trivia.py

#Trivia chellange
#This game reads a plain text file and asks you questions

import sys, pickle

def open_file(file_name, mode):
    """Opens a file"""
    try:
        file = open(file_name, mode)
    except IOError as e:
        print("Unable to open the text file", file_name, "Ending program.\n",e)
        input("\n\nPress the enter key to exit...")
        sys.exit()
    else:
        return file


def ask_question(question):
    answer = None
    while answer not in ("y", "n"):
        answer = input(question).lower()
    return answer


def next_line(file):
    """Returns next line from the trivia file, formatted"""
    line = file.readline()
    line = line.replace("/", "\n")
    return line

def next_block(file):
    """Returns next block of data from the rivia file"""
    category = next_line(file)

    question = next_line(file)

    answers = []
    for i in range(4):
        answers.append(next_line(file))

    correct = next_line(file)
    if correct:
        correct = correct[0]

    explanation = next_line(file)

    try:
        points = int(next_line(file))
    except ValueError:
        points = ""

    return category, question, answers, correct, explanation, points


def welcome(title):
    """Welcomes the player and gets his/her name"""
    print("\t\tWelcome to Trivia Challenge!\n")
    print("\t\t",title,"\n")


def read_scores(filename):
    try:
        with open(filename, 'rb') as scores_file:
            return pickle.load(scores_file)
    except (EOFError, FileNotFoundError):
        return []


def update_scores(filename, name, score):
    scores = read_scores(filename)
    scores.append((name, score))

    with open(filename, 'wb') as scores_file:
        pickle.dump(scores, scores_file)

    return scores


def main():
    file = open_file("trivia.txt", "r")
    title = next_line(file)
    welcome(title)
    score = 0
    name = input("\n\nWhat is your name?: ")

    # getting the first block
    category, question, answers, correct, explanation, points = next_block(file)
    while category:
        #ask question
        print(category)
        print(question)
        for i in range(4):
            print("\t", i+1, "-", answers[i])
        #getting the answer
        answer = input("What's your answer?: ")
        if answer == correct:
            print("\nRight!", end = " ")
            score+= points
        else:
            print("\nWrong.", end = " ")
        print(explanation)
        print("Score:", score, "\n\n")
        category, question, answers, correct, explanation, points = next_block(file)
    file.close()

    scores = update_scores('scores.pickle', name, score)

    print("That was the last question!")
    print("You're final score is", score)
    if ask_question("Would you like to see High Scores?: ") == "y":
        for name, score in scores:
            print(name, score)

main()
input("\n\nPress the enter key to exit...")