- Validate that strings match specific patterns using regular expressions.
- Search for strings that match specific patterns using regular expressions.
- Class: a bundle of data and functionality. Can be copied and modified to accomplish a wide variety of programming tasks.
- Object: the more common name for an instance. The two can usually be used interchangeably.
- Object-Oriented Programming: programming that is oriented around data (made mobile and changeable in objects) rather than functionality. Python is an object-oriented programming language.
- Function: a series of steps that create, transform, and move data.
- Method: a function that is defined inside of a class.
This is a test-driven lab. Run pipenv install to create your virtual
environment and pipenv shell to enter the virtual environment. Then run
pytest -x to run your tests. Use these instructions and pytest's error
messages to complete your work in the lib/ folder.
You will write a program that, given a string of email addresses, parses that string into an array.
Your class, EmailAddressParser, should take the string of addresses on
initialization. Instances should respond to a parse() instance method that
parses the string into individual email addresses and returns them in an array.
Your class should be able to do this:
email_addresses = "john@doe.com, person@somewhere.org"
parser = EmailAddressParser(email_addresses)
parser.parse()
# => ["john@doe.com", "person@somewhere.org"]Note: Your EmailAddressParser class should handle a list of email
addresses that are separated by either spaces or comma-separated values
(CSVs):
EmailAddressParser("john@doe.com, person@somewhere.org").parse
# => ["john@doe.com", "person@somewhere.org"]
EmailAddressParser("john@doe.com person@somewhere.org").parse
# => ["john@doe.com", "person@somewhere.org"]Additionally, the parse() method should only return unique addresses,
sorted alphabetically.
Write your solution in lib/email_address_parser.py.
Once all of your tests are passing, commit and push your work using git to
submit.
Hints: in order to get this lab passing, you will need to do some research into the following topics:
- re - Regular expression operations - Python
- Python Regex Split String Using re.split()
- Think back to data structures: what could we cast a list to in order to get unique values?