visualstudio_py_debugger.py 文件源码

def handle_exception(self, frame, arg):
        if self.stepping == STEPPING_ATTACH_BREAK:
            self.block_maybe_attach()

        if not DETACHED and should_debug_code(frame.f_code):
            break_type = BREAK_ON.should_break(self, *arg)
            if break_type:
                update_all_thread_stacks(self)
                self.block(lambda: report_exception(frame, arg, self.id, break_type))

        # forward call to previous trace function, if any, updating the current trace function
        # with a new one if available
        old_trace_func = self.prev_trace_func
        if old_trace_func is not None:
            self.prev_trace_func = old_trace_func(frame, 'exception', arg)

        return self.trace_func