Add new validations #3
Description
Add any common use-case validations
One to two per PR
A validator has the following structure:
Input: a single argument. This with be the value provided by user input. This will ALWAYS be a string in the module's current state.
Output: a bool. True for passes validation. False for failed validation
A validator may also be build using a factory.
i.e. pick_from_choices
These should return a function that follows the input/output defined above.
PLEASE ADD TEST