Cron Expression Parser

1. A simple cron expression parser written in python that translates cron expression and send output in table format.

2. validates cron expression and able to handle errors.

3. Handles setp values(/), range values(-) and comma(,) separated values.

4. It accepts string input which has following five paramters

• minute
• hour
• day of month
• month
• day of week
• command

Steps to create and upload pypi package

• create project
• create setup.py
• run python3 setup.py sdist bdist_wheel
• it will create dist folder in ur code folder incusing wheel files
• register and create account on pypi library
• run twine upload dist/*

System Requirements

• Python >=3.12
• pipenv

Steps to use

follow these steps, to use this program:

1. Open a terminal or command prompt in the root folder.

2. Install all dependencies and active the virtual environment:

   pip3 install pipenv
   pipenv install
   pipenv install -r requirements.txt
   pipenv shell
   pipenv install pytest

3. Install the package as a binary name cron-parser.

   pip3 install --editable .

4. Run the program with a cron expression as an argument. For example:

   cron-parser "<expression>"

   expression should be including minutes, hours, day of month, months, day of week and command

   Example : "*/10 0 2,12 * 2-6 /usr/bin/find"

5. The program will output the formatted cron expression as a table, like this:

   minute        0 10 20 30 40 50
   hour          0
   day of month  2 12
   month         1 2 3 4 5 6 7 8 9 10 11 12
   day of week   2 3 4 5 6
   command       /usr/bin/find
   

6. To run the tests , run following command:

   pytest

• • • • • /usr/bin/find -v foo