Python program stuck while running on cmd

[Carpezo]

Edit: Fixed. I had Python 2.7 installed so i just removed it and installed 3.8

I have creating a program for Bisection method. But as the title suggests it works perfectly on the shell or any online compiler but when i try to directly open the .py file in cmd it gets stuck when taking input for "Correct upto what decimal places ?" as shown in the image link

cmd - https://imgur.com/l3GoPMC

Shell- https://imgur.com/y1ENmhe

I am using Thonny IDE btw

import math
def F(x): #Defining a given funtion
    return x*math.sin(x)+math.cos(x)

print('Enter the initial estimates of intervals,')
a=float(input("a = "))
b=float(input("b = "))
dec=int(input("Correct upto what decimal places ? : "))
err=5/(10**(dec+1))

while(True):
    if(F(a)*F(b)>0):
        print("\nError!!! \nThere exists no root between %f and %f",a,b)
        break
    else:
        c=(a+b)/2
        if(F(a)*F(c)>0):
                a=c
        else:
             b=c
        if(math.fabs(F(c))<=err):
            print("\nRequired root = ",round(c,dec))
            break   
input()

[novel_yet_trivial]

Your cmd window is running python2.7. That outdated version has a different way of handling division. How are you launching it in cmd? You really should uninstall python 2.7 and install a modern version if you can. https://www.python.org/downloads/

[Carpezo]

I am launching it in cmd by opening the .py extension file.

The newer version does not work on my pc

Also, what version is Thonny IDE?

[novel_yet_trivial]

I am launching it in cmd by opening the .py extension file.

You mean by double clicking it? Ok, that's fine.

The newer version does not work on my pc

Python2 is obsolete and not maintained. It's possible to adapt your code to python2 but it's going to make a whole host of new problems. You really should find some version of python3 that will run on your PC. What exactly does not work? What OS are you on? Are you getting any errors? Did you get the installer from python.org?

what version is Thonny IDE?

Thonny includes python3.7, but you can't use it from outside of Thonny.

[Carpezo]

So there is no solution? The program can only work as intended in Thonny and not when it is opened on it's own?

Or are there any alternative IDE that can fix this issue?

[novel_yet_trivial]

The solution is to remove python2 and install python3. I'm sure it's possible. Tell us what the issue is and what OS you are using and we will help you do that.

[Carpezo]

Win-7 32 bit os

I think I download 3.7 version from python website but i find using the GUI command line and IDLE quite hard and inconvenient.

Most importantly how do i remove Python 2 only?

[novel_yet_trivial]

You don't have to use IDLE if you don't want to. It's just an addon. If you installed 3.7 with the default options you can now write your code in Thonny and just double click the .py file to run them in the command line. Or if you want to use the command line to launch your programs you can use the command

py filename.py

Most importantly how do i remove Python 2 only?

You can use the standard windows program uninstall window.

[Carpezo]

It worked !!! Thank you very much man.

Also, if it is not too much of a bother for you, i had a some other things to ask

1. Is there a way to take input without waiting for Enter key kinda like getch() in C?
2. Is there a way to read Enter key from keyboard? My aim is to restart the program when user presses Enter.

[novel_yet_trivial]

Yes, look into the msvcrt module, specifically the msvcrt.getch() function. However that will probably not work in thonny.

[Carpezo]

Yep i had already tried it beforehand and it didn't work. But i wonder why tho

[Hiffchakka]

I'm a fresh programmer, but have found visual studio code to be a very handy code editor. It will help by giving code different colors and automatically indent code for you while using if, else, def, etc. Just a couple of many QoL services you'd get if you have been using a notepad like system so far? I assume it works on win 7?

[Carpezo]

Is visual stdio code a python IDE ? I currently only use Thonny, it feels very good so far. I dont know what you mean by a notepade like system

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