40 REST API Interview Questions and Answers 2026

Explore online platforms like Real Python and Talk Python to Me for insightful podcasts, articles, and tutorials on advanced Python concepts. Understanding these frameworks https://uvik.io/ allows developers to build scalable and efficient web applications, leveraging ready-made components and best practices. Git allows for tracking changes in code, collaborating with teams, and reverting to previous versions when needed. In the context of Python development, Agile methodologies offer a structured yet adaptive framework for handling complex projects efficiently.

• They are different from regular functions in that they do not have a name and can only contain a single expression.
• In addition to solving these questions, prepare by training additional models and staying informed about current machine learning trends.
• These methods allow you to manage component behavior throughout its lifecycle.
• A common starting point is 10-15% of spark.executor.memory.

Xrange() and range() are quite similar in terms of functionality. If either of the values is a reference to other objects, just the reference addresses for the same are copied.Deep Copy copies all values recursively from source to target object, i.e. it even duplicates the objects referenced by the source object. Moreover, there are two ways of creating copies for the given object using the copy module –
Thread Pooling and Thread Spawning are two key concepts in multithreading. The inherent non-determinism of such environments makes it challenging to reproduce bugs consistently, hence the need for specialized testing strategies. It’s like having a global variable but with isolated instances for each thread. By controlling the initial number of permits and their distribution among threads, we can dictate execution order.

Can you explain the benefits and drawbacks of using multithreading in Java?

After marking, the collector can then identify and collect the unmarked objects, breaking the circular references and freeing up memory. It starts from the objects known to be in use, traverses through their references, and marks each visited object. This can pose a challenge for reference counting alone, as the reference counts of these objects never reach zero. Circular references occur when a group of objects reference each other in a cycle, forming an interconnected structure. It identifies and collects cycles of objects that reference each other, preventing memory leaks. When this count drops to zero, it’s a sign that the object is no longer needed, and the memory it occupies can be reclaimed.
This sets the viewport, user-agent, and touch support like a real device. Playwright allows you to emulate mobile devices using the built-in devices library, which includes presets for popular phones and tablets. Playwright does not support bypassing real CAPTCHA challenges like reCAPTCHA or hCaptcha, as they are designed to block bots and automation tools. If Playwright can’t find an element that’s visually present, it’s usually due to timing issues, incorrect selectors, or the element not being in an interactive state yet. Playwright allows you to control and handle timeouts at different levels, globally, per test, or per action.

What are lists and tuples? What is the key difference between the two?

Companies ask this question because efficient pagination is key when you deal with huge data sets via APIs. Companies ask this because file uploads are a common scenario and multipart encoding can trip you up. If a key is required, you can check and raise a clear error. You store the key in an environment variable and read it at runtime to avoid hardcoding secrets. Use the json keyword so requests handles headers and encoding.
Yes, Playwright supports parallel test execution, which significantly speeds up the testing process. Additionally, Playwright offers options to customize the waiting behavior, like setting a timeout or waiting for elements to be visible, hidden, or attached to the DOM. One common way to wait for an element is by using the `waitForSelector` method.
Complete the W3Schools coding course, strengthen your knowledge, and earn a certificate you can add to your CV, portfolio, and LinkedIn profile. You can study at W3Schools without creating an account. This tutorial supplements all explanations with clarifying examples. Many chapters in this tutorial end with an exercise where you can check your level of knowledge. Visualize records the whole run in a single pass, so enter the values now — one per line, in the order the program asks for them.