Code example for Iterator

Methods: hasNextnext

     * @return the next item in the iteration 
     *         or null to signal the end of the iteration 
    public PyObject __iternext__() { 
        if (this._iterator.hasNext()) {
            try { 
                return Py.java2py(;
            } catch (ConcurrentModificationException e) {
                throw Py.RuntimeError("dictionary changed size during iteration"); 
        return null; 
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