consistency_helpers.py 文件源码

def add_reaction_constraints(model, reactions, Constraint):
    """
    Add the stoichiometric coefficients as constraints.

    Parameters
    ----------
    model : optlang.Model
        The transposed stoichiometric matrix representation.
    reactions : iterable
        Container of `cobra.Reaction` instances.
    Constraint : optlang.Constraint
        The constraint class for the specific interface.

    """
    for rxn in reactions:
        expression = sympy.Add(
            *[coefficient * model.variables[metabolite.id]
              for (metabolite, coefficient) in rxn.metabolites.items()])
        constraint = Constraint(expression, lb=0, ub=0, name=rxn.id)
        model.add(constraint)