File cplex_interface.py has 793 lines of code (exceeds 250 allowed). Consider refactoring.

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# Copyright 2013 Novo Nordisk Foundation Center for Biosustainability,
# Technical University of Denmark.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.

Function _initialize_model_from_problem has a Cognitive Complexity of 34 (exceeds 5 allowed). Consider refactoring.

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    def _initialize_model_from_problem(self, problem):
        if isinstance(problem, cplex.Cplex):
            self.problem = problem
            zipped_var_args = zip(self.problem.variables.get_names(),
                                  self.problem.variables.get_lower_bounds(),

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Model has 22 functions (exceeds 20 allowed). Consider refactoring.

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class Model(interface.Model, metaclass=inheritdocstring):
    def _initialize_problem(self):
        self.problem = cplex.Cplex()

    def _initialize_model_from_problem(self, problem):

Function _add_constraints has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.

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    def _add_constraints(self, constraints, sloppy=False):
        super(Model, self)._add_constraints(constraints, sloppy=sloppy)

        linear_constraints = dict(lin_expr=[], senses=[], rhs=[], range_values=[], names=[])
        for constraint in constraints:

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Function _get_quadratic_expression has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.

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    def _get_quadratic_expression(self, quadratic=None):
        if quadratic is None:
            try:
                quadratic = self.problem.objective.get_quadratic()
            except IndexError:

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Function objective has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

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    def objective(self, value):
        value.problem = None
        if self._objective is not None:  # Reset previous objective
            variables = self.objective.variables
            if len(variables) > 0:

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Function __init__ has 8 arguments (exceeds 4 allowed). Consider refactoring.

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    def __init__(self, lp_method='primal', presolve="auto", verbosity=0, timeout=None,

Function solution_target has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

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    def solution_target(self, value):
        if self.problem is not None:
            params = self.problem.problem.parameters
            try:
                solution_target = params.optimalitytarget

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Function _add_variables has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

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    def _add_variables(self, variables):
        super(Model, self)._add_variables(variables)
        lb, ub, vtype, names, coeff = list(), list(), list(), list(), list()
        for variable in variables:
            if variable.lb is None:

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Function type has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

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    def type(self, value):
        if self.problem is not None:
            try:
                cplex_kind = _VTYPE_TO_CPLEX_VTYPE[value]
            except KeyError:

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Function _get_expression has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

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    def _get_expression(self):
        if self.problem is not None:
            cplex_problem = self.problem.problem
            try:
                cplex_row = cplex_problem.linear_constraints.get_rows(self.name)

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Function verbosity has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

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    def verbosity(self, value):

        class StreamHandler(StringIO):

            def __init__(self, logger, *args, **kwargs):

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Function _constraint_lb_and_ub_to_cplex_sense_rhs_and_range_value has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

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def _constraint_lb_and_ub_to_cplex_sense_rhs_and_range_value(lb, ub):
    """Helper function used by Constraint and Model"""
    if lb is None and ub is None:
        raise Exception("Free constraint ...")
    elif lb is None:

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Function _set_presolve has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

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    def _set_presolve(self, value):
        if getattr(self, 'problem', None) is not None:
            presolve = self.problem.problem.parameters.preprocessing.presolve
            if value is True:
                presolve.set(presolve.values.on)

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Function __init__ has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

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    def __init__(self, lp_method='primal', presolve="auto", verbosity=0, timeout=None,
                 solution_target="auto", qp_method="primal", *args, **kwargs):
        super(Configuration, self).__init__(*args, **kwargs)
        self.lp_method = lp_method
        self.presolve = presolve

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