forechan：用于Python的Go样式CSP

前锋 风格asyncio渠道。 带有泛型的完整类型，可mypy 。 受的启发。 例子 发送和接收 ch = chan ( int ) # Chan[int] await ( ch << 2 ) # or use `await ch.send(x)` two = await ([] << ch ) # or use `await ch.recv()` assert two == 2 # `ch.close()` is idempotent await ch . close () 基本的 if ch : # if `Chan[T]` is open len ( ch ) # How many items are in `ch` async with ch : # close `ch` after exiting lexical-scope async