pyo3 0.18.0

Bindings to Python interpreter
Documentation 
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use std::marker::PhantomData;

use crate::Python;

/// A marker type that makes the type !Send.
/// Workaround for lack of !Send on stable (<https://github.com/rust-lang/rust/issues/68318>).
pub(crate) struct NotSend(PhantomData<*mut Python<'static>>);

pub(crate) const NOT_SEND: NotSend = NotSend(PhantomData);