python3-sniffio: python3-sniffio (detect which async library is current running) python3-sniffio: python3-sniffio: sniffio is a tiny package whose only purpose is to let you detect python3-sniffio: which async library your code is running under. python3-sniffio: python3-sniffio: python3-sniffio: python3-sniffio: python3-sniffio: python3-sniffio: python3-sniffio: