The test example as instructed on the page below was carried out: https://gist.github.com/edhiley/5da612c93e31c7e60355

Instructions for use.

1- install Python 3.5 or above 2- unzip the files which should include the following: -part1.py python file for exercise 1 -part2.py python file for exercise 2 -part3.py python file for exercise 3 -test_postcode.py python code for unit tests -README.md this file including instructions for use -ANALYSIS.md Analysis of the exercise and improvements

3- how to run the examples:

open a command prompt / terminal in the same folder where the files are located.

NOTE: if you also have python 2 installed on the system please use the command python3 to run the examples below.

run the unit test: python -m unittest test_postcode.py (the unit test tests the examples included on the github page for validation) if you need higher verbosity for the test output please use: python -m unittest -v test_postcode.py

run part1: python part1.py WC1A 2AA (it can be run with different postcodes of your choosing to test the regex)

run part2: python part2.py "import_data_csv.gz" (of course other gziped csv files can be used) a "failed_validation.csv" file generated when this finishes containing the failed postcodes).

run part3: python part3.py "import_data_csv.gz" (this one will generate both a "succeeded validation.csv" and "failed_validation.csv" files). The files are naturally sorted.