Method contains

src/objects/sequence.rs:184–196

(&self, py: Python, value: V)

    /// Determine if o contains value. this is equivalent to the Python expression `value in o`
    #[inline]
    pub fn contains<V>(&self, py: Python, value: V) -> PyResult<bool>
    where
        V: ToPyObject,
    {
        let r = value.with_borrowed_ptr(py, |ptr| unsafe {
            ffi::PySequence_Contains(self.as_ptr(), ptr)
        });
        match r {
            0 => Ok(false),
            1 => Ok(true),
            _ => Err(PyErr::fetch(py)),
        }
    }

    /// Return the first index i for which o[i] == value.
    /// This is equivalent to the Python expression `o.index(value)`