Does Python have the Elvis operator?
Yes
Python does have the elvis operator. It is the conditional or operator:
x = f() or g()f() is evaluated. If truthy, then x is assigned the value of f(), else x is assigned the value of g().
Reference: https://en.wikipedia.org/wiki/Elvis_operator#Analogous_use_of_the_short-circuiting_OR_operator
NB Python does not have the null-coalescing operator defined by:
a if a is not None else bThe or operator in a or b checks the truthiness of a which is False when a==0 or len(a)==0 or other similar situations. See What is Truthy and Falsy
There is a proposal to add such operators PEP 505
>>> a = [1,2,3]>>> b = [4,5,6]>>> c = [4]>>> a + (b,c)[b>c][1, 2, 3, 4]>>> a + (b,c)[b<c][1, 2, 3, 4, 5, 6]>>> Python elvis operation is
(testIsFalse, testIsTrue)[test]The Java equivalent is
test ? testIsTrue:testIsFalse