tracing.py 文件源码

def trace_calls(
    logger: CallTraceLogger,
    code_filter: Optional[CodeFilter] = None,
    sample_rate: Optional[int] = None,
) -> Iterator[None]:
    """Enable call tracing for a block of code"""
    old_trace = sys.getprofile()
    sys.setprofile(CallTracer(logger, code_filter, sample_rate))
    try:
        yield
    finally:
        sys.setprofile(old_trace)
        logger.flush()