epiweeks 2.1.1

Epidemiological weeks based on the CDC (MMWR) and ISO week numbering systems.

A Python package to calculate epidemiological weeks using the CDC (MMWR) and ISO week numbering systems.

Features

• Support for both the CDC (MMWR) and ISO week numbering systems.

• Accurate and tested calculations.

• Intuitive, clean, and easy-to-use interface.

• Calculation of the start and end dates of weeks.

• Iteration of year’s weeks or week’s dates.

• Rich comparison between weeks.

• Logical operations for weeks (addition, subtraction and containment).

• Validation of input data.

• Works on Python 3.6+ with zero dependencies.

• Thoroughly tested on all supported Python versions.

Installation

$ pip install -U epiweeks

Basic Usage

from epiweeks import Week, Year

week = Week(2019, 1)
print(week.enddate())
# 2019-01-05

for week in Year(2019).iterweeks():
    print(week.enddate())
# 2019-01-05
# 2019-01-12
# ...
# 2019-12-21
# 2019-12-28

Online Tool

The following is a simple online tool that was developed to calculate epidemiological weeks (CDC system only) using the latest version of this package:

https://www.dralshehri.com/epiweeks/

Documentation

Please see https://epiweeks.readthedocs.io/ for full documentation of this package, including overview, more usage examples and API reference.

Contributing

Contributions are welcome! See CONTRIBUTING.rst for more info.

Authors

The main author is Mohammed Alshehri — @dralshehri.

License

This package is distributed under an MIT license. See LICENSE.

Change Log

2.1.1

• Fixed some typos.

• Improved documentation.

2.1.0

• Changed the parameter method, which sets how the weeks are numbered, to system for better clarity and intuitive usage.

• Updated documentation and unit tests.

• Other minor fixes and enhancements.

2.0.0

• Dropped support for Python 3.5.

• Added fromstring() classmethod to allow constructing the Week object from a formatted string, for example ‘2019W08’ or ‘201908’.

• Added cdcformat() method to return a formatted string like the one used by US CDC for epi weeks, for example for week 8 of 2019 it returns ‘201908’.

• Added daydate() method to return the date of specific weekday for a week.

• Changed the optional value ‘WHO’ of the parameter method to ‘ISO’.

• Changed the fromdate() classmethod of Week object to accept a date object as an argument instead of year, month, and day.

• Made the Week and Year objects hashable.

• Improved rich comparison methods.

• Improved input data validation.

• Updated and improved documentation examples.

• Updated unit tests.

• Other minor fixes and enhancements.

1.0.0

• First release.