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# test next(iter, default)
try:
next(iter([]), 42)
except TypeError: # 2-argument version not supported
print('SKIP')
raise SystemExit
print(next(iter([]), 42))
print(next(iter(range(0)), 42))
print(next((x for x in [0] if x == 1), 43))
def gen():
yield 1
yield 2
g = gen()
print(next(g, 42))
print(next(g, 43))
print(next(g, 44))
class Gen:
def __init__(self):
self.b = False
def __next__(self):
if self.b:
raise StopIteration
self.b = True
return self.b
g = Gen()
print(next(g, 44))
print(next(g, 45))
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