____________________ TestSolvers.test_fixed_vars_3_0_gurobi ____________________

a = (<pyomo.contrib.solver.tests.solvers.test_solvers.TestSolvers testMethod=test_fixed_vars_3_0_gurobi>,)
kw = {}

    @wraps(func)
    def standalone_func(*a, **kw):
>       return func(*(a + p.args), **p.kwargs, **kw)

/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/parameterized/parameterized.py:620: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
pyomo/contrib/solver/tests/solvers/test_solvers.py:751: in test_fixed_vars_3
    if not opt.available():
pyomo/contrib/solver/gurobi.py:268: in available
    return self._check_license()
pyomo/contrib/solver/gurobi.py:275: in _check_license
    with capture_output(capture_fd=True):
pyomo/common/tee.py:239: in __enter__
    self.fd_redirect[1].__enter__()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <pyomo.common.tee.redirect_fd object at 0x147c57da0>

    def __enter__(self):
        if self.std:
            # important: flush the current file buffer when redirecting
            getattr(sys, self.std).flush()
            self.original_file = getattr(sys, self.std)
        # Duplicate the original standard file descriptor(file
        # descriptor 1 or 2) to a different file descriptor number
        self.original_fd = os.dup(self.fd)
    
        # Open a file descriptor pointing to the new file
        if isinstance(self.target, int):
            out_fd = self.target
        else:
            out_fd = os.open(self.target, os.O_WRONLY)
    
        # Duplicate the file descriptor for the opened file, closing and
        # overwriting the value for stdout (file descriptor 1).  Only
        # make the new FD inheritable if it is stdout/stderr
        os.dup2(out_fd, self.fd, inheritable=bool(self.std))
    
        # We no longer need this original file descriptor
        if out_fd is not self.target:
            os.close(out_fd)
    
        if self.std:
            if self.synchronize:
                # Cause Python's stdout to point to our new file
                fd = self.fd
            else:
                # IF we are not synchronizing the std file object with
                # the redirected file descriptor, and IF the current
                # file object is pointing to the original file
                # descriptor that we just redirected, then we want to
                # retarget the std file to the original (duplicated)
                # target file descriptor.  This allows, e.g. Python to
                # still write to stdout when we redirect fd=1 to
                # /dev/null
                try:
>                   old_std_fd = getattr(sys, self.std).fileno()
E                   ValueError: I/O operation on closed file

pyomo/common/tee.py:155: ValueError