niccokunzmann/ObservableList

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File test_observable_list.py has 321 lines of code (exceeds 250 allowed). Consider refactoring.
Open

"""Test the observable list.

The :class:`knittingpattern.ObservableList.ObservableList` is a
:class:`list` implementing the observer pattern.
This way, a row can be notifies abot the change in its instructions.
Severity: Minor
Found in ObservableList/test/test_observable_list.py - About 3 hrs to fix

    Cyclomatic complexity is too high in method assert_same. (15)
    Open

        def assert_same(self):

    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 _assert_change. (12)
    Open

        def _assert_change(self, change_and_elements, index, elements, adds=True):

    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 __init__.py has 253 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    """This module contains the ObservableList.
    
    This list works like a normal list but additionally observers can be registered
    that are notified, whenever the list is changed.
    """
    Severity: Minor
    Found in ObservableList/__init__.py - About 2 hrs to fix

      Cyclomatic complexity is too high in function module_name_and_doc. (6)
      Open

      def module_name_and_doc(relative_path):
          assert relative_path.startswith(PACKAGE)
          file, ext = os.path.splitext(relative_path)
          assert ext == ".py"
          names = []

      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 run. (6)
      Open

          def run(self):
              assert self.site_packages, "We need a folder to install to."
              print("link: {} -> {}".format(
                        os.path.join(self.site_packages[0], PACKAGE_NAME),
                        self.library_path
      Severity: Minor
      Found in setup.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 __imul__. (6)
      Open

          def __imul__(self, multiplier):
              """See list.__imul__."""
              if not isinstance(multiplier, int):
                  return super(ObservableList, self).__imul__(multiplier)
              length = len(self)
      Severity: Minor
      Found in ObservableList/__init__.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 _assert_change_adds. (6)
      Open

          def _assert_change_adds(self, obj, index, elements):

      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

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          @pytest.mark.parametrize("multiplier", [10, -10, 0, 1])
          def test_imul_is_empty(self, chain, multiplier):
              chain.__imul__(multiplier).assert_no_change()
      Severity: Minor
      Found in ObservableList/test/test_observable_list.py and 1 other location - About 55 mins to fix
      ObservableList/test/test_observable_list.py on lines 329..331

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 37.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          @pytest.mark.parametrize("multiplier", [-22, 22, -6, 6])
          def test_pop_invalid_argument(self, filled_chain, multiplier):
              filled_chain.pop(multiplier).assert_no_change()
      Severity: Minor
      Found in ObservableList/test/test_observable_list.py and 1 other location - About 55 mins to fix
      ObservableList/test/test_observable_list.py on lines 311..313

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 37.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          def _notify_remove_at(self, index, length=1):
              """Notify about an RemoveChange at a caertain index and length."""
              slice_ = self._slice_at(index, length)
              self._notify_remove(slice_)
      Severity: Minor
      Found in ObservableList/__init__.py and 1 other location - About 40 mins to fix
      ObservableList/__init__.py on lines 184..187

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 34.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          def _notify_add_at(self, index, length=1):
              """Notify about an AddChange at a caertain index and length."""
              slice_ = self._slice_at(index, length)
              self._notify_add(slice_)
      Severity: Minor
      Found in ObservableList/__init__.py and 1 other location - About 40 mins to fix
      ObservableList/__init__.py on lines 189..192

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 34.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Do not use bare 'except'
      Open

          except:

      When catching exceptions, mention specific exceptions when possible.

      Okay: except Exception:
      Okay: except BaseException:
      E722: except:

      Expected 2 blank lines after class or function definition, found 1
      Open

      DEVELOPMENT_STATES = {
      Severity: Minor
      Found in setup.py by pep8

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Expected 2 blank lines after class or function definition, found 1
      Open

      REPLACED_METHODS = ["__setitem__", "__delitem__", "clear", "remove", "pop",
      Severity: Minor
      Found in ObservableList/__init__.py by pep8

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Expected 2 blank lines after class or function definition, found 1
      Open

      required_packages = read_requirements_file("requirements.txt")
      Severity: Minor
      Found in setup.py by pep8

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Expected 2 blank lines after class or function definition, found 1
      Open

      ALL_METHODS = ["__init__", "__repr__", "__lt__", "__le__", "__eq__", "__gt__",

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Expected 2 blank lines after class or function definition, found 1
      Open

      other_selves = WeakKeyDictionary()

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Expected 2 blank lines after class or function definition, found 1
      Open

      PACKAGE = "ObservableList"
      Severity: Minor
      Found in docs/test/test_docs.py by pep8

      Separate top-level function and class definitions with two blank lines.

      Method definitions inside a class are separated by a single blank
      line.
      
      Extra blank lines may be used (sparingly) to separate groups of
      related functions.  Blank lines may be omitted between a bunch of
      related one-liners (e.g. a set of dummy implementations).
      
      Use blank lines in functions, sparingly, to indicate logical
      sections.
      
      Okay: def a():\n    pass\n\n\ndef b():\n    pass
      Okay: def a():\n    pass\n\n\nasync def b():\n    pass
      Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
      Okay: default = 1\nfoo = 1
      Okay: classify = 1\nfoo = 1
      
      E301: class Foo:\n    b = 0\n    def bar():\n        pass
      E302: def a():\n    pass\n\ndef b(n):\n    pass
      E302: def a():\n    pass\n\nasync def b(n):\n    pass
      E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
      E303: def a():\n\n\n\n    pass
      E304: @decorator\n\ndef a():\n    pass
      E305: def a():\n    pass\na()
      E306: def a():\n    def b():\n        pass\n    def c():\n        pass

      Do not use bare 'except'
      Open

              except:
      Severity: Minor
      Found in setup.py by pep8

      When catching exceptions, mention specific exceptions when possible.

      Okay: except Exception:
      Okay: except BaseException:
      E722: except:
      Severity
      Category
      Status
      Source
      Language