selenium not setting input field value
You need to clear() the text input first:
bet_fa = browser.find_element_by_id("betFa")bet_fa.clear()bet_fa.send_keys("0.00000005")As for the your second problem - this is an input and the value you enter into it is kept inside the value attribute, not the text. Use get_attribute() method:
browser.find_element_by_xpath("//input[contains(@id,'betFa')]").get_attribute('value')