Python Gotchas

Python has a few key differences when compared to other, compiled languages, which occasionally cause unexpected behaviour.

Contents:

• List Iteration Modification
  • Description
  • Expected Result
  • Actual Output
  • Explanation
• Mutable Class Variables
  • Description
  • Expected Result
  • Actual Output
  • Why this causes confusion
  • What is happening
  • Demonstration
• Mutable Default Function Arguments
  • Description
  • Expected Result
  • Actual Result
  • Explanation