I think whatever is_blah() only should evaluate as a boolean to the correct
value, not so much that it has to a boolean. For example, if I had
def is_nonempty_list(x): # Sorry that this is somewhat contrived
if x == []:
return []
return 1
and so if I did
if is_nonempty_list([]):
print "if this prints then it's wrong"
if not is_nonempty_list([]):
print "if this doesn't print then it's wrong"
it would work as if it returned True or False.
FTR and what it's worth, in strongly-typed languages one can do:
bool is_blah();
void* is_blah(bool certificate);
which I've seen elsewhere.
Best,
Travis
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