Guess The Number - My first proper Python program as I learn the language. If any Python experts can offer a refactored version, that would be great.

number_guess.py

#!/usr/bin/python
import random

print ("A Simple find the number game.")

score_table = {}

def get_high_scores():
    high_score = 0
    high_score_holder = None
    f = open('highscores.txt', 'r')
    for line in f:
        score_entry = line.split()
        if score_entry[1] > high_score:
            high_score_holder = score_entry[0]
            high_score = score_entry[1]
        score_table.update({score_entry[0]:score_entry[1]})
    f.close()
    print("High scores table read.")
    return (high_score_holder,high_score)

def update_high_score_table(name, tries):
    score_table.update({name:str(tries)})
    f = open('highscores.txt', 'w')
    for name, score in score_table.iteritems():
        f.write(name + ' ' + score + "\n")
    print("Score table file written.")

high_score  = get_high_scores()
if score_table:
    print("%s is the current champion with just %s tries" %(high_score[0],high_score[1]))

tries = 9999
name = raw_input("Please enter your name >")
if name in score_table:
    tries = int(score_table.get(name))
    print("Welcome back, %s. Your best is %s tries." %(name, tries))

secret_number = random.randint(1, 100)
print ("I have thought of a number between 1 and 100. Can you guess it?")

guessed = False
number_of_trys = 1
while guessed is False:
    my_guess = int(raw_input("Enter your guess >"))
    if my_guess == secret_number:
        print ("Correct! You got it in %i tries!" %number_of_trys)
        guessed = True
    else:
        higher_lower = "lower"
        if my_guess < secret_number:
            higher_lower = "higher"
        print("Sorry, incorrect. Try %s." % higher_lower)
        number_of_trys += 1

update_score_table = False
if high_score[1] == 0 or number_of_trys < int(high_score[1]):
    print("Congratulations %s! You are the new champion!" %(name))
    update_score_table = True
elif number_of_trys < tries:
    print("Congratulations %s! You have a new personal best of %s tries!" %(name, number_of_trys))
    update_score_table = True

if update_score_table:
    update_high_score_table(name, number_of_trys)

print("Goodbye.")