# Import the required modules
import kivy
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.core.text import Label as CoreLabel
from kivy.config import Config

# Import the PyBluez Bluetooth library
import bluetooth

# Define the Bluetooth device address to auto-connect to
DEVICE_ADDRESS = "00:00:00:00:00:00"

# Define the search method for devices
def search_devices():
    # Search for all nearby Bluetooth devices
    nearby_devices = bluetooth.discover_devices()
    # Return the list of nearby devices
    return nearby_devices

# Define the connect method for a Bluetooth device
def connect_device(device_address):
    # Connect to the Bluetooth device
    sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
    sock.connect((device_address, 1))
    # Return the socket
    return sock

# Define the main app class
class BluetoothApp(App):
    def build(self):
        # Create a layout
        layout = BoxLayout(orientation='vertical')
        # Create a label and button for searching for devices
        label = Label(text='Bluetooth Devices')
        search_button = Button(text='Search', on_release=self.search_devices)
        # Create a button for auto-connecting to the designated device
        auto_connect_button = Button(text='Auto-Connect', on_release=self.auto_connect)
        # Add the label, search button, and auto-connect button to the layout
        layout.add_widget(label)
        layout.add_widget(search_button)
        layout.add_widget(auto_connect_button)
        # Return the layout
        return layout
    
    # Define the function that runs when the search button is pressed
    def search_devices(self, instance):
        # Get the list of nearby Bluetooth devices
        nearby_devices = search_devices()
        # Create a popup window to show the list of devices
        popup = Popup(title='Bluetooth Devices', content=Label(text='\n'.join(nearby_devices)), size_hint=(0.5, 0.5))
        popup.open()
        
    # Define the function that runs when the auto-connect button is pressed
    def auto_connect(self, instance):
        # Connect to the designated Bluetooth device
        sock = connect_device(DEVICE_ADDRESS)
        # Create a popup window to show the connection status
        popup = Popup(title='Connection Status', content=Label(text='Connected to ' + DEVICE_ADDRESS), size_hint=(0.5, 0.5))
        popup.open()

# Set the font size for accessibility
Config.set('graphics', 'font_size', '20')
# Run the app
if __name__ == '__main__':
    BluetoothApp().run()
 

Python Online Compiler

Write, Run & Share Python code online using OneCompiler's Python online compiler for free. It's one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler's Python editor is easy and fast. The editor shows sample boilerplate code when you choose language as Python or Python2 and start coding.

Taking inputs (stdin)

OneCompiler's python online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample python program which takes name as input and print your name with hello.

import sys
name = sys.stdin.readline()
print("Hello "+ name)

About Python

Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It's is highly productive and efficient making it a very popular language.

Tutorial & Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition IF-ELSE is used.

if conditional-expression
    #code
elif conditional-expression
    #code
else:
    #code

Note:

Indentation is very important in Python, make sure the indentation is followed correctly

2. For:

For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.

Example:

mylist=("Iphone","Pixel","Samsung")
for i in mylist:
    print(i)

3. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while condition  
    #code 

Collections

There are four types of collections in Python.

1. List:

List is a collection which is ordered and can be changed. Lists are specified in square brackets.

Example:

mylist=["iPhone","Pixel","Samsung"]
print(mylist)

2. Tuple:

Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.

Example:

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)

Below throws an error if you assign another value to tuple again.

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
myTuple[1]="onePlus"
print(myTuple)

3. Set:

Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.

Example:

myset = {"iPhone","Pixel","Samsung"}
print(myset)

4. Dictionary:

Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key - value pairs.

Example:

mydict = {
    "brand" :"iPhone",
    "model": "iPhone 11"
}
print(mydict)

Supported Libraries

Following are the libraries supported by OneCompiler's Python compiler

NameDescription
NumPyNumPy python library helps users to work on arrays with ease
SciPySciPy is a scientific computation library which depends on NumPy for convenient and fast N-dimensional array manipulation
SKLearn/Scikit-learnScikit-learn or Scikit-learn is the most useful library for machine learning in Python
PandasPandas is the most efficient Python library for data manipulation and analysis
DOcplexDOcplex is IBM Decision Optimization CPLEX Modeling for Python, is a library composed of Mathematical Programming Modeling and Constraint Programming Modeling