Fluent waits in Selenium Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Fluent Wait in Selenium?

A Fluent Wait is a type of wait that defines the maximum amount of time to wait for a condition, as well as the frequency with which to check the condition. It also allows ignoring specific exceptions while waiting.

intermediate

How does Fluent Wait differ from Implicit Wait?

Implicit Wait sets a default waiting time for all elements, while Fluent Wait allows setting the polling frequency and ignoring exceptions, giving more control over waiting behavior.

intermediate

Which exceptions can Fluent Wait ignore during polling?

Fluent Wait can ignore exceptions like NoSuchElementException, ElementNotVisibleException, or any other exceptions you specify, so it keeps trying until the timeout.

advanced

Write a simple Python code snippet using Fluent Wait to wait for an element with id 'submit' to be clickable.

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.common.exceptions import NoSuchElementException

wait = WebDriverWait(driver, 10, poll_frequency=0.5, ignored_exceptions=[NoSuchElementException])
element = wait.until(EC.element_to_be_clickable((By.ID, 'submit')))

intermediate

Why is polling frequency important in Fluent Wait?

Polling frequency controls how often Selenium checks for the condition. A shorter frequency means faster response but more resource use; a longer frequency reduces resource use but may delay detection.

What does Fluent Wait allow you to do that Implicit Wait does not?

A Run tests in parallel

B Wait for page to load completely

C Automatically retry failed tests

D Set polling frequency and ignore exceptions

Fluent Wait lets you set how often to check for a condition and which exceptions to ignore while waiting.

Which exception is commonly ignored in Fluent Wait to keep polling for an element?

A NoSuchElementException

B TimeoutException

C AssertionError

D ValueError

NoSuchElementException is ignored so the wait keeps trying until the element appears or timeout.

What is the default polling frequency if not set explicitly in Fluent Wait?

A 1 second

B 500 milliseconds

C 100 milliseconds

D 5 seconds

The default polling frequency in Selenium Fluent Wait is 500 milliseconds.

Which Selenium class is used to implement Fluent Wait in Python?

A ExpectedConditions

B FluentWait

C WebDriverWait

D ActionChains

In Python Selenium, Fluent Wait is implemented using WebDriverWait with custom polling and ignored exceptions.

What happens if the condition is met before the timeout in Fluent Wait?

A Wait stops and returns the element

B Wait continues until timeout

C Test fails immediately

D Exception is thrown

Fluent Wait stops waiting as soon as the condition is met and returns the element.

Explain how Fluent Wait works in Selenium and why it is useful compared to other waits.

Think about how often Selenium checks and what it ignores while waiting.

Describe a scenario where using Fluent Wait would be better than using Implicit or Explicit Wait.

Consider pages where elements appear after varying delays.