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src/libertem/io/dataset/base/tiling_scheme.py

Summary

Maintainability
C
7 hrs
Test Coverage

Use of assert detected. The enclosed code will be removed when compiling to optimised byte code.
Open

        assert len(shape) == len(containing_shape)
Severity: Info
Found in src/libertem/io/dataset/base/tiling_scheme.py by bandit

Use of assert detected. The enclosed code will be removed when compiling to optimised byte code.
Open

        assert len(factors) == len(base_shape)
Severity: Info
Found in src/libertem/io/dataset/base/tiling_scheme.py by bandit

Cyclomatic complexity is too high in method get_scheme. (14)
Open

    def get_scheme(
            self,
            udfs: Sequence[UDFProtocol],
            dataset,
            read_dtype: "nt.DTypeLike",
Severity: Minor
Found in src/libertem/io/dataset/base/tiling_scheme.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

Cyclomatic complexity is too high in method validate. (12)
Open

    def validate(
        self,
        shape: tuple[int, ...],
        ds_sig_shape: tuple[int, ...],
        size: int,
Severity: Minor
Found in src/libertem/io/dataset/base/tiling_scheme.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 tiling_scheme.py has 424 lines of code (exceeds 400 allowed). Consider refactoring.
Open

import math
import logging
import warnings
from typing import TYPE_CHECKING, Optional, Union
from collections.abc import Sequence
Severity: Minor
Found in src/libertem/io/dataset/base/tiling_scheme.py - About 2 hrs to fix

    Function get_scheme has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
    Open

        def get_scheme(
            self,
            udfs: Sequence[UDFProtocol],
            dataset,
            read_dtype: "nt.DTypeLike",
    Severity: Minor
    Found in src/libertem/io/dataset/base/tiling_scheme.py - About 2 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 _get_scale_factors. (8)
    Open

        def _get_scale_factors(self, shape, containing_shape, size, min_factors=None):
        """
        Generate scaling factors to scale `shape` up to `size` elements,
        while being constrained to `containing_shape`.
        """
    Severity: Minor
    Found in src/libertem/io/dataset/base/tiling_scheme.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

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

        def _get_intent(self, udfs: Sequence[UDFProtocol]) -> TilingIntent:
        udf_methods = tuple(udf.get_method() for udf in udfs)
        if any(m not in tuple(UDFMethod) for m in udf_methods):
            raise UDFException('A UDF declared an invalid processing method')
        if UDFMethod.PARTITION in udf_methods:
    Severity: Minor
    Found in src/libertem/io/dataset/base/tiling_scheme.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 validate has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
    Open

        def validate(
        self,
        shape: tuple[int, ...],
        ds_sig_shape: tuple[int, ...],
        size: int,
    Severity: Minor
    Found in src/libertem/io/dataset/base/tiling_scheme.py - About 1 hr 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 get_scheme has 28 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

        def get_scheme(
            self,
            udfs: Sequence[UDFProtocol],
            dataset,
            read_dtype: "nt.DTypeLike",
    Severity: Minor
    Found in src/libertem/io/dataset/base/tiling_scheme.py - About 1 hr to fix

      Refactor this function to reduce its Cognitive Complexity from 20 to the 15 allowed.
      Open

          def get_scheme(
      Severity: Critical
      Found in src/libertem/io/dataset/base/tiling_scheme.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

      Method "validate" has 8 parameters, which is greater than the 7 authorized.
      Open

              self,
        shape: tuple[int, ...],
        ds_sig_shape: tuple[int, ...],
        size: int,
        io_max_size: int,
      Severity: Major
      Found in src/libertem/io/dataset/base/tiling_scheme.py by sonar-python

      A long parameter list can indicate that a new structure should be created to wrap the numerous parameters or that the function is doing too many things.

      Noncompliant Code Example

      With a maximum number of 4 parameters:

      def do_something(param1, param2, param3, param4, param5):
    ...

      Compliant Solution

      def do_something(param1, param2, param3, param4):
    ...

      Take the required action to fix the issue indicated by this "FIXME" comment.
      Open

              # FIXME: adjust size to L3 // number of workers per node
      Severity: Major
      Found in src/libertem/io/dataset/base/tiling_scheme.py by sonar-python

      FIXME tags are commonly used to mark places where a bug is suspected, but which the developer wants to deal with later.

      Sometimes the developer will not have the time or will simply forget to get back to that tag.

      This rule is meant to track those tags and to ensure that they do not go unnoticed.

      Noncompliant Code Example

      def divide(numerator, denominator):
  return numerator / denominator              # FIXME denominator value might be 0

      See

      Take the required action to fix the issue indicated by this "FIXME" comment.
      Open

              # FIXME: let the UDF define upper bound for signal size (lower bound, too?)
      Severity: Major
      Found in src/libertem/io/dataset/base/tiling_scheme.py by sonar-python

      FIXME tags are commonly used to mark places where a bug is suspected, but which the developer wants to deal with later.

      Sometimes the developer will not have the time or will simply forget to get back to that tag.

      This rule is meant to track those tags and to ensure that they do not go unnoticed.

      Noncompliant Code Example

      def divide(numerator, denominator):
  return numerator / denominator              # FIXME denominator value might be 0

      See

      Take the required action to fix the issue indicated by this "FIXME" comment.
      Open

              # FIXME: validate navigation part of the tileshape to be contiguous
      Severity: Major
      Found in src/libertem/io/dataset/base/tiling_scheme.py by sonar-python

      FIXME tags are commonly used to mark places where a bug is suspected, but which the developer wants to deal with later.

      Sometimes the developer will not have the time or will simply forget to get back to that tag.

      This rule is meant to track those tags and to ensure that they do not go unnoticed.

      Noncompliant Code Example

      def divide(numerator, denominator):
  return numerator / denominator              # FIXME denominator value might be 0

      See

      Take the required action to fix the issue indicated by this "FIXME" comment.
      Open

              # FIXME: this veto may break if the base shape was adjusted
      Severity: Major
      Found in src/libertem/io/dataset/base/tiling_scheme.py by sonar-python

      FIXME tags are commonly used to mark places where a bug is suspected, but which the developer wants to deal with later.

      Sometimes the developer will not have the time or will simply forget to get back to that tag.

      This rule is meant to track those tags and to ensure that they do not go unnoticed.

      Noncompliant Code Example

      def divide(numerator, denominator):
  return numerator / denominator              # FIXME denominator value might be 0

      See

      There are no issues that match your filters.

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