requirements.txt

# Telegram Bot Library
python-telegram-bot[httpx]>=21.0,<22.0 # PTB v21 is recommended

# HTTPX (explicitly, for Limits and direct use)
httpx>=0.25.0,<0.28.0

# ASGI Framework (Core)
starlette>=0.35.0,<0.38.0 # Ensure compatibility with PTB/HTTPX async nature

# HTTP Requests Library (for sync fallback or specific APIs if needed)
# requests>=2.28,<2.33 # Keep if any sync code still uses it, otherwise optional

# Web Scraping (HTML Parsing)
beautifulsoup4>=4.11,<4.13
lxml>=4.9.0,<6.0.0 # Often faster parser for BS4, good practice

# YouTube Transcript Library
youtube-transcript-api>=0.6,<0.7

# Apify Client (Optional)
apify-client>=1.0,<1.3 # If using Apify

# WSGI/ASGI Servers & Adapter
gunicorn>=21.0,<23.0
uvicorn[standard]>=0.27.0,<0.30.0 # Use standard for websockets, http/2 etc.

# Async Utilities / Dependencies
anyio>=3.6,<5.0 # Explicitly add anyio, often helps resolve conflicts
asgiref>=3.5,<3.9

# Retry Logic
tenacity>=8.0,<9.0

# Optional: For better encoding detection if needed
# chardet>=4.0.0,<6.0.0