Python Selenium Package, selection of specific language - python-3.x

Question

with selenium package for python I want to:
1. Identify element on webpage
2. Select language
I believe that presented below HTML code refers to the button I have in mind:
<ul class="nav navbar-top-links navbar-right">
<li><a>Wersja:6653.606</a></li>
<img src="Img/Flags/32/pl.png">
<li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#">Wybór języka<span class="caret"></span></a>
<ul class="dropdown-menu dropdown-user">
<li><img src="Img/Flags/16/pl.png" style="margin-right: 10px">pl</li>
<li><img src="Img/Flags/16/en.png" style="margin-right: 10px">en</li>
</ul>
</li>
<li><span class="glyphicon glyphicon-log-in"></span> Logowanie</li>
</ul>
This is dropdown list, which presents two options:
polish language
english language
How do I locate this specific object on website (dropdown list)?
I was thinking about something like:
select_element = driver.find_element_by_class_name("dropdown-menu dropdown-user")
How do I use webbrowser to select specific option? (Let's say english language)
Some sort of selection, but I have to find the element first.
Thank you.

Answer 1

It took me at least couple of hours to find the solution, but I did it :).
To sum up:
1. I need to select and click the listbox on website with language selection.
2. Then I need to select and click desired language.
**Solution:**
- You can find element (like listbox) with selenium on multiple different ways:
find_element_by_id
find_element_by_name
find_element_by_xpath
find_element_by_link_text
find_element_by_partial_link_text
find_element_by_tag_name
find_element_by_class_name
find_element_by_css_selector
Documentation: https://selenium-python.readthedocs.io/locating-elements.html
- I tried multiple of them and failed.
I found info, that xpath is very reliable until somebody makes changes to html code of website.
- I have 0 knowledge of html / css etc. thus finding xpath was very difficult for me.
Fortunately I found add-in to firefox which did it for me:
https://github.com/trembacz/xpath-finder
- After installation of add-in, I first selected/found xpath for Listbox, then the same for language.
- Python code for both elements:
#Find Listbox with language selection and click it
select_element = driver.find_element_by_xpath("/html/body/form/div[3]/nav[1]/ul/li[2]/a")
select_element.click()
#Find language inside listbox and click it
select_element = driver.find_element_by_xpath("/html/body/form/div[3]/nav[1]/ul/li[2]/ul/li[2]/a")
select_element.click()
Done :)