Sampling profiler fails to display user-defined function in IDLE when started with the run command

Bug report

Bug description:

This is my simple test running IDLE at profiler startup (sudo as I'm running on a Mac, YMMV):

sudo -E ./python.exe -m profiling.sampling run -a --realtime-stats -d 99999 --live -m idlelib

As expected, I can also attach to a running IDLE session:

sudo -E ./python.exe -m profiling.sampling attach -a --realtime-stats -d 99999 --live <PID>

The two versions display things differently. If I attach to a running IDLE, define fib(), then call it with a large n (say, 200), it will run for a while before returning a result. I can see the recursive calls to fib in the display.

If I use the run command instead, I never see fib show in the display. Instead, I see something like this:

It appears all the samples in fib are credited to Misc.mainloop. I know the function is executing, given that small-n calls return quickly with the correct result, but shouldn't fib show up in the display when called with a large value for n if I use the run command to start IDLE?

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

按照描述使用递归的 fib() 调用，复现针对 idlelib 的 profiling.sampling run 命令与 attach 命令之间的差异。首先跟踪 profiling.sampling 如何处理 run 路径，并将其显示的样本与 attach 进行比较；当 fib 等用户定义的函数出现在 run 显示中，而不是被归因于 Misc.mainloop 时，即表示完成。