Is there a Python equivalent to Ada "and then" and "or else"? (lazy evaluation)

Asked Mar 16 '20 at 09:07

Active Mar 16 '20 at 09:11

Viewed 35 times

With Ada you can use and then instead of and and or else instead of or.

In Ada, with the following example, b is only evaluated when necessary (ie if a is true) when you use the lazy evaluation operators'.

if a
    and then b
then
    expr;
end if;

Is there a Python equivalent of this?

edited Mar 16 '20 at 09:11

asked Mar 16 '20 at 09:07

txemsukr

1

You mean `if a and b` ? – khelwood Mar 16 '20 at 09:09
2

`a and b` <-- `b` won't be evaluated if `a` is falsy. The same way `a or b` <-- `b` won't be evaluated if `a` is truthy – Cid Mar 16 '20 at 09:11
1

Python `and` is already the equivalent of Ada `and then`. Likewise Python `or`, Ada `or else`. – Simon Wright Mar 16 '20 at 09:32

0 Answers0