rustpython 0.1.0

A python interpreter written in rust.
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assert None is None

y = None
x = None
assert x is y

def none():
    pass

def none2():
    return None

assert none() is none()
assert none() is x

assert none() is none2()

assert str(None) == 'None'
assert repr(None) == 'None'
assert type(None)() is None