Creating a Calculator Interface Window on Android with PySimpleGUI in Python 3.

Introduction:
Python is a versatile and powerful programming language that can be used to create a wide variety of applications. PySimpleGUI is a Python library that makes it easy to create graphical user interfaces (GUIs) for your Python applications. In this tutorial, we will walk you through how to create a calculator interface window using PySimpleGUI in Python 3 for Android.

Install PySimpleGUI:
First, you will need to install PySimpleGUI on your Android device. You can do this by opening a terminal window on your Android device and typing the following command:

pip install PySimpleGUI

Create a Python script:
Next, you will need to create a Python script that uses PySimpleGUI to create a calculator interface window. You can do this by opening a text editor on your Android device and entering the following code:

import PySimpleGUI as sg

layout = [
    [sg.Input(size=(10, 1), key='display')],
    [sg.Button('7'), sg.Button('8'), sg.Button('9'), sg.Button('/')],
    [sg.Button('4'), sg.Button('5'), sg.Button('6'), sg.Button('*')],
    [sg.Button('1'), sg.Button('2'), sg.Button('3'), sg.Button('-')],
    [sg.Button('C'), sg.Button('0'), sg.Button('='), sg.Button('+')]
]

window = sg.Window('Calculator', layout)

def calculate(values):
    try:
        return str(eval(''.join(values)))
    except:
        return 'Error'

current = []

while True:
    event, values = window.read()

    if event in (None, 'Exit'):
        break
    elif event == 'C':
        current = []
    elif event == '=':
        result = calculate(current)
        window['display'].update(result)
        current = [result]
    else:
        current.append(event)
        window['display'].update(''.join(current))

window.close()

Run the Python script:
To run the Python script on your Android device, you will need to open a terminal window and navigate to the directory where you saved the script. Once you are in the correct directory, you can run the script by typing the following command:

python script_name.py

Replace "script_name.py" with the name of the Python script you created. This will launch the calculator interface window created using PySimpleGUI.

Conclusion:
In this tutorial, we walked you through how to create a calculator interface window using PySimpleGUI in Python 3 for Android. PySimpleGUI is a powerful tool that makes it easy to create graphical user interfaces for your Python applications. By following the steps outlined in this tutorial, you can create a wide variety of GUIs for your Python applications on your Android device.