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Atomic type

As explained in Python How-To

An atomic type is a type whose supported accesses and operations are indivisible with respect to concurrent execution and provide defined synchronization semantics.

An atomic type supports accesses and operations that are indivisible during concurrent execution and provide defined synchronization semantics. The supplied examples discuss ordinary Python data types instead, so they do not establish how atomicity is implemented or used. section 2.2 section 6.3.1

Keep these concepts separate:

  • A Python data type describes values such as strings, integers, lists, dictionaries, and tuples. section 2.2 section 6.3.1
  • Type inspection, conversion, reassignment, and type hints address value representation or developer guidance, not concurrent synchronization. section 2.2 section 6.3.1
  • No supplied example demonstrates an atomic operation, concurrent access, memory ordering, or a synchronization guarantee. section 10.0

How Python How-To covers it

How deep it goes
Stops at type inspection, conversion, dynamic reassignment, and hints; it does not descend into atomic operations or synchronization.
Examples
Uses age conversion and variable annotations, but supplies no example of concurrent atomic operations.
What you can do after
Evaluate ordinary Python type behavior through inspection, conversion, reassignment, and non-enforcing hints; concurrency behavior remains unspecified.
How it connects
Connects ordinary data types with strings, integers, lists, dictionaries, tuples, dynamic typing, and type hints.

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This explainer was generated by Manning's knowledge graph from the text of Python How-To. The section links point to the parts of the book it draws on.