topic Re: Random number of a Random number in Python Questions

Random number of a Random number

JohnnyMonds — Sun, 26 Apr 2020 00:43:12 GMT

Ok, let me see if I can get this down for every one to understand...

I am doing a guessing game in python/PyQt5...

I am trying to put in a hint button. So I am trying to generate a random number of a random number, but I don't know what function to use.

so the random number is generated and if you hit the hint button I want the second random number to be within +/- (N) of the initial random number

import random
import sys

from PyQt5.QtWidgets import *

from frmguess import Ui_frmguess

# Declare global variables to store random number and times guessed
times_guessed = 0
num_to_guess = random.randrange(1, 101) #Gives random number
random2 = random.randrange(5, 5, num_to_guess) ????what function to use????

# Create main window (inherits from the base QT widget)
class Mainwindow(QWidget):
def __init__(self):
"""Initialization code for when mainwindow object is created"""
super().__init__()
# Call UI set up in QtDesignerpyuic
self.ui = Ui_frmguess()
self.ui.setupUi(self)
# Connect guess button click signal to guess_click slot function
self.ui.guessbutton.clicked.connect(self.guess_click)
# Reset times guessed label
self.ui.timesguesslabel.setText(str(times_guessed))
# Connect hint button click signal to hint_button
self.ui.hint_button.clicked.connect(self.hint_click)
# Show the form
self.show()
def hint_click(self):
"""What to do when user clicks the hint button"""
# Get access to random number generated
global num_to_guess
global random2
# Tell user is plus or minus another random number
hint, okPressed = QMessageBox.question(self, "Your hint is...",
"Number is plus or minus five " + str(random2),
QMessageBox.Ok)

Any leads would be great

Re: Random number of a Random number

JoshuaBixby — Sun, 26 Apr 2020 15:42:07 GMT

You are using the right method, just not using it correctly:

random.randrange(num_to_guess-5, num_to_guess+5)‍

Re: Random number of a Random number

JohnnyMonds — Sun, 26 Apr 2020 16:22:26 GMT

Ok, I tried that way, the results were not what I wanted. Sorry I didn't explain further, every time I user hits the 'hint' button I wanted that random number to be random also. Let's say my first random number to guess (R1) is 31. I want the hint button to be +/- 5 of 31 but to be random also every time button is hit (R2).

Joshua, your way just gives the same number over and over for R2.

I did fumble through it late last night thanks to pizza and beer. I have put the R2 code at the beginning and in the loop of the hint button and it randomizes every time it is hit but stays within 5 of R1 and the code looks like this

random2 = num_to_guess + random.randrange(-5, 6)

Thank you Joshua for your reply, it was much appreciated. I realized this morning I didn't totally explain my desire correctly.

Re: Random number of a Random number

JoshuaBixby — Sun, 12 Dec 2021 00:59:19 GMT

Something is off then if the R2 is returning the same value every time. The following shows that calling the second function multiple times generates different numbers each time:

>>> import random
>>> num_to_guess = random.randrange(1, 101)
>>> num_to_guess
53
>>> random.randrange(num_to_guess-5, num_to_guess+5)
56
>>> for i in range(6):
...     random.randrange(num_to_guess-5, num_to_guess+5)
... 
51
53
55
52
55
54
>>>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Random number of a Random number

JohnnyMonds — Sun, 26 Apr 2020 16:39:09 GMT

I believe the biggest problem I had was the R2 was not in my loop, but it is fixed now. Thank you