File _models.py has 427 lines of code (exceeds 250 allowed). Consider refactoring.

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# -*- coding: utf-8 -*-

"""Solph Optimization Models.

SPDX-FileCopyrightText: Uwe Krien <krien@uni-bremen.de>

Function _add_parent_block_variables has a Cognitive Complexity of 38 (exceeds 5 allowed). Consider refactoring.

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    def _add_parent_block_variables(self):
        """Add the parent block variables, which is the `flow` variable,
        indexed by FLOWS and TIMEINDEX."""
        self.flow = po.Var(self.FLOWS, self.TIMEINDEX, within=po.Reals)

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Function __init__ has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.

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    def __init__(self, energysystem, **kwargs):
        """Initialize a BaseModel, using its energysystem as well as
        optional kwargs for specifying the timeincrement, objective_weighting
        and constraint_groups."""
        super().__init__()

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Avoid deeply nested control flow statements.

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                        for p, t in self.TIMEINDEX:
                            self.flow[o, i, p, t].setlb(
                                self.flows[o, i].min[t]
                                * self.flows[o, i].nominal_value
                            )

Avoid deeply nested control flow statements.

Open

                        for p, t in self.TIMEINDEX:
                            self.flow[o, i, p, t].setlb(0)
            else:

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

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    def _add_parent_block_sets(self):
        """Add all basic sets to the model, i.e. NODES, TIMESTEPS and FLOWS.
        Also create sets PERIODS and TIMEINDEX used for multi-period models.
        """
        self.nodes = list(self.es.nodes)

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

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    def __init__(self, energysystem, discount_rate=None, **kwargs):
        if discount_rate is not None:
            self.discount_rate = discount_rate
        elif (
            not isinstance(energysystem, list)

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