@pytest.yield_fixture()
def to_be_deleted(workon_home):
    envname = 'to_be_deleted'
    invoke('new', envname, '-d')
    yield envname
    assert not (envname / workon_home).exists()
dataset/ETHPy150Open berdario/pew/tests/test_rmvirtualenv.py/to_be_deleted/swapped operands of `/`