Operator module
The operator module is a Python standard-library module providing function forms of built-in operators and related operations.
Python Workout: 50 ten-minute exercises
The operator module is a Python standard-library module providing function equivalents for many built-in operators.
- How it is used
- Uses operator functions to replace branching with dispatch tables and to provide reusable key functions for sorting.
- How deep it goes
- Works through calculator dispatch and itemgetter usage, but does not enumerate the module’s full API.
- Examples
- Demonstrates a prefix arithmetic calculator and sorting dictionaries by last name and first name.
- What you can do after
- Apply it via Python’s standard library to build dispatch tables and concise sorting key functions.
Read how Python Workout: 50 ten-minute exercises explains operator module →
Python Workout, Second Edition
The operator module is a Python standard-library module that provides function forms of built-in operators and related operations.
- How it is used
- Deploys function-valued operations for sorting data and selecting calculations from symbolic input.
- How deep it goes
- Explains itemgetter construction, multi-key sorting, dispatch-table lookup, unpacking, and maxsplit, but not module-wide API coverage.
- Examples
- Uses country dictionaries, sorted people records, tuple and string indexing, and a calculator dispatch table.
- What you can do after
- Apply it via itemgetter and operator-function dictionaries to write concise sorting keys and dispatch-driven calculations.
Read how Python Workout, Second Edition explains operator module →
Related concepts
- dispatch tableused by · A dispatch table is a mapping from operation or case identifiers to callable implementations selected and invoked at runtime.
- operatorimplements · An operator is a symbol, keyword, or language construct that specifies an operation on one or more operands.
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