__repr__
__repr__ is a Python special method that returns an object’s developer-oriented string representation, ideally unambiguous and suitable for recreating an equivalent object.
Python Workout: 50 ten-minute exercises
A Python special method that returns an object's developer-oriented string representation, conventionally one that could represent the object in valid Python syntax.
- How it is used
- Formats objects for developers and makes printed containers reveal their contents.
- How deep it goes
- Defines the developer-facing convention and demonstrates inheritance-based implementations, while deferring distinct end-user formatting to __str__.
- Examples
- Uses colored animal objects, inherited representations, scoop collections, and cages containing multiple animals.
- What you can do after
- Apply it via Python special methods to format custom objects and reuse representations across an inheritance hierarchy.
Read how Python Workout: 50 ten-minute exercises explains __repr__ →
Python How-To
__repr__ is a Python special method that returns an official, unambiguous string representation of an object, ideally one that can recreate an equivalent object when evaluated as code.
- How it is used
- Uses __repr__ for developer-facing debugging and interactive-console inspection.
- How deep it goes
- Explains implementation, invocation, string quoting, and reconstruction, while deferring broader object-model internals.
- Examples
- Demonstrates Task representations, eval(repr(task)), a quoting failure, and dataclass-generated representations.
- What you can do after
- Build custom classes with inspectable, constructor-like representations and diagnose invalid output caused by missing string quotes.
Python Workout, Second Edition
__repr__ is Python's special method for producing an object's developer-oriented string representation, conventionally one that is unambiguous and potentially valid Python syntax.
- How it is used
- Formats objects for developer-oriented output and reports containing objects through print().
- How deep it goes
- Explains representation roles, generator-based formatting, and nested reports, but stops short of implementation internals.
- Examples
- Uses bowls of scoops, cages of animals, and inherited animal representations as concrete exercises.
- What you can do after
- Apply it via Python special methods to produce useful representations for objects and containers.
Related concepts
- __str__contrasts with · __str__ is a Python special method that returns an object's informal, human-readable string representation.
- string conversionproduces · String conversion is an operation that transforms a value or representation into its textual string form according to language-defined rules.
- special methodkind of · A special method is a Python method with a conventionally reserved name that defines an object's behavior for language operations or built-in functions.
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