micropython / micropython/micropython-lib

traceback.format_exc failed due to sys.exc_info not exist

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Python
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Description

Is this expected? not design to work on MCU ports ?

>>> try:
...     1/0
... except:
...     print(traceback.format_exc())
...     
...     
... 
Traceback (most recent call last):
  File "<stdin>", line 5, in <module>
  File "traceback.py", line 27, in format_exc
AttributeError: 'module' object has no attribute 'exc_info'

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Research direction

Start with traceback.py at line 27 and reproduce the reported try/except example on the affected MCU port. Check how format_exc obtains exception information and compare that with the port's available interfaces; done means the example no longer raises AttributeError and produces the expected traceback.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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