Python Sequences and Files

We can use the generic term sequence for any object that provides an ordered structure for a number of items, such as a string (a group of characters), a list, or a dictionary (keys and values).

Today’s topics

• Bread & butter sequence types: list, str, tuple, and dict
• Basic sequence keywords and operations: for and in
• Working with files

Tomorrow’s topics

• Advanced indexing and slicing
• Comprehensions for lists, dicts, and generators
• Important sequence methods

🐍 Code Breaks

Try working with lists Practice with list comprehensions

Projectm

You’ll be doing this assignment for the next two days, and we’ll work on parts of it in class.

Word Frequency

Resources

• Python notebooks
• A Byte of Python
• Python list comprehensions explained visually
• Python Docs: Sequence Types
  • Python Docs: Methods and Operations to Use with Sequences
  • Python Docs: Common Sequence Operations
• Python Docs: Common String Operations
• Python Docs: String Methods