Lego MicroPython Failed to Run

[stan-ct]

What were you trying to do?

Wrote MicroPython on Lego SPIKE

What steps did you take to trigger the issue?

Here is the code I wrote:

from spike import PrimeHub
hub = PrimeHub()
hub.left_button.wait_until_pressed()

What did you expect to happen?

No response

What actually happened?

HUB: sync filesystems
HUB: soft reboot
raw REPL; CTRL-B to exit
>OK

�Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "spike/__init__.py", line 1, in <module>
  File "_api/__init__.py", line 1, in <module>
  File "_api/speaker.py", line 1, in <module>
  File "system/__init__.py", line 1, in <module>
  File "system/callbacks/__init__.py", line 1, in <module>
  File "util/error_handler.py", line 1, in <module>
  File "protocol/__init__.py", line 1, in <module>
  File "protocol/rpc_protocol.py", line 1, in <module>
  File "protocol/notifications.py", line 1, in <module>
RuntimeError: maximum recursion depth exceeded
�>
MicroPython v1.14-876-gfbecba865 on 2021-05-04; LEGO Technic Large Hub with STM32F413xx
Type "help()" for more information.
>>> 

Operating System Version

MacOS 12.0.1

Mu Version

1.1.0.beta.6

Other Info

No response

Editor Log

No response

[carlosperate]

That looks like it's possibly an issue with the lego spike library, have you updated the hub to the latest MicroPython release?

If you go to the REPL and type each line by hand, do you get the same error?

[stan-ct]

Sorry. There was something wrong with my code. I didn't know the module name was "hub". I considered it was "spike", the same as Lego official App "SPIKE".
Thanks for your help.

[carlosperate]

Thanks for the update, in that case we can close this issue.
Glad you were able to resolve it!

[aivarannamaa]

This error happens when you import spike without importing other dependent modules first. I think LEGO hasn't noticed this (or doesn't care), because they import hub_runtime first in the regular setup.

Assuming you don't want to load the rather heavy hub_runtime, the best work-around I know, is importing _api before importing spike.