def _makePipe():
    """
    Create a pipe, and return the two FDs wrapped in L{_FDHolders}.
    """
    r, w = pipe()
    return (_FDHolder(r), _FDHolder(w))

    Create a pipe, and return the two FDs wrapped in L{_FDHolders}.
    
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_sendmsg.py