Here are resources and additional documentation about list comprehensions:
- Understanding Python List Comprehensions: Real Python Video Course
- When to Use a List Comprehension in Python: Real Python Article
- List Comprehensions: Python Docs
The quote used in the example is available here:
"""On a visit to the NASA space center, President Kennedy spoke to a man sweeping \ up in one of the buildings. "What's your job here?" asked Kennedy. "Well Mr. President," \ the janitor replied, "I'm helping to put a man on the moon"."""