math_quiz_v3

# -------------------------------------------------------------------
# Programming 103: Saving and Structuring Data  Raspberry Pi Foundation
# Section 1.6
# Math game
# -------------------------------------------------------------------

# Collect all questions in a list.
# In this way the list can be changed without impacting the rest of the program
# A better way would be to get the questions and answers from external files
questions = [
 "What is the product of 2x2x2",
 "What is the value of 2^2^2 (where ^ is the exponentiation operator)",
 "What is the square root of 144",
 "What is the sum of the first 500 natural numbers (use Gauss' method)"
]
#
# Collect all answers in a list
answers = [
 8,
 16,
 12,
 125250
]

print("Welcome to the Maths Quiz\n")

# initialize variables
highscoreFile = "math_quiz_highscore.txt"

# Try to get the previous highscore from file
try:
    with open(highscoreFile, "r") as f:
        highscore = f.read()
        highscore = int(highscore)
except FileNotFoundError:
    print("Creating a new " + highscoreFile + " file")
    f = open(highscoreFile, "w")
    f.write("0")
    f.close()
    highscore = 0

with open(highscoreFile, "r") as f:
    highscore = f.read()
    highscore = int(highscore)
f.close()

score = 0                       # The current score for this  run of the game
nquestions = len(questions)     # Number of questions in the list

print("Your previous highest score was " + str(highscore))
print("Can you answer",nquestions,"questions and improve your score?")

# Now loop through all the questions
for q in range(nquestions):         # The q is used as the index of the questions and answers lists
    print("Question " + str(q+1) + ": " + questions[q] + "?")
    answer = int(input("Your answer is:>> "))
    if answer == answers[q]:
        print("Correct")
        score = score + 1
    else:
        print("Incorrect, the answer is: ",answers[q])
    print("Your score is ", score)


if score >= highscore:          # if the score of this run is higher than the saved score it replaces it
    highscore = score
    with open(highscoreFile, "w") as f:
        f.write(str(highscore))
        f.close()
else:
    print("Better luck next time")

print("Your highest score is " + str(highscore))