Method allow_threads

src/python.rs:234–246

Temporarily releases the GIL, thus allowing other Python threads to run.

(self, f: F)

    /// Temporarily releases the GIL, thus allowing other Python threads to run.
    pub fn allow_threads<T, F>(self, f: F) -> T
    where
        F: Send + FnOnce() -> T,
    {
        // The `Send` bound on the closure prevents the user from
        // transferring the `Python` token into the closure.
        unsafe {
            let save = ffi::PyEval_SaveThread();
            let result = f();
            ffi::PyEval_RestoreThread(save);
            result
        }
    }

    /// Evaluates a Python expression in the given context and returns the result.
    ///