boolean OR gotcha

[1x7y2z9]

True

Yes, this is explained in the docs:
The expression x or y first evaluates x; if x is true, its value is
returned; otherwise, y is evaluated and the resulting value is
returned.

Another one (also explainable):True
# Above is same as (operator precedence):True
# Here is something different:False

 

[Jan Kaliszewski]

Another one (also explainable):
True
# Above is same as (operator precedence):
True
# Here is something different:
False

I don't see any problem here.

The last is ok: None != 0.

*j

 

[1x7y2z9]

Did not intend that there was a problem.
Just a gotcha or a fun little titbit ... maybe.