find('name="authenticityToken" value="')
    auth_token = page_text[auth_pos+len('name="authenticityToken value="'):len(page_text)]
    auth_token = auth_token.split('"')[1]
    print("Got auth token: " + str(auth_token))
    login_data = {"authenticityToken":auth_token,"username":user,"password":password}
    time.sleep(1)
    page = session.post(login_url,data=login_data)
    page_text = page.text
    uuid_pos = page_text.find("/me/renameProfile/")
    uuid = page_text[uuid_pos+len("/me/renameProfile/"):len(page_text)]
    uuid = uuid.split('"')[0]
    if not all(c in string.hexdigits for c in uuid):
        print("UUID/Login fail!")
        return False
    name_url = name_url + uuid
    print("UUID is " + str(uuid))
    time.sleep(1)
    session.get(name_url)
    print("Login success!")
    name_data = {"authenticityToken":auth_token,"newName":new_name,"password":password}
    return name_data

session = requests.session()
name_data = do_login(email,password)
print("Changing name to " + new_name)
result = session.post(name_url, name_data).text
if result == "Name changed.":
    print("Name change successful!")
else:
    print("Name change may have failed.")
    print(result)