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native_gen.py

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# test for native generators

# simple generator with yield and return

@micropython.native

def gen1(x):

yield x

yield x + 1

return x + 2

g = gen1(3)

print(next(g))

print(next(g))

try:

next(g)

except StopIteration as e:

print(e.args[0])

# using yield from

@micropython.native

def gen2(x):

yield from range(x)

print(list(gen2(3)))

# catching an exception from .throw()

@micropython.native

def gen3():

try:

yield 1

yield 2

except Exception as er:

print("caught", repr(er))

yield 3

g = gen3()

print(next(g))

print(g.throw(ValueError(42)))

# responding to .close()

@micropython.native

def gen4():

try:

yield 1

except:

print("raising GeneratorExit")

raise GeneratorExit

g = gen4()

print(next(g))

print(g.close())