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c3/experiment.py

Summary

Maintainability
D
2 days
Test Coverage

Consider possible security implications associated with pickle module.
Open

import pickle
Severity: Info
Found in c3/experiment.py by bandit

File experiment.py has 621 lines of code (exceeds 250 allowed). Consider refactoring.
Open

"""
Experiment class that models and simulates the whole experiment.

It combines the information about the model of the quantum device, the control stack
and the operations that can be done on the device.
Severity: Major
Found in c3/experiment.py - About 1 day to fix

    Function process has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring.
    Open

        def process(self, populations, labels=None):
        """
        Apply a readout procedure to a population vector. Very specialized
        at the moment.
    Severity: Minor
    Found in c3/experiment.py - About 3 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 compute_propagators. (14)
    Open

        def compute_propagators(self):
        """
        Compute the unitary representation of operations. If no operations are
        specified in self.opt_gates the complete gateset is computed.
    Severity: Minor
    Found in c3/experiment.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 process. (9)
    Open

        def process(self, populations, labels=None):
        """
        Apply a readout procedure to a population vector. Very specialized
        at the moment.
    Severity: Minor
    Found in c3/experiment.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 set_prop_method. (6)
    Open

        def set_prop_method(self, prop_method=None) -> None:
        """
        Configure the selected propagation method by either linking the function handle or
        looking it up in the library.
        """
    Severity: Minor
    Found in c3/experiment.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 _compute_folding_stack has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.
    Open

        def _compute_folding_stack(self):
        self.folding_stack = {}
        for instr in self.pmap.instructions.values():
            n_steps = int((instr.t_end - instr.t_start) * self.sim_res)
            if n_steps not in self.folding_stack:
    Severity: Minor
    Found in c3/experiment.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

    Avoid deeply nested control flow statements.
    Open

                                if ctrl.params["amp"] != 0.0:
                                offset = ctrl.params["freq_offset"].get_value()
                    freqs[line] = tf.cast(
    Severity: Major
    Found in c3/experiment.py - About 45 mins to fix

      Function set_prop_method has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

          def set_prop_method(self, prop_method=None) -> None:
        """
        Configure the selected propagation method by either linking the function handle or
        looking it up in the library.
        """
      Severity: Minor
      Found in c3/experiment.py - About 35 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 quick_setup has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
      Open

          def quick_setup(self, cfg, base_dir: str = None) -> None:
        """
        Load a quick setup cfg and create all necessary components.

        Parameters
      Severity: Minor
      Found in c3/experiment.py - About 25 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

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