import adafruit_circuitplayground.express from an imported file fails #2437
Description
With a file testme.py which consists of the single import statement:
import adafruit_circuitplayground.express
I get a maximum recursion depth error:
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Adafruit CircuitPython 5.0.0-beta.0 on 2019-11-19; Adafruit CircuitPlayground Express with samd21g18
>>> import testme
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "testme.py", line 1, in <module>
File "adafruit_circuitplayground/express.py", line 699, in <module>
File "adafruit_circuitplayground/express.py", line 127, in __init__
File "adafruit_lis3dh.py", line 321, in __init__
File "adafruit_lis3dh.py", line 100, in __init__
File "adafruit_lis3dh.py", line 126, in data_rate
File "adafruit_lis3dh.py", line 300, in _read_register_byte
File "adafruit_lis3dh.py", line 325, in _read_register
RuntimeError: maximum recursion depth exceeded
>>>
I get this on the latest version 4.1.2 and version 5.0.0-beta.2 as well, although those don't dump the stack trace, but crash and then complain on the next reboot that the stack was corrupted.
This is with the lib directory empty.
Doing the same import adafruit_circuitplayground.express from the command line has no problems.
Doing that import from the command line and then import testme also works fine.
I tried this on two different Circuit Playground Express hardware units.