Class dict

include/pybind11/pytypes.h:2199–2237

}

class dict : public object {
public:
    PYBIND11_OBJECT_CVT(dict, object, PyDict_Check, raw_dict)
    dict() : object(PyDict_New(), stolen_t{}) {
        if (!m_ptr) {
            pybind11_fail("Could not allocate dict object!");
        }
    }
    template <typename... Args,
              typename = detail::enable_if_t<args_are_all_keyword_or_ds<Args...>()>,
              // MSVC workaround: it can't compile an out-of-line definition, so defer the
              // collector
              typename collector = detail::deferred_t<detail::unpacking_collector<>, Args...>>
    explicit dict(Args &&...args) : dict(collector(std::forward<Args>(args)...).kwargs()) {}

    size_t size() const { return static_cast<size_t>(PyDict_Size(m_ptr)); }
    bool empty() const { return size() == 0; }
    detail::dict_iterator begin() const { return {*this, 0}; }
    detail::dict_iterator end() const { return {}; }
    void clear() /* py-non-const */ { PyDict_Clear(ptr()); }
    template <typename T>
    bool contains(T &&key) const {
        auto result = PyDict_Contains(m_ptr, detail::object_or_cast(std::forward<T>(key)).ptr());
        if (result == -1) {
            throw error_already_set();
        }
        return result == 1;
    }

private:
    /// Call the `dict` Python type -- always returns a new reference
    static PyObject *raw_dict(PyObject *op) {
        if (PyDict_Check(op)) {
            return handle(op).inc_ref().ptr();
        }
        return PyObject_CallFunctionObjArgs(
            reinterpret_cast<PyObject *>(&PyDict_Type), op, nullptr);
    }
};

class sequence : public object {
public: