The Python Selenium Webdriver encountered an error when trying to select a dropdown, stating that the local variable element was

I encountered an error while attempting to select a drop-down element in my code.

Error
Traceback (most recent call last):
  File "C:\Webdriver\ClearCore\TestCases\OperationsPage_TestCase.py", line 59, in test_add_and_run_clean_process
    process_lists_page.click_select_a_preview_to_import_configuration_from_dropdown_from_clean_task_tab(Globals.datapreview_crm_name)
  File "C:\Webdriver\ClearCore\Pages\operations.py", line 113, in click_select_a_preview_to_import_configuration_from_dropdown_from_clean_task_tab
    select = (Select(self.get_element(By.XPATH, 'html/body/div[2]/div[2]/div/div[4]/div/div[2]/div/div[3]/div/div[7]/div/div[3]/div/div[4]/div/div[2]/div/div[4]/div/div[3]/div/div[3]/div/div[4]/div/div[2]/div/div[3]/div/div[2]/div/div[3]/div/div[3]/div/div/div/div/div[1]/div[1]/div[2]/span[10]/span/select')))
  File "C:\Webdriver\ClearCore 501\Pages\base.py", line 31, in get_element
    return element
UnboundLocalError: local variable 'element' referenced before assignment

Here is the method I implemented:

def click_select_a_preview_to_import_configuration_from_dropdown_from_clean_task_tab(self, data_preview_name):
    #select = Select(By.XPATH, '//span[contains(text(), "Select a data preview to import configuration from")]/preceding::span[1]//../span//../select')
    #select = (Select(WebDriverWait(self.driver, 20).until(EC.element_to_be_clickable((By.XPATH, '//span[contains(text(), "Select a data preview to import configuration from")]/preceding::span[1]//../span//../select')))))
    #select = (Select(WebDriverWait(self.driver, 20).until(EC.element_to_be_clickable((By.XPATH, 'html/body/div[2]/div[2]/div/div[4]/div/div[2]/div/div[3]/div/div[7]/div/div[3]/div/div[4]/div/div[2]/div/div[4]/div/div[3]/div/div[3]/div/div[4]/div/div[2]/div/div[3]/div/div[2]/div/div[3]/div/div[3]/div/div/div/div/div[1]/div[1]/div[2]/div/span[10]/span/select')))))
    select = (Select(self.get_element(By.XPATH, 'html/body/div[2]/div[2]/div/div[4]/div/div[2]/div/div[3]/div/div[7]/div/div[3]/div/div[4]/div/div[2]/div/div[4]/div/div[3]/div/div[3]/div/div[4]/div/div[2]/div/div[3]/div/div[2]/div/div[3]/div/div[3]/div/div/div/div/div[1]/div[1]/div[2]/span[10]/span/select')))
    print select.options
    print [o.text for o in select.options] 
    select.select_by_visible_text(str(data_preview_name))
    return self

This is how the get_element method is implemented:

    def get_element(self, how, what):
        try:
            element = self.driver.find_element(by=how, value=what)
        except NoSuchElementException, e:
            print what
            print "Element not found "
            print e
        return element

The method called from the TestCase class to interact with the drop-down:

process_lists_page.click_select_a_preview_to_import_configuration_from_dropdown_from_clean_task_tab("Selenium_LADEMO_CRM_DONOTCHANGE")

Displayed HTML structure for the drop-down:

<div id="operations_add_process_list_tab_groups_tab_standard_1">
    <span/>
    <span>
        <span class="" title="" style="font-weight:bold;">Select a data preview to import configuration from</span>
    </span>
    <span>
    <span/>
    <span>
    <span>
    <span>
    <span>
    <span>
        <select tabindex="-1">
            <option selected="selected" value="None">None</option>
            <option value="CRMINVALID_07102015">CRMINVALID_07102015</option>
            …(Other options)…
        </select>
    </span>
    </div>

Any insights on why this error might be occurring? Is it due to visibility issues or a race condition?

My goal is to select the option "Selenium_LADEMO_CRM_DONOTCHANGE" from the drop-down list.

Thank you, Riaz

Answer №1

You have opted for a "private" approach to locate the element.

As per its explanation:

find_element(by='id', value=None)

This is a 'Private' method utilized by the find_element_by_* methods.

Suggestion: Opt for the respective find_element_by_* instead of this one.

Consider making the following adjustment:

element = self.driver.find_element(by=how, value=what)

Change it to:

element = self.driver.find_element_by_xpath(value=what)

Answer №2

After some troubleshooting, I was able to successfully make it work. The XPATH I used is as follows:

//div[@id="operations_add_process_list_tab_groups_tab_standard_1"]//select

The WebDriverWait code I implemented is:

select = Select(WebDriverWait(self.driver, 20).until(EC.element_to_be_clickable((By.XPATH, '//div[@id="operations_add_process_list_tab_groups_tab_standard_1"]//select'))))

There is only one dropdown option located below the specified div id. Using //select ensures that the dropdown can be found irrespective of its position within the div tag. This approach will continue to function even if the structure changes.

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