--- title: "Sachin Pal (@sachinpydev) | Hashnode" description: "I am a self-taught Python developer who loves to write on Python Programming and quite obsessed with Machine Learning." url: "https://hashnode.com/@sachinpydev" --- @sachinpydev # Sachin Pal @sachinpydev · India · Joined January 2022 [Website](https://geekpython.in/) ### [Power-up API Testing with EchoAPI's AI](https://teamgeek.geekpython.in/power-up-api-testing-with-echoapis-ai?utm_source=hashnode&utm_medium=feed) When you’re building an application, one thing you can’t skip is API testing. Whether it’s a login flow, payment gateway, or a complex e-commerce workflow, ensuring your APIs behave correctly saves you from nasty surprises in production. I had alread... 9 min read · [teamgeek.geekpython.in](https://teamgeek.geekpython.in/power-up-api-testing-with-echoapis-ai?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/power-up-api-testing-with-echoapis-ai/68d56cb88ddfda6dd3206417) [Sep 25, 2025](https://hashnode.com/posts/power-up-api-testing-with-echoapis-ai/68d56cb88ddfda6dd3206417) ### [How to Install PyPy and Use it?](https://teamgeek.geekpython.in/how-to-install-pypy-and-use-it?utm_source=hashnode&utm_medium=feed) PyPy is an implementation of Python written in RPython (Reduced Python) language, and it is seen as a replacement for CPython. PyPy claims that it is almost a drop-in replacement for CPython and can beat it on speed and memory usage. It supports libr... 3 min read · [teamgeek.geekpython.in](https://teamgeek.geekpython.in/how-to-install-pypy-and-use-it?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/how-to-install-pypy-and-use-it/677be518327c4ae12c8d4287) [Jan 6, 2025](https://hashnode.com/posts/how-to-install-pypy-and-use-it/677be518327c4ae12c8d4287) ### [10 Useful yet Rarely Used OS Functions in Python](https://teamgeek.geekpython.in/10-useful-yet-rarely-used-os-functions-in-python?utm_source=hashnode&utm_medium=feed) You must have used functions provided by the os module in Python several times in your projects. These could be used to create a file, walk down a directory, get info on the current directory, perform path operations, and more. In this article, we’ll... 7 min read · [teamgeek.geekpython.in](https://teamgeek.geekpython.in/10-useful-yet-rarely-used-os-functions-in-python?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/10-useful-yet-rarely-used-os-functions-in-python/67360020e889aa4e78511bb2) [Nov 14, 2024](https://hashnode.com/posts/10-useful-yet-rarely-used-os-functions-in-python/67360020e889aa4e78511bb2) ### [How to Stream Video to Frontend in FastAPI](https://teamgeek.geekpython.in/how-to-stream-video-to-frontend-in-fastapi?utm_source=hashnode&utm_medium=feed) FastAPI is a fast and modern web framework known for its support for asynchronous REST API and ease of use. In this article, we’ll see how to stream videos on frontend in FastAPI. StreamingResponse Stream Local Video FastAPI provides a StreamingRespo... 7 min read · [teamgeek.geekpython.in](https://teamgeek.geekpython.in/how-to-stream-video-to-frontend-in-fastapi?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/how-to-stream-video-to-frontend-in-fastapi/672ae2e45751c3a5f2ab3c6a) [Nov 6, 2024](https://hashnode.com/posts/how-to-stream-video-to-frontend-in-fastapi/672ae2e45751c3a5f2ab3c6a) ### [How to Fix Circular Imports in Python](https://teamgeek.geekpython.in/how-to-fix-circular-imports-in-python?utm_source=hashnode&utm_medium=feed) Have you ever come across circular imports in Python? Well, it’s a very common code smell that indicates something’s wrong with the design or structure. Circular Import Example How does circular import occur? This import error usually occurs when two... 6 min read · [teamgeek.geekpython.in](https://teamgeek.geekpython.in/how-to-fix-circular-imports-in-python?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/how-to-fix-circular-imports-in-python/67266fce64322e9c5b27b7d5) [Nov 2, 2024](https://hashnode.com/posts/how-to-fix-circular-imports-in-python/67266fce64322e9c5b27b7d5)