Conversion between typical CIDR ranges and the ranges allowed by AWS WAF:

AWS WAF supports /8, /16, /24, and /32 IPv4 address ranges and /16, /24, /32, /56, /64, and /128 IPv6 address ranges

$ ./converter.py -h
usage: converter.py [-h] cidr_range

Converts CIDR ranges into AWS WAF IP Set allowed ranges

positional arguments:
  cidr_range  eg. 192.168.0.0/23

optional arguments:
  -h, --help  show this help message and exit

$ ./converter.py 192.168.0.0/23
192.168.0.0/24
192.168.1.0/24

Supports both Python 2.7 and 3.6 (others may run but no tests are ran against them).

For Python2 you will need to install some dependencies:

pip install -r requirements.txt

These are backported modules from Python3's Standard Library so Python3 has no such dependencies.

To run all the tests for both Python2.7 and 3.6 just run:

tox

Obviously you will need tox available but this will install all dependencies for each environment in a virtual environment.

There is a pre-commit hook available that will automatically run the tests for you. Simply copy it into your .git/hooks folder to install it:

cp pre-commit .git/hooks/