How can I capture return value with Python timeit module?

For Python 3.5 you can override the value of timeit.template

timeit.template = """
def inner(_it, _timer{init}):
    {setup}
    _t0 = _timer()
    for _i in _it:
        retval = {stmt}
    _t1 = _timer()
    return _t1 - _t0, retval
"""

unutbu’s answer works for python 3.4 but not 3.5 as the _template_func function appears to have been removed in 3.5