Пример #1
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def test_isvar():
    assert not isvar(3)
    assert isvar(var(3))
Пример #2
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def test_var():
    assert var(1) == var(1)
    assert var() != var()
Пример #3
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def test_var_inputs():
    assert var(1) == var(1)
    assert var() != var()