Building a Telegram Bot with Python: A Step-by-Step Guide

1pip install python-telegram-bot
2

1import requests
2from telegram import InlineQueryResultArticle, InputTextMessageContent
3from telegram.ext import Application, CommandHandler, InlineQueryHandler
4import logging
5
6# Enable logging
7logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
8                    level=logging.INFO)
9logger = logging.getLogger(__name__)
10# Define a function to handle the /start command
11async def start(update, context):
12    await update.message.reply_text("Hello! I'm your Telegram Bot. Type /help for available commands.")
13
14# Define a function to handle the /help command
15async def help_command(update, context):
16    await update.message.reply_text("Available commands:\n"
17                              "/start - Start the bot\n"
18                              "/help - Display available commands\n"
19                              "/cat - Get a random cat picture")
20
21# Define a function to handle the /cat command
22async def cat(update, context):
23    response = requests.get("https://api.thecatapi.com/v1/images/search")
24    data = response.json()
25    cat_url = data[0]['url']
26    print(cat_url)
27    await update.message.reply_photo(cat_url)
28
29# Define a function to handle text messages
30async def echo(update, context):
31    await update.message.reply_text(update.message.text)
32
33# Define a function to handle inline queries
34def inline_query(update, context):
35    query = update.inline_query.query
36    results = [
37        InlineQueryResultArticle(
38            id=str(uuid4()),
39            title="Echo",
40            input_message_content=InputTextMessageContent(query)
41        )
42    ]
43    update.inline_query.answer(results)
44
45def main():
46    # Replace 'YOUR_API_TOKEN' with your actual API token
47    api_key = 'YOUR_API_TOKEN'
48
49    application = Application.builder().token(api_key).build()
50
51    # Register command handlers
52    application.add_handler(CommandHandler("start", start))
53    application.add_handler(CommandHandler("help", help_command))
54    application.add_handler(CommandHandler("cat", cat))
55
56    # Register an inline query handler
57    application.add_handler(InlineQueryHandler(inline_query))
58
59    # Start the Bot
60    application.run_polling(1.0)
61
62    # Run the bot until you press Ctrl-C
63    application.idle()
64
65if __name__ == '__main__':
66    main()
67

1python bot.py
2