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Guess a number (Python recipe) by Benoit
ActiveState Code (http://code.activestate.com/recipes/578962/)

This is just a little game to explain some very basic function in Python for beginner. RANDOM, Loop, Try and except...

Python, 31 lines
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__author__ = 'Benoit'
# guess a number between 1 and 100 in ten tries
import random
answer = 'yes'
while answer == "yes":
    NumToGuess = random.randint(1, 100)
    NumOfTry = 10
    print ("Try to guess a number between 1 and 100 in 10 tries")
    while NumOfTry != 0:
        try:
            x = int (input ("Please enter a number between 1 and 100"))
            if x > NumToGuess:
                print (x,"is too high")
                NumOfTry = NumOfTry - 1
                print (NumOfTry, "attempt(s) left")
                print ("")
            elif x < NumToGuess:
                print (x,"is too low")
                NumOfTry = NumOfTry - 1
                print (NumOfTry, "attempt(s) left")
                print ("")
            elif x == NumToGuess:
                print ("You Win, Congratulations!!!")
                NumOfTry = 0
        except:
            print ("Please enter a valid number. For example 1, 5 an 44 are valid numbers to input.")
    else:
        print ("The number to guess was: ", NumToGuess)
        answer = input ('Do you want to play again? (yes/no)')
else:
    print ("Thank you for playing. Goodbye")
Tags: function, game, random, sample

2 comments

Alexander Kushnarev 9 years, 5 months ago  # | flag

Actually, it is not good idea to put so big part of code in try block and catch base exception. Also python has a name convention, so local variables should be like var_name, not CamelCase.

Sander 9 years, 4 months ago  # | flag

I am a beginner at python.

This script works at its basic function, but some choices generate errors. For my learning i have made a new script which catches errors, gives the ability to continue

import random
import sys
import re
import os
from distutils.util import strtobool

def user_yes_no_query(question):
    sys.stdout.write('%s [y/n]\n' % question)
    while True:
        try:
            return strtobool(raw_input().lower())
        except ValueError:
            sys.stdout.write('Please respond with \'y\' or \'n\'.\n')


cont = 1

#y = user_yes_no_query('do you want to play a game where you guess the number from 1 to 100 in 10 tries y/n');


while cont != 0:
    os.system('clear')
    NumOfTry = 10
    y = user_yes_no_query('do you want to play a game where you guess the number from 1 to 100 in 10 tries y/n');
    if y == 1:
        print ("yes")
        NumToGuess = random.randint(1, 100)
        print ('Try to guess a number between 1 and 100 in 10 tries ')
        while NumOfTry != 0:
            try:
                x = int (input ('Please enter a number between 1 and 100  '))
                if x > NumToGuess:
                    print (x,'is too high')
                    NumOfTry = NumOfTry - 1
                    print (NumOfTry, 'attempt(s) left')
                    if NumOfTry == 0:
                        print('you re out of attemtps')
                        print ("")
                elif x < NumToGuess:
                    print (x,"is too low")
                    NumOfTry = NumOfTry - 1
                    print (NumOfTry, 'attempt(s) left')
                if NumOfTry == 0:
                    print('you re out of attempts')
                    print ("")
                elif x == NumToGuess:
                    print ('You Win, Congratulations!!!')
                    print ("")
                    NumOfTry = 0
                    raw_input('press any key to continue')
            except (NameError, KeyboardInterrupt, SyntaxError):
                print ('\n\nplease type a valid number and finish the guess!\n')
    if y == 0:
        os.system('clear')
        print ("thank you for playing")
        cont = 0