CODEWITHSUNDEEP
pythonvariablesdebuggingglobal
HiighQ
HiighQ

Reputation: 55

Returning a value from a function to a global variable

Greetings fellow Coders! Quick disclaimer i'm new to the world of coding and currently learning Python, happy for all the infos and help i get!

So i'm trying to code the mastermind game if your are not familiar with it here is a wikipedia arcticle: Text

Im trying to work with global variables, but everytime the global variable is used in a function it dosent return it into the global variable the variable just sets back to its original value.

If u need more info from me please let me know! looking forward to hearing from you.

import random
colors = "YORPGB"
global secret  
global round
global hits
global close 

def gen_random_secret():
    secret = ""
    for i in range(4):
        n = random.randrange(6)
        secret += colors[n]
    return secret

def get_guess(force_valid_input):
    while True:
        guess = input(f"Available letters: {colors}\nPut in a 4-letter Word with the available letters, there can be duplicates! ").upper()
        
        if len(guess) ==4:
            return guess
        else:
            if not force_valid_input:
                return None
            print("Wrong Input try again!")

def check_guess(guess,secret):
    hits = 0
    close = 0
    for i in range(4):
        if guess[i] == secret[i]:
            hits += 1
    
    for color in colors:
        close += min(secret.count(color),guess.count(color))
    close = close - hits
    
    return hits, close

def start_game():
    print("Welcome to the Mastermind game!\nGenerating random code...")
    round = 1
    history = []
    hits = 0
    close = 0
    secret = gen_random_secret()
    while round<=12:
        guess = get_guess(True)
        check_guess(guess,secret)
        
        print(f"Hits: {hits} Close: {close}\n")
        if hits == 4:
            break
        round += 1
        history.append((guess,hits,close))
    print()
    for row in history:
        for color in row[0]:
            print(f" {color}", end="")
        print(f" | {row[1]} {row[2]}")
    print()
    if hits == 4:
        print(f"Congratz u guessed it the code was: {secret}")
    else:
        print(f"You ran out off attempts, you lose bitch!\n the secret Word was {secret}")

start_game()

Upvotes: 0

Views: 1895

Answers (1)

Eli Harold
Eli Harold

Reputation: 2301

You must call global within the function to let the function know to use the global variable.

For example:

def gen_random_secret():
    global secret
    secret = ""
    for i in range(4):
        n = random.randrange(6)
        secret += colors[n]
    return secret

Instead of:

global secret
def gen_random_secret():
    secret = ""
    for i in range(4):
        n = random.randrange(6)
        secret += colors[n]
    return secret

Upvotes: 1

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