Terminal MCP Server

import asyncio import time # ============================================================================ # EXAMPLE 1: Basic async/await - Simulating slow operations # ============================================================================ async def fetch_user_data(user_id): """Simulate fetching user data from a database""" print(f"🔄 Starting to fetch data for user {user_id}") await asyncio.sleep(2) # Simulate database delay print(f"✅ Finished fetching data for user {user_id}") return f"User data for {user_id}" async def send_email(user_id): """Simulate sending an email""" print(f"📧 Starting to send email to user {user_id}") await asyncio.sleep(1) # Simulate email delay print(f"✅ Email sent to user {user_id}") return f"Email sent to {user_id}" # ============================================================================ # EXAMPLE 2: Sequential vs Concurrent execution # ============================================================================ async def sequential_example(): """Run operations one after another (slow)""" print("\n🐌 SEQUENTIAL EXECUTION (Slow):") start_time = time.time() # These run one after another user_data = await fetch_user_data(1) # 2 seconds email_result = await send_email(1) # 1 second total_time = time.time() - start_time print(f"⏱️ Total time: {total_time:.1f} seconds") print(f"📊 Results: {user_data}, {email_result}") async def concurent_example(): """Run operations at the same time (fast)""" print("\n⚡ CONCURRENT EXECUTION (Fast):") start_time = time.time() # These run at the same time user_data, email_result = await asyncio.gather( fetch_user_data(2), # 2 seconds send_email(2) # 1 second (runs simultaneously) ) total_time = time.time() - start_time print(f"⏱️ Total time: {total_time:.1f} seconds") print(f"📊 Results: {user_data}, {email_result}") # ============================================================================ # EXAMPLE 3: Real-world scenario - Multiple API calls # ============================================================================ async def fetch_weather(city): """Simulate fetching weather data""" print(f"🌤️ Fetching weather for {city}") await asyncio.sleep(1) return f"Weather in {city}: Sunny, 25°C" async def fetch_news(category): """Simulate fetching news data""" print(f"📰 Fetching {category} news") await asyncio.sleep(1.5) return f"Latest {category} news: AI breakthrough!" async def fetch_stock_price(symbol): """Simulate fetching stock data""" print(f"📈 Fetching stock price for {symbol}") await asyncio.sleep(0.5) return f"{symbol} stock: $150.00" async def dashboard_example(): """Simulate a dashboard that needs data from multiple sources""" print("\n📊 DASHBOARD EXAMPLE - Multiple API Calls:") start_time = time.time() # Fetch all data concurrently weather, news, stock = await asyncio.gather( fetch_weather("Toronto"), fetch_news("Technology"), fetch_stock_price("AAPL") ) total_time = time.time() - start_time print(f"\n⏱️ Total time: {total_time:.1f} seconds") print(f"📊 Dashboard Data:") print(f" {weather}") print(f" {news}") print(f" {stock}") # ============================================================================ # EXAMPLE 4: Error handling with async # ============================================================================ async def risky_operation(): """Simulate an operation that might fail""" await asyncio.sleep(1) if time.time() % 2 < 1: # 50% chance of failure raise Exception("Something went wrong!") return "Operation successful!" async def error_handling_example(): """Show how to handle errors in async code""" print("\n🛡️ ERROR HANDLING EXAMPLE:") try: result = await risky_operation() print(f"✅ {result}") except Exception as e: print(f"❌ Error caught: {e}") # ============================================================================ # MAIN FUNCTION - Run all examples # ============================================================================ async def main(): """Run all the examples""" print("🚀 ASYNC/AWAIT EXAMPLES") print("=" * 50) # Run examples await sequential_example() await concurrent_example() # await dashboard_example() # await error_handling_example() print("\n🎉 All examples completed!") # ============================================================================ # HOW TO RUN THIS CODE # ============================================================================ if __name__ == "__main__": # This is how you run async code from the main script asyncio.run(main())