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add link on how to obtain GIL to guide

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David Hewitt 2023-01-20 08:21:57 +00:00
parent 4d8537499f
commit e83803e813
1 changed files with 5 additions and 1 deletions
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6
guide/src/types.md
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@ -6,7 +6,7 @@ an overview of their intended meaning, with examples when each type is best
used.
## Mutability and Rust types
## The Python GIL, mutability, and Rust types
Since Python has no concept of ownership, and works solely with boxed objects,
any Python object can be referenced any number of times, and mutation is allowed
@ -43,6 +43,9 @@ an object's ownership has been passed to the Python interpreter, ensuring
references is done at runtime using `PyCell`, a scheme very similar to
`std::cell::RefCell`.
### Accessing the Python GIL
To get hold of a `Python<'py>` token to prove the GIL is held, consult [PyO3's documentation][obtaining-py].
## Object types
@ -299,3 +302,4 @@ This trait marks structs that mirror native Python types, such as `PyList`.
[PyAny]: {{#PYO3_DOCS_URL}}/pyo3/types/struct.PyAny.html
[PyList_append]: {{#PYO3_DOCS_URL}}/pyo3/types/struct.PyList.html#method.append
[RefCell]: https://doc.rust-lang.org/std/cell/struct.RefCell.html
[obtaining-py]: {{#PYO3_DOCS_URL}}/pyo3/marker/struct.Python.html#obtaining-a-python-token