What are some tips for using coverage.py in Python?

What are some tips for using coverage.py in Python?

Here are some tips for using coverage.py effectively:

1. Use the command line to run coverage with your tests.
2. Explore the HTML report for a visual representation of coverage.
3. Exclude files or lines that are not relevant to your tests using configuration options.
4. Combine coverage with continuous integration tools to ensure code quality.

How can I exclude certain files from coverage reports?

You can exclude files by adding a .coveragerc configuration file in your project directory. Use the omit option to specify patterns for files you want to exclude. For example:

[run]
omit = */tests/*, */migrations/*

What is the difference between branch coverage and line coverage?

Line coverage measures whether each line of code has been executed, while branch coverage checks if each possible path (branch) in control structures like if statements has been tested. Branch coverage is generally more comprehensive.

Can I integrate coverage.py with pytest?

Yes, you can easily integrate coverage.py with pytest by using the pytest-cov plugin. Install it via pip and run your tests with the --cov option to generate coverage reports.