Contributing to the source code
Build up an development environment
Please follow the instruction on the QuTiP contribution guide to
build a conda environment.
You don’t need to build
qutip in the editable mode unless you also want to contribute to qutip.
Instead, you need to install
qutip-qip by downloading the source code and run
pip install -e .
Docstrings for the code
Each class and function should be accompanied with a docstring explaining the functionality, including input parameters and returned values. The docstring should follow NumPy Style Python Docstrings.
Checking Code Style and Format
pip install black
In the directory that contains
black some_file.py --check black some_file.py --diff --color black some_file.py
--check will show if any of the file will be reformatted or not.
Code 0 means nothing will be reformatted.
Code 1 means one or more files could be reformatted. More than one files could be reformatted if
black some_directory --checkis used.
--diff --color will show a difference of
the changes that will be made by
Black. If you would prefer these changes to be made, use the last line of above code block.
We are currently in the process of checking format of existing code in
black existing_file.py will attempt to format existing code. We
advise you to create a separate issue for
existing_file.py or skip re-formatting
existing_file.py in the same PR as your new contribution.
It is advised to keep your new contribution
Checking tests locally
You can run tests and generate code coverage report locally. First make sure required packages have been installed.
pip install pytest pytest-cov
pytest is used to test files containing tests. If you would like to test all the
files contained in a directory then specify the path to this directory. In order to run
test_something.py then specify the exact path to this file for
or navigate to the file before running the tests.
pytest path_to_some_directory pytest /path_to_test_something/test_something.py ~/path_to_test_something$ pytest test_something.py
A code coverage report in
html format can be generated locally for
qutip-qip using the code line given below. By default the coverage report
is generated in a temporary directory
htmlcov. The report can be output
in other formats
pytest --cov-report html --cov=qutip_qip tests/
If you would prefer to check the code coverage of one specific file, specify
the location of this file. Same as above the report can be accessed in
pytest --cov-report html --cov=qutip_qip tests/test_something.py