Each article contains a document ID which uniquely identifies the document. This document ID is comprised of four letters followed by a hyphen, followed by three numbers and optionally ending in a letter. For example, each of the following are valid document IDs: • ABCD-123 • ABCD-123V • XKCD-999A • COMP-200 The document IDs are not located in a consistent place in each article. Use a regular expression to identify the document ID for each document in the dataset. Write a Python program in partb1.py that produces a CSV file called partb1.csv containing the filenames and Document IDs for each document in the dataset. Your CSV file should contain the following columns in the order below:
• filename • documentID Your program should be called from the command line along with the name of the CSV file: python partb1.py partb1.csv