How to Effectively Wait for Multiple Elements to Load in Selenium with Python?

Python: Waiting for Multiple Elements to Load

AJAX-loaded lists can present challenges for visibility verification in Selenium. To reliably check if a list containing multiple elements has fully loaded, consider the following approaches:

Explicit Wait with WebDriverWait

Using WebDriverWait, you can induce the visibility_of_all_elements_located() condition:

<code class="python">elements = WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "ul.ltr li[id^='t_b_'] > a[id^='t_a_'][href]")))</code>

Alternatively, you can use XPath:

<code class="python">elements = WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, "//ul[@class='ltr']//li[starts-with(@id, 't_b_')]/a[starts-with(@id, 't_a_') and starts-with(., 'Category')]")))</code>

Waiting for Specific Number of Elements

To wait for a specific number of elements, such as 10, use a lambda function:

<code class="python">myLength = 9
WebDriverWait(driver, 20).until(lambda driver: len(driver.find_elements_by_xpath("//ul[@class='ltr']//li[starts-with(@id, 't_b_')]/a[starts-with(@id, 't_a_') and starts-with(., 'Category')]")) > int(myLength))</code>

<code class="python">myLength = 10
WebDriverWait(driver, 20).until(lambda driver: len(driver.find_elements_by_xpath("//ul[@class='ltr']//li[starts-with(@id, 't_b_')]/a[starts-with(@id, 't_a_') and starts-with(., 'Category')]")) == int(myLength))</code>

Additional Notes

• Remember to import the necessary Selenium packages.
• Ensure that the locators used are unique and specific to the desired elements.
• Consider exploring the discussions and references provided for further insights.

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