openmdao/core/total_jac.py
def _update_rel_systems(all_rel_systems, rel_systems):
    """
    Combine all relevant systems in those cases where we have multiple input variables involved.

    Parameters
    ----------
    all_rel_systems : set
        Current set of all relevant system names.
    rel_systems : set
        Set of relevant system names for the latest iteration.
    """
    if all_rel_systems is _contains_all or rel_systems is _contains_all:
        all_rel_systems = _contains_all
    else:
        all_rel_systems.update(rel_systems)

    Combine all relevant systems in those cases where we have multiple input variables involved.

    Parameters
    ----------
    all_rel_systems : set
        Current set of all relevant system names.
    rel_systems : set
        Set of relevant system names for the latest iteration.
    
Combine all relevant systems in those cases where we have multiple input variables involved.
Parameters

all_rel_systems : set
Current set of all relevant system names.
rel_systems : set
Set of relevant system names for the latest iteration.
Combine all relevant systems in those cases where we have multiple input variables involved . Parameters all_rel_systems : set Current set of all relevant system names . rel_systems : set Set of relevant system names for the latest iteration .
def _update_rel_systems(all_rel_systems, rel_systems):
    if all_rel_systems is _contains_all or rel_systems is _contains_all:
        all_rel_systems = _contains_all
    else:
        all_rel_systems.update(rel_systems)
def _update_rel_systems ( all_rel_systems , rel_systems ) : if all_rel_systems is _contains_all or rel_systems is _contains_all : all_rel_systems = _contains_all else : all_rel_systems . update ( rel_systems )
Combine all relevant systems in those cases where we have multiple input variables involved.
Combine all relevant systems in those cases where we have multiple input variables involved .
"""
    Combine all relevant systems in those cases where we have multiple input variables involved.

    Parameters
    ----------
    all_rel_systems : set
        Current set of all relevant system names.
    rel_systems : set
        Set of relevant system names for the latest iteration.
    """
all_rel_systems
rel_systems