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Returning Values and Understanding Scope in Python

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Overview

Return values from Python functions, understand local scope, chain functions into pipelines, and document each function's contract with docstrings.

Syllabus

  • Unit 1: Returning Values in Python
    • Reading a Returned Value
    • From Printing to Returning
    • Using Returned Values Inline
    • Reusing Values and Meeting None
    • Repairing a Missing Return
  • Unit 2: Understanding Function Scope
    • Where rate Lives
    • Returning a Local Instead of Reaching
    • Same Name Different Scope
    • Building compute_tax with a local rate
    • Using a Local Intermediate
  • Unit 3: Chaining Functions Together
    • Following a Value Through Three Functions
    • Chaining Calls in One Expression
    • Inserting a Stage Into the Pipeline
    • Combining Returns and Naming Stages
    • Building the Final Receipt Pipeline
  • Unit 4: Writing Function Contracts
    • Reading a Function's Contract
    • Documenting an Undocumented Function
    • Reading Documentation Back at Runtime
    • Repairing a Stale Contract
    • Writing a Documented Function

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