Simple tool for removing the amount of UK VAT applied to a total receipt. Over-engineered to explore Python's ArgParse library in a little detail.
usage: VATDeductor [-h] [--version] [--rate [RATE]] [--verbose] T
Displays the VAT deductable from a total receipt value
positional arguments: T amount of TOTAL receipt value for processing
optional arguments: -h, --help show this help message and exit --version show program's version number and exit --rate [RATE] enter VAT rate as a decimal. Default is 1.2 --verbose displays Total Amount, VAT deductable & pretax values