Function with_critical_section 

pub fn with_critical_section<F, R>(object: &Bound<'_, PyAny>, f: F) -> R
where
    F: FnOnce() -> R,

Executes a closure with a Python critical section held on an object.

Locks the per-object mutex for the object op that is held while the closure f is executing. The critical section may be temporarily released and re-acquired if the closure calls back into the interpreter. See the notes in the pyo3::sync::critical_section module documentation for more details.

This is structurally equivalent to the use of the paired Py_BEGIN_CRITICAL_SECTION and Py_END_CRITICAL_SECTION C-API macros.