Building a Telegram Bot Payment System with Python (Complete Guide)

What We're Building A fully functional e-commerce bot that: Displays product catalog with categories Accepts Telegram Stars as payment Delivers digital files instantly Tracks purchases in SQLite Prerequisites Python 3.9+ pyTelegramBotAPI library Bot token from @botfather pip install pyTelegramBotAPI Step 1: Bot Setup import telebot from telebot.types import ( InlineKeyboardMarkup , InlineKeyboardButton , LabeledPrice ) import sqlite3 import os TOKEN = os . environ . get ( ' BOT_TOKEN ' ) bot = telebot . TeleBot ( TOKEN ) Step 2: Product Catalog CATEGORIES = { ' templates ' : ' Code Templates ' , ' notion ' : ' Notion Systems ' , ' career ' : ' Career Guides ' , ' ai ' : ' AI Toolkits ' } PRODUCTS = { ' starter_kit ' : { ' name ' : ' Starter Kit Pro ' , ' description ' : ' Complete project templates with MVVM, networking, and more ' , ' stars ' : 75 , ' category ' : ' templates ' , ' file ' : ' products/starter_kit.pdf ' }, ' notion_brain ' : { ' name ' : ' Second Brain System ' , ' des