Click "Next" button on webpage using selenium in python

I have a very simple webpage expecting to click on "NEXT" button after inputting an activation code. But i am not able to find the element by value/name "next" .From the inspect element

<input type="submit" name="activationpage1:j_id_id18" value="Next &gt;&gt;" style="font-family:Arial,sans-serif;font-size:11px;text-align:center;" />

How can I achieve this in python code to click on the button named Next>>?