Dargor questions

• How does asyncio's event loop know when an awaitable resource is ready?
• It's obligatory to check more than one time visited nodes when using Dijkstra's algorithm?
• Strange inline assignment
• Python class and global vs local variables [duplicate]
• Handle multiple questions for Telegram bot in python
• Pipe a lot of files to stdin, extract first columns, then combine those in a new file
• Function pointers, arrays and lvalues in C

Dargor answers