7 ms·
Is Python really pulling a syntactic trick? I think < is simply left associative: True < 4 is True. Similarly, I think > is right associative. (50 > 30) > 10
by enum 17y ago
Is Python really pulling a syntactic trick?
I think < is simply left associative: True < 4 is True.
Similarly, I think > is right associative. (50 > 30) > 10 does not hold, but 50 > (30 > 10) holds.
- jedi_stannis 17y agoYes it is really pulling a syntactic trick and not comparing against bools. From the docs: Comparisons can be chained arbitrarily, e.g., x < y <= z is equivalent to x < y and y <= z, except that y is evaluated only once. http://docs.python.org/reference/expressions.html#notin http://docs.python.org/reference/expressions.html#notin
- randallsquared 17y agorandall@gulch:~$ python -c 'print 1 < 2 < 4' True randall@gulch:~$ python -c 'print 1 < 5 < 4' False
- beza1e1 17y agoIn Python True==1, unfortunatelly. >>> True + True 2 Simple left-associativity would also make 3<4<2 evaluate to True.