visualstudio_py_debugger.py 文件源码

def should_block_on_frame(self, frame):
        if not should_debug_code(frame.f_code):
            return False
        # It is still possible that we're somewhere in standard library code, but that code was invoked by our
        # internal debugger machinery (e.g. socket.sendall or text encoding while tee'ing print output to VS).
        # We don't want to block on any of that, either, so walk the stack and see if we hit debugger frames
        # at some point below the non-debugger ones.
        while frame is not None:
            # There is usually going to be a debugger frame at the very bottom of the stack - the one that
            # invoked user code on this thread when starting debugging. If we reached that, then everything
            # above is user code, so we know that we do want to block here.
            if frame.f_code in DEBUG_ENTRYPOINTS:
                break
            # Otherwise, check if it's some other debugger code.
            filename = path.normcase(frame.f_code.co_filename)
            is_debugger_frame = False
            for debugger_file in DONT_DEBUG:
                if is_same_py_file(filename, debugger_file):
                    # If it is, then the frames above it on the stack that we have just walked through
                    # were for debugger internal purposes, and we do not want to block here.
                    return False
            frame = frame.f_back
        return True