Retry mechanism for flaky tests in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to retry a flaky test up to 3 times.

Selenium Python

for attempt in range([1]):
    try:
        run_flaky_test()
        break
    except Exception:
        if attempt == 2:
            raise

Drag options to blanks, or click blank then click option'

A0

B1

C5

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 means no retries, only one attempt.

Using 0 means the loop never runs.

The loop should run 3 times to retry the flaky test up to 3 attempts.

2fill in blank

medium

Complete the code to catch the exception type for flaky test failures.

Selenium Python

try:
    flaky_test()
except [1]:
    print('Test failed, retrying...')

Drag options to blanks, or click blank then click option'

ATimeoutException

BKeyError

CValueError

DIndexError

Attempts:

3 left

💡 Hint

Common Mistakes

Using ValueError or KeyError which are unrelated to Selenium waits.

TimeoutException is common for flaky Selenium tests due to delays.

3fill in blank

hard

Fix the error in the retry decorator to retry flaky tests.

Selenium Python

def retry_test(func):
    def wrapper(*args, **kwargs):
        for _ in range(3):
            try:
                return func(*args, **kwargs)
            except [1]:
                pass
        raise Exception('Test failed after retries')
    return wrapper

Drag options to blanks, or click blank then click option'

ATimeoutException

BException

CAssertionError

DValueError

Attempts:

3 left

💡 Hint

Common Mistakes

Catching only TimeoutException causes some failures to not retry.

Using Exception catches all errors to retry any failure.

4fill in blank

hard

Fill both blanks to implement a retry loop with delay between attempts.

Selenium Python

import time

for attempt in range([1]):
    try:
        flaky_test()
        break
    except Exception:
        if attempt < [2]:
            time.sleep(2)
        else:
            raise

Drag options to blanks, or click blank then click option'

A3

B2

C1

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Sleeping after last attempt wastes time.

Using 0 or 1 for retry count is too low.

Retry 3 times and sleep between first 2 attempts only.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that retries tests and stores pass status.

Selenium Python

results = { [1]: (run_test(test) == True) for test in tests if test [2] '5' and test [3] '10' }

Drag options to blanks, or click blank then click option'

Atest

B>

C<

Dtest.upper()

Attempts:

3 left

💡 Hint

Common Mistakes

Using test as key without transformation.

Using wrong comparison operators.

Use test.upper() as key, filter tests greater than 5 and less than 10.