Then before making HTTP calls, you check the cache, and only hit the network if it’s a miss. You can build a simple token bucket or leaky bucket in your code, or lean on libraries like ratelimit or asyncio-throttle. Next, resp.json() might raise a ValueError if it’s invalid JSON—catch that. If it’s not in the 2xx range, handle or raise a clear exception. Companies ask this question because signing requests is crucial for securing private API endpoints.
Driver.getWindowHandle() – It returns a handle of the current page (a unique identifier)driver.getWindowHandles() – It returns a set of handles of the all the pages available. It has methods to move back, forward as well as to refresh a page. To press ENTER key using Selenium WebDriver, We need to use Selenium Enum Keys with its constant ENTER. It will remain same throughout the driver object instance. Once we set the time, WebDriver will wait for the element based on the time we set before it throws an exception.
By following these practices, developers can effectively manage Python packages and environments, making it easier to maintain and collaborate on projects. Python 2 and Python 3 are two major versions of the Python programming language that have some key differences. Optimizing Python code for performance involves identifying and addressing performance issues to improve the speed and efficiency of the code.
- It also helps in identifying problems faster so the team can fix them without delays, saving both time and effort.
- These are among the most common Python coding questions for interview rounds and help strengthen problem-solving skills.
- Discover how iMocha can help you hire high-performing candidates while maintaining the organizational skills bar.
Use OAuth 2.0 or signed API keys, HTTPS, https://uvik.io/ rate limits, request validation, schema validation, audit logs, and clear error responses. Avoid retrying non-idempotent POST requests unless the API supports idempotency keys. Keep APIs stateless so requests can be handled by any server instance. Apply limits by user ID, IP address, API key, or tenant. Rate limiting controls how many requests a client can make in a time window.
WebDriver facilitates the user with the following methods to check the visibility of the web elements. As per the above example, it will allow us to run 4 instances of both IE and Firefox at the same time (in parallel) in a remote machine. MaxInstances is the no. of browser instances of the same version of the browser that can run on the remote machine. Purpose of these two methods (driver.close and driver.quit) is almost same.
Company News, Diversity & Inclusion, iMocha Engineering Product Updates Remote Hiring Skills Assessment
While having these enhanced capabilities can be useful for certain tasks, it also requires careful management to prevent potential security risks. These privileges may allow the browser to interact more deeply with the operating system, modify settings, or run scripts with higher authority. An “origin” in this context refers to a combination of the scheme (protocol), host (domain), and port. These scenarios typically begin with keywords such as “Given,” “When,” “Then,” which outline preconditions, trigger events, and expected outcomes, respectively. In BDD, scenarios are typically written in a Given-When-Then format, which outlines the context, the action, and the expected outcome. BDD aims to enhance shared understanding by defining the behavior of software through examples in plain language.
It is designed to handle large, multi-dimensional arrays and matrices efficiently. This means the list doesn’t reset, and we get its value as 1, ‘a’. To merge or concatenate elements in a sequence (like a list or tuple) into a single string, you can use the join() method in Python. Whether automation testing, Java development, or data engineering, the answer lies in mastering the fundamentals of the concepts and work, practical application, and minimalistic coding approaches. The focus of an interview with EPAM goes beyond surface-level responses to real-world contexts, along with distinct and clear communication skills.
This is very famous for its highly optimized tools that result in high performance and powerful N-Dimensional array processing feature that is designed explicitly to work on complex arrays. Then we follow the approach of getting items of union that are not there in the list of the intersection. We can identify if a dataframe has missing values by using the isnull() and isna() methods.
In Playwright, navigating through web pages can be easily managed using the built-in methods for page navigation. By leveraging these various timeout settings, developers can create more resilient automation scripts that handle asynchronous actions gracefully. By leveraging these frameworks, you can generate more comprehensive reports, including coverage statistics and formatted output, enhancing your testing workflow. Additionally, Playwright’s ability to run tests across multiple browsers in parallel accelerates feedback cycles, making it an ideal choice for teams employing modern CI practices. The use of browser containers and setting up specific environment variables ensures that testing environments remain consistent across different stages of the development process. Additionally, Playwright supports browser contexts, enabling parallel testing within isolated instances of the same browser.
Playwright’s robust API provides a straightforward way to execute these actions with precision and ease, enhancing the overall testing process. By leveraging these actions, testers and developers can automate browser behaviors, allowing for efficient testing and validation of web functionalities. Playwright provides the `frameLocator()` method, which allows developers to interact directly with the content of nested frames.