How Can I Make Selenium WebDriver in Python Sleep for Milliseconds?

Sleeping Selenium WebDriver in Python with Milliseconds

Question:

How can I suspend the execution of Selenium WebDriver for milliseconds using Python?

Answer:

Using time.sleep(secs)

You can use the time library to sleep WebDriver for milliseconds by passing a floating-point number of seconds:

import time
time.sleep(0.25)  # Sleeps for 250 milliseconds

Caution:

However, using time.sleep(secs) without specific conditions defeats the purpose of automation because it suspends execution without checking element states.

Recommended Approach:

Instead of time.sleep(secs), use WebDriverWait in conjunction with expected_conditions to validate element states before proceeding. Here are three commonly used expected_conditions:

presence_of_element_located(locator)

Verifies that an element is present on the DOM regardless of visibility.

visibility_of_element_located(locator)

Confirms that an element is present, visible, and has non-zero height and width.

element_to_be_clickable(locator)

Ensures that an element is visible, enabled, and clickable.

Example:

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

# Wait 10 seconds until the element with the ID "my_element" becomes visible before clicking it
WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID, "my_element")))
driver.find_element(By.ID, "my_element").click()

Reference:

• [WebDriverWait Not Working as Expected]()

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