.rst .pdf

3. Functions

• 3.1. Never Unpack More Than Three Variables When Functions Return Multiple Values
  • 3.1.1. Things to Remember
• 3.2. Prefer Raising Exceptions to Returning None
  • 3.2.1. Things to Remember
• 3.3. Know How Closures Interact with Variable Scope
  • 3.3.1. Things to Remember
• 3.4. Reduce Visual Noise with Variable Positional Arguments
  • 3.4.1. Things to Remember
• 3.5. Provide Optional Behavior with Keyword Arguments
  • 3.5.1. Things to Remember
• 3.6. Use None and Docstrings to Specify Dynamic Default Arguments
  • 3.6.1. Things to Remember
• 3.7. Enforce Clarity with Keyword-Only and Positional-Only Arguments
  • 3.7.1. Things to Remember
• 3.8. Define Function Decorators with functools.wraps
  • 3.8.1. Things to Remember

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2.8. Know How to Construct Key-Dependent Default Values with __missing__

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3.1. Never Unpack More Than Three Variables When Functions Return Multiple Values