What are the different Grades and how are they calculated?

 1. Overall Grade


Codacy gives an overall grade to help you better understand the quality of your repository.
Grades range from A to FA being the highest grade.

Note the grading is performed on a branch level, to give a better understanding of the code quality on a branch basis.

2. Category Grades


Issue classification is as follows:

  • Code Complexity
  • Documentation
  • Code Style
  • Compatibility
  • Error-Prone
  • Performance
  • Security
  • Unused Code

Every issue impacts the grade of its category.
Category grading ranges from 0% - 100%, 100% being the highest grade.

3. File Grades


File grades range from A to FA being the highest grade.

Grading every file occurs according to the weighted average of the following categories:

  • issues
  • clones
  • complexity
  • coverage (optional)

4. Commit Grades


The grading for commits also ranges from A to F.

We grade every commit according to the weighted average of the following categories:

  • new issues from calculated delta
  • fixed issues from calculated delta
  • other metrics from delta (coverage, complexity, number of clones)

5. Grade Calculation


Codacy grades based on the number of issues for every thousand lines of code (KLOC). Steve McConnell, in his book 'Code Complete,' wrote about average bugs per LOC:

(a) Industry Average: "about 15 - 50 errors per 1000 lines of delivered code." He further states this is usually representative of code that has some level of structured programming behind it but probably includes a mix of coding techniques.

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