I’ve gathered a lot of information to characterize the problem but, unfortunately, nothing to solve it yet.
The problem persists regardless of the version I have tried. It even persists if I uninstall/re-install the python_script integration.
(I uninstalled the python_script integration, and deleted its related directory, upgraded to 2021.5.5, recreated the directory and re-installed the python_script integration and … the error message persists.)
This is sufficient python code to produce the error message:
test1.py
dt1 = datetime.datetime.strptime("2021-05-20", "%Y-%m-%d").date()
dt2 = datetime.datetime.now().strftime("%Y")
Its the first line’s use of strptime that causes the error KeyError: '__import__'.
Error executing script: '__import__'
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/components/python_script/__init__.py", line 221, in execute
exec(compiled.code, restricted_globals)
File "test1.py", line 1, in <module>
KeyError: '__import__'
In contrast, the second line, the one using strftime, causes the same error message on my second instance of Home Assistant. However, there is precedent for strftime causing an error:
And as far back as 2017 where it even surprised balloob:
The odd thing is that my first instance of Home Assistant accepts neither strptime or strftime whereas my second instance accepts strptime but not strftime. How is this even possible when both use the same version of Home Assistant?
Home Assistant’s implementation of RestrictedPython appears to allow for both:
