pytest vs TestNG: What are the differences?
What is pytest? A full-featured Python testing tool to help you write better programs. A framework makes it easy to write small tests, yet scales to support complex functional testing for applications and libraries. It is a mature full-featured Python testing tool.
What is TestNG? A testing framework inspired from JUnit and NUnit. It is a testing framework designed to simplify a broad range of testing needs, it covers all categories of tests: unit, functional, end-to-end, integration, etc.Run your tests in arbitrarily big thread pools with various policies available (all methods in their own thread, one thread per test class, etc.
pytest and TestNG can be categorized as "Testing Frameworks" tools.
pytest is an open source tool with 4.59K GitHub stars and 1.11K GitHub forks. Here's a link to pytest's open source repository on GitHub.