File glpk_interface.py has 727 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.

Model has 24 functions (exceeds 20 allowed). Consider refactoring.

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class Model(interface.Model, metaclass=inheritdocstring):
    def _initialize_problem(self):
        self.problem = glp_create_prob()
        glp_create_index(self.problem)
        if self.name is not None:

Function _initialize_model_from_problem has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

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    def _initialize_model_from_problem(self, problem):
        try:
            self.problem = problem
            glp_create_index(self.problem)
        except TypeError:

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

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    def _remove_variables(self, variables):
        if len(variables) > 0:
            if len(variables) > 350:
                delete_indices = [variable._index - 1 for variable in variables]
                keep_indices = [i for i in range(0, len(self._variables)) if i not in delete_indices]

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

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    def _get_expression(self):
        if self.problem is not None and self._expression_expired:
            variables = self.problem._variables

            def term_generator():

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

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    def _glpk_set_col_bounds(self, variable):
        if variable.lb is None and variable.ub is None:
            # 0.'s are ignored
            glp_set_col_bnds(self.problem, variable._index, GLP_FR, 0., 0.)
        elif variable.lb is None:

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Function __init__ has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def __init__(self, presolve="auto", verbosity=0, timeout=None, *args, **kwargs):

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

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    def _glpk_set_row_bounds(self, constraint):
        if constraint.lb is None and constraint.ub is None:
            # 0.'s are ignored
            glp_set_row_bnds(self.problem, constraint._index, GLP_FR, 0., 0.)
        elif constraint.lb is None:

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

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    def objective(self, value):
        value.problem = None
        if self._objective is not None:
            variables = self.objective.variables
            for variable in variables:

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

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    def __setstate__(self, state):
        self.__init__()
        for key, val in state.items():
            if key != "tolerances":
                setattr(self, key, val)

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

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    def _optimize(self):
        glp_scale_prob(self.problem, GLP_SF_AUTO)
        status = self._run_glp_simplex()

        # Sometimes GLPK gets itself stuck with an invalid basis. This will help it get rid of it.

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

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    def __init__(self, presolve="auto", verbosity=0, timeout=None, *args, **kwargs):
        super(Configuration, self).__init__(*args, **kwargs)
        self._smcp = glp_smcp()
        self._iocp = glp_iocp()
        glp_init_smcp(self._smcp)

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