yearfrac 0.4.8

Daycount methods to compute date differences in year units

[](https://badge.fury.io/py/yearfrac) [](https://snyk.io/advisor/python/yearfrac)

# yearfrac

## Installation The yearfrac [git repo](http://github.com/kmedian/yearfrac) is available as [PyPi package](https://pypi.org/project/yearfrac)

` pip install yearfrac `

## Usage Check the [examples](https://github.com/kmedian/yearfrac/tree/master/examples) folder for notebooks.

Functions

• isaleapyear – Check if a year is leap year

• eastersunday – Determine day and month of an Easter Sunday for a given year

• jd_to_date and date_to_jd – Julian Day number conversion

• act_afb – Actual/Actual AFB

• act_isda – Actual/Actual ISDA

• d30360e – 30E/360 ISDA daycount method

• d30365 – 30/365 daycount method

• yearfrac – Wrapper for all daycount methods

## Appendix

### Install a virtual environment

` python3.7 -m venv .venv source .venv/bin/activate pip3 install --upgrade pip pip3 install -r requirements.txt pip3 install -r requirements-dev.txt pip3 install -r requirements-demo.txt `

(If your git repo is stored in a folder with whitespaces, then don’t use the subfolder .venv. Use an absolute path without whitespaces.)

### Python Commands * Check syntax: flake8 –ignore=F401 –exclude=$(grep -v ‘^#’ .gitignore | xargs | sed -e ‘s/ /,/g’) * Run Unit Tests: python -W ignore -m unittest discover * Remove .pyc files: find . -type f -name “*.pyc” | xargs rm * Remove __pycache__ folders: find . -type d -name “__pycache__” | xargs rm -rf

Publish

`sh # pandoc README.md --from markdown --to rst -s -o README.rst # RST file is too much trouble python setup.py sdist twine upload -r pypi dist/* `

### Support Please [open an issue](https://github.com/kmedian/yearfrac/issues/new) for support.

### Contributors * Adam Groszer [@agroszer](https://github.com/agroszer) * Emilio Basualdo [@emiliobasualdo](https://github.com/emiliobasualdo) * Ivan Nesic [@fatkaratekid](https://github.com/fatkaratekid) * Vinay Gupta [@vinschess](https://github.com/vinschess) * Ulf Hamster [@ulf1](https://github.com/ulf1)

Please contribute using [Github Flow](https://guides.github.com/introduction/flow/). Create a branch, add commits, and [open a pull request](https://github.com/kmedian/yearfrac/compare/).