chrislit/abydos

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abydos/distance/_typo.py

Summary

Maintainability
C
1 day
Test Coverage

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

    def dist_abs(self, src: str, tar: str) -> float:
        """Return the typo distance between two strings.

        Parameters
        ----------
Severity: Minor
Found in abydos/distance/_typo.py - About 5 hrs 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

Cyclomatic complexity is too high in method dist_abs. (16)
Open

    def dist_abs(self, src: str, tar: str) -> float:
        """Return the typo distance between two strings.

        Parameters
        ----------
Severity: Minor
Found in abydos/distance/_typo.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

File _typo.py has 312 lines of code (exceeds 250 allowed). Consider refactoring.
Open

# Copyright 2018-2020 by Christopher C. Little.
# This file is part of Abydos.
#
# Abydos is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
Severity: Minor
Found in abydos/distance/_typo.py - About 3 hrs to fix

    Cyclomatic complexity is too high in class Typo. (6)
    Open

    class Typo(_Distance):
        """Typo distance.
    
        This is inspired by Typo-Distance :cite:`Song:2011`, and a fair bit of
        this was copied from that module. Compared to the original, this supports
    Severity: Minor
    Found in abydos/distance/_typo.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 __init__ has 5 arguments (exceeds 4 allowed). Consider refactoring.
    Open

        def __init__(
    Severity: Minor
    Found in abydos/distance/_typo.py - About 35 mins to fix

      Refactor this function to reduce its Cognitive Complexity from 34 to the 15 allowed.
      Open

          def dist_abs(self, src: str, tar: str) -> float:
      Severity: Critical
      Found in abydos/distance/_typo.py by sonar-python

      Cognitive Complexity is a measure of how hard the control flow of a function is to understand. Functions with high Cognitive Complexity will be difficult to maintain.

      See

      Too many branches (13/12)
      Open

          def dist_abs(self, src: str, tar: str) -> float:
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Used when a function or method has too many branches, making it hard to follow.

      Too many local variables (24/15)
      Open

          def dist_abs(self, src: str, tar: str) -> float:
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Used when a function or method has too many local variables.

      Using possibly undefined loop variable 'row'
      Open

                  return kb_array.index(row), row.index(char)
      Severity: Minor
      Found in abydos/distance/_typo.py by pylint

      Used when a loop variable (i.e. defined by a for loop or a list comprehension or a generator expression) is used outside the loop.

      Unable to import 'numpy'
      Open

      from numpy import zeros as np_zeros
      Severity: Critical
      Found in abydos/distance/_typo.py by pylint

      Used when pylint has been unable to import a module.

      Unable to import 'numpy'
      Open

      from numpy import float_ as np_float
      Severity: Critical
      Found in abydos/distance/_typo.py by pylint

      Used when pylint has been unable to import a module.

      Using possibly undefined loop variable 'row'
      Open

                  return kb_array.index(row), row.index(char)
      Severity: Minor
      Found in abydos/distance/_typo.py by pylint

      Used when a loop variable (i.e. defined by a for loop or a list comprehension or a generator expression) is used outside the loop.

      Consider using enumerate instead of iterating with range and len
      Open

                  for j in range(len(tar)):
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Emitted when code that iterates with range and len is encountered. Such code can be simplified by using the enumerate builtin.

      Unnecessary parens after 'not' keyword
      Open

                      if not (letters - keys):
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Used when a single item in parentheses follows an if, for, or other keyword.

      Variable name kb doesn't conform to snake_case naming style
      Open

                  for kb in ['QWERTY', 'QWERTZ', 'AZERTY']:
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Used when the name doesn't conform to naming rules associated to its type (constant, variable, class...).

      Consider using enumerate instead of iterating with range and len
      Open

              for i in range(len(src)):
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      Emitted when code that iterates with range and len is encountered. Such code can be simplified by using the enumerate builtin.

      Wrong hanging indentation before block (add 4 spaces).
      Open

              layout: str = 'QWERTY',
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO layout: str = 'QWERTY', ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

              failsafe: bool = False,
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO failsafe: bool = False, ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

              **kwargs: Any
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO **kwargs: Any ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

              metric: str = 'euclidean',
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO metric: str = 'euclidean', ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

              cost: Tuple[float, float, float, float] = (1.0, 1.0, 0.5, 0.5),
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO cost: Tuple[float, float, float, float] = (1.0, 1.0, 0.5, 0.5), ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

                  char: str, kb_array: Tuple[Tuple[str, ...], ...]
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO char: str, kb_array: Tuple[Tuple[str, ...], ...] ^ |

      Wrong hanging indentation before block (add 4 spaces).
      Open

              self,
      Severity: Info
      Found in abydos/distance/_typo.py by pylint

      TODO self, ^ |

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