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This just in from the Ministry of Subtle Bugs:

def f():
print("false")
return False

result = all(func() for func in [f, f, f])
print("just comprehension", result)

only prints 'false' once before printing "just comprehension", but

result = all(list(func() for func in [f, f, f]))
print("with list", result)

prints 'false' three times before printing "with list". I understand why, but damn, this one was hard to spot.