__all__
__all__ is a module-level sequence of names specifying which names a Python module exports for wildcard imports.
The Quick Python Book, Fourth Edition
__all__ is a module-level sequence that specifies the names exported by a wildcard import.
- How it is used
- Controls which names wildcard imports expose from modules and packages.
- How deep it goes
- Defines export selection and demonstrates package behavior, but stops short of recursive importing and deeper package mechanics.
- Examples
- Demonstrates mathproj, comp, c1, and explicit imports through short interactive results.
- What you can do after
- Apply it via Python wildcard imports to select exported package names and avoid unintended names.
Read how The Quick Python Book, Fourth Edition explains __all__ →
Python Workout: 50 ten-minute exercises
__all__ is a module-level sequence that specifies which names are exported by a wildcard import from that module.
- How it is used
- Controls the names exposed when another program uses a wildcard import from a module.
- How deep it goes
- Defines the export-selection behavior and assigns a small construction exercise, without discussing import internals.
- Examples
- Uses a stuff module containing a, b, c, foo, and bar to select a, c, and bar.
- What you can do after
- Build it from scratch by defining __all__ for a module’s wildcard-import interface.
Read how Python Workout: 50 ten-minute exercises explains __all__ →
Python Workout, Second Edition
__all__ is a module-level sequence of names that defines the names exported by a wildcard import.
- How it is used
- Controls which names a wildcard import brings into the importing namespace.
- How deep it goes
- Defines an export sequence through a focused exercise, without detailing wildcard-import internals.
- Examples
- Uses a stuff module containing a, b, c, foo, and bar, selecting a, c, and bar.
- What you can do after
- Apply it via Python imports by defining a module’s desired wildcard-import names.
Related concepts
- wildcard importconfigures · A wildcard import is an import statement that brings eligible exported names from a module, package, object, or namespace into the importing scope.
- packageconfigured by · A software package is a named grouping of modules or components, often with related resources and metadata, organized for import, reuse, distribution, or management.
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