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Terralego/django-geostore-routing

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geostore_routing/helpers.py

Summary

Maintainability
B
4 hrs
Test Coverage

File helpers.py has 273 lines of code (exceeds 250 allowed). Consider refactoring.
Open

import json

from django import VERSION as DJANGO_VERSION
from django.contrib.gis.db.models.functions import Distance, LineLocatePoint
Severity: Minor
Found in geostore_routing/helpers.py - About 2 hrs to fix

    Cyclomatic complexity is too high in method get_linestring. (7)
    Open

        def get_linestring(self):
        if self.routes:
            way = MultiLineString(*[GEOSGeometry(route['geometry'])
                                    for route in self.routes if isinstance(GEOSGeometry(route['geometry']),
                                                                           LineString)])
    Severity: Minor
    Found in geostore_routing/helpers.py by radon

    Cyclomatic Complexity

    Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

    Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

    Construct Effect on CC Reasoning
    if +1 An if statement is a single decision.
    elif +1 The elif statement adds another decision.
    else +0 The else statement does not cause a new decision. The decision is at the if.
    for +1 There is a decision at the start of the loop.
    while +1 There is a decision at the while statement.
    except +1 Each except branch adds a new conditional path of execution.
    finally +0 The finally block is unconditionally executed.
    with +1 The with statement roughly corresponds to a try/except block (see PEP 343 for details).
    assert +1 The assert statement internally roughly equals a conditional statement.
    Comprehension +1 A list/set/dict comprehension of generator expression is equivalent to a for loop.
    Boolean Operator +1 Every boolean operator (and, or) adds a decision point.

    Source: http://radon.readthedocs.org/en/latest/intro.html

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

        def get_linestring(self):
        if self.routes:
            way = MultiLineString(*[GEOSGeometry(route['geometry'])
                                    for route in self.routes if isinstance(GEOSGeometry(route['geometry']),
                                                                           LineString)])
    Severity: Minor
    Found in geostore_routing/helpers.py - About 45 mins to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

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

        def update_topology(cls, layer, features=None, tolerance=app_settings.GEOSTORE_ROUTING_TOLERANCE, clean=False):
    Severity: Minor
    Found in geostore_routing/helpers.py - About 35 mins to fix

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

          def wrapper(self, from_point, to_point, *args, **kwargs):
      Severity: Minor
      Found in geostore_routing/helpers.py - About 35 mins to fix

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