how to check how many window are open selenium python code example

Example: webdriver python get total number of tabs

def OpenNewTab(driver, Link):
    window_count = len(driver.window_handles)
    driver.execute_script('''window.open("'''+Link+'''","_blank");''')
    while len(driver.window_handles) != window_count+1:
        time.sleep(0.5)
    driver.switch_to.window(driver.window_handles[-1])