run.py 文件源码

def import_optional():
    """Safe module import"""
    success = AttributeDict()
    try:
        gi.require_version('Gst', '1.0')
        from gi.repository import Gst  # noqa: F401
        success.gstreamer = True
    except Exception:
        success.gstreamer = False
        logger.warning("Fail to import Gstreamer module")

    try:
        from PIL import Image  # noqa: F401
        success.pillow = True
    except Exception:
        success.pillow = False
        logger.warning("Fail to import Pillow module")

    return success