["python","selenium-webdriver","onclick","click"]
python selenium click on button

I am quite new to python selenium and I am trying to click on a button which has the following html structure: <div class="b_div"> <div class="button c_button s_button" onclick="submitForm('mTF')"> <input class="very_small" type="button"></input> <div class="s_image"></div> <span> Search </span> </div> <div class="button c_button s_button" onclick="submitForm('rMTF')" style="margin-bottom: 30px;"> <input class="v_small" type="button"></input> <span> Reset </span> </div> </div> I would like to be able to click both the Search and Reset buttons above (obviously individually). I have tried a couple of things, for example: driver.find_element_by_css_selector('.button .c_button .s_button').click() or, driver.find_element_by_name('s_image').click() or, driver.find_element_by_class_name('s_image').click() but, I seem to always end up with NoSuchElementException, for example: selenium.common.exceptions.NoSuchElementException: Message: u'Unable to locate element: {"method":"name","selector":"s_image"}' ; I am wondering if I can somehow use the onclick attributes of the HTML to make selenium click? Any thoughts which can point me in the right direction would be great. Thanks.
For python, use the from selenium.webdriver import ActionChains and ActionChains(browser).click(element).perform()