Simple lambda functions without lambda x:
and with string conversion capability. Originally developed in the valid8 validation library.
This is the readme for developers. The documentation for users is available here: https://smarie.github.io/python-mini-lambda/
This project is basically code generating code generating code :)
The following command performs the first code generation. It updates the mini_lambda/generated.py
file.
python ./code_generation/mini_lambda_methods_generation.py
It is based on a mako template located at code_generation/mini_lambda_template.mako
.
The generated code contains functions that generate functions when called, such as:
def __gt__(self, other):
""" Returns a new LambdaExpression performing '<r> > other' on the result <r> of this evaluator's evaluation """
def ___gt__(input):
# first evaluate the inner function
r = self.evaluate(input)
# then call the method
return r > evaluate(other, input)
# return a new LambdaExpression of the same type than self, with the new function as inner function
return type(self)(___gt__)
So whenever you use the syntax provided, for example when you perform power2 = x > 2 |_
, it dynamically creates a 'closure' function (here ___gt__
), that will be called when you will later evaluate the expression on an input, as in power2(3)
.
Contributions are welcome ! Simply fork this project on github, commit your contributions, and create pull requests.
Here is a non-exhaustive list of interesting open topics: https://github.com/smarie/python-mini-lambda/issues
This project uses pytest
.
pytest -v mini_lambda/tests/
You may need to install requirements for setup beforehand, using
pip install -r ci_tools/requirements-test.txt
This project uses setuptools_scm
to synchronise the version number. Therefore the following command should be used for development snapshots as well as official releases:
python setup.py egg_info bdist_wheel rotate -m.whl -k3
You need to generate code before packaging.
You also may need to install requirements for setup beforehand, using
pip install -r ci_tools/requirements-setup.txt
This project uses mkdocs
to generate its documentation page. Therefore building a local copy of the doc page may be done using:
mkdocs build
You may need to install requirements for doc beforehand, using
pip install -r ci_tools/requirements-doc.txt
The following commands generate the html test report and the associated badge.
pytest --junitxml=junit.xml -v mini_lambda/tests/
ant -f ci_tools/generate-junit-html.xml
python ci_tools/generate-junit-badge.py
This project is now automatically deployed to PyPI when a tag is created. Anyway, for manual deployment we can use:
twine upload dist/* -r pypitest
twine upload dist/*