wait until page refreshed

Question

Here is a description of what I am trying to do using Selenium Webdriver in Python: I have my website which takes as input various parameters for a specific product and outputs a price for the product with those parameters. I am keeping all but one parameters constant and varying one specific parameter in a for loop to see how the price varies according to that one specific parameter. Once i change the parameter i submit the form and then i use implicitly wait as follows:

submit_btn.click()
driver.implicitly_wait(10)  
driver.find_element_by_name("Buy_Product")
soup=BeautifulSoup(driver.page_source)

When entering the first set of parameters the page is clear and it does not contain the buttton with name "Buy_Product" so i am using the line

driver.find_element_by_name("Buy_Product")

to make sure the code waits for that button to appear which will mean the page now contains the price i want to extract. The problem is that the second time through the loop when i vary the parameter and try to get the new price the button "Buy_Product" is already there so implicitly wait does not work anymore and sometimes it will take the previous page_source before the price has time to be updated. The tricky part is that sometimes even for different parameters the price is the same so i can not just check whether the visible text of the price has changed. Any ideas how this can be solved without using time.sleep?

Answer 1

The situation is something tricky here...i'm not sure...if this helps...but give a try...

My suggestion is on JavaScript injection, where i check if the Page is loaded completely and it waits till then. (c# code snippet)

IWait<IWebDriver> Driver_Wait = new OpenQA.Selenium.Support.UI.WebDriverWait(driver, TimeSpan.FromSeconds(30.00));
Driver_Wait.Until(Driver => ((IJavaScriptExecutor)JS_Driver).ExecuteScript("return document.readyState").Equals("complete"));

I hope this helps....All the Best :-)