Date picker interaction in Selenium Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Selenium code snippet?

Consider the following Selenium Python code that tries to select a date from a date picker widget. What will be the printed output after execution?

Selenium Python

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

# Assume driver is already initialized and navigated to the page
try:
    date_input = driver.find_element(By.ID, 'datePicker')
    date_input.click()
    # Wait for the calendar popup
    calendar = WebDriverWait(driver, 5).until(
        EC.visibility_of_element_located((By.CLASS_NAME, 'calendar-popup'))
    )
    # Select the 15th day
    day_15 = calendar.find_element(By.XPATH, ".//td[text()='15']")
    day_15.click()
    print('Date selected successfully')
except Exception as e:
    print(f'Error: {e}')

A Date selected successfully

B Error: no such element: Unable to locate element: {"method":"id","selector":"datePicker"}

C Error: TimeoutException

D Error: ElementNotInteractableException

💡 Hint

Think about what happens if the date picker and calendar popup exist and are interactable.

If the date picker input with ID 'datePicker' exists and clicking it shows a calendar popup with class 'calendar-popup', then the code finds the day '15' and clicks it successfully, printing 'Date selected successfully'. If any element is missing or not interactable, an exception would be caught and printed instead.

❓ locator

intermediate

Which locator is best to select the 'Next Month' button in a date picker?

You want to automate clicking the 'Next Month' button in a date picker widget. The button has the HTML: . Which locator is the best practice to use in Selenium?

A By.CLASS_NAME, 'nav-next'

B By.CSS_SELECTOR, "button[aria-label='Next Month']"

C By.XPATH, "//button[text()='>']"

D By.ID, 'next-month-btn'

💡 Hint

Use attributes that are stable and descriptive for accessibility.

Using the aria-label attribute is best practice for accessibility and stability. The class name might be reused elsewhere, the text '>' is not reliable, and the ID does not exist.

❓ assertion

advanced

Which assertion correctly verifies the selected date in a date picker input?

After selecting a date, the input field with ID 'datePicker' should show '2024-06-15'. Which assertion in Python unittest is correct?

Selenium Python

selected_date = driver.find_element(By.ID, 'datePicker').get_attribute('value')

A self.assertFalse(selected_date != '2024-06-15')

B self.assertTrue(selected_date == '15-06-2024')

C self.assertIn('2024-06-15', selected_date)

D self.assertEqual(selected_date, '2024-06-15')

💡 Hint

Check exact value equality for input fields.

The input's value attribute should exactly match '2024-06-15'. Option D uses assertEqual with the correct format. Option D uses wrong date format. Option D allows partial match which is less strict. Option D is logically correct but less clear.

🔧 Debug

advanced

Why does this Selenium code fail to select a date?

Given this code snippet, why does it raise ElementNotInteractableException? code: date_input = driver.find_element(By.ID, 'datePicker') date_input.send_keys('2024-06-15')

A The date picker input is read-only and requires clicking the calendar to select a date.

B The locator By.ID, 'datePicker' is incorrect and finds no element.

C send_keys is not supported on input elements.

D The date format '2024-06-15' is invalid for the input.

💡 Hint

Consider how date pickers often restrict direct typing.

Many date pickers have inputs that are read-only or disabled for typing. They require user interaction with the calendar widget. Trying to send keys causes ElementNotInteractableException.

❓ framework

expert

Which test framework feature best supports waiting for dynamic date picker elements?

You are automating tests for a web app with a dynamic date picker that loads calendar days asynchronously. Which Selenium WebDriver feature best handles waiting for the calendar days to appear before selecting a date?

A Implicit Wait set globally on the WebDriver instance

B Thread.sleep() to pause fixed time before interacting

C Explicit Wait with Expected Conditions targeting visibility of calendar day elements

D Using try-except blocks to catch NoSuchElementException and retry

💡 Hint

Use waits that wait for specific conditions rather than fixed delays.

Explicit waits with expected conditions allow waiting for specific elements or states, making tests reliable and efficient. Implicit waits apply globally and may cause unpredictable delays. Thread.sleep() is inefficient and brittle. Try-except retry is manual and error-prone.