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src/taurenmd/libs/libio.py

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Maintainability
B
6 hrs
Test Coverage

Cyclomatic complexity is too high in function evaluate_to_slice. (13)
Open

def evaluate_to_slice(*, value=None, start=None, stop=None, step=None):
    """
    Evaluate to slice.

    If any of ``start``, ``stop`` or ``step`` is given returns
Severity: Minor
Found in src/taurenmd/libs/libio.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 evaluate_to_slice has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.
Open

def evaluate_to_slice(*, value=None, start=None, stop=None, step=None):
    """
    Evaluate to slice.

    If any of ``start``, ``stop`` or ``step`` is given returns
Severity: Minor
Found in src/taurenmd/libs/libio.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

Function export_data_to_file has 6 arguments (exceeds 4 allowed). Consider refactoring.
Open

def export_data_to_file(
Severity: Minor
Found in src/taurenmd/libs/libio.py - About 45 mins to fix

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

    def frame_list(len_traj, start=None, stop=None, step=None, flist=None,):
    """
    Create frame integer list from a length and slice parameters.

    Examples
    Severity: Minor
    Found in src/taurenmd/libs/libio.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 frame_list has 5 arguments (exceeds 4 allowed). Consider refactoring.
    Open

    def frame_list(len_traj, start=None, stop=None, step=None, flist=None,):
    Severity: Minor
    Found in src/taurenmd/libs/libio.py - About 35 mins to fix

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

      def evaluate_to_slice(*, value=None, start=None, stop=None, step=None):
      Severity: Minor
      Found in src/taurenmd/libs/libio.py - About 35 mins to fix

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

        def mk_frame_path(ipath, frame=0, ext='.pdb', leading=0, suffix=None):
        Severity: Minor
        Found in src/taurenmd/libs/libio.py - About 35 mins to fix

          Avoid too many return statements within this function.
          Open

                  return slice(value)
          Severity: Major
          Found in src/taurenmd/libs/libio.py - About 30 mins to fix

            Avoid too many return statements within this function.
            Open

                    return slice(*indexes)
            Severity: Major
            Found in src/taurenmd/libs/libio.py - About 30 mins to fix

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