Linting and unit tests

- [Instructor] In the first stage of our CI/CD pipeline, … we handle linting and unit tests. … With linting, we can enforce coding standards, … like naming conventions, comments, and formatting. … It can also improve code quality … by detecting dangerous constructs like race conditions, … unused libraries, or typos in variable names. … Essentially, linting helps us catch errors … and potential problems early in the design cycle … when they're easy to debug and fix. … Unit tests are often the first tests … that are run against the project. … These tests check code functionality … at the component level, … making them useful for testing functions … before they're integrated. … And because they're run at a low level, … unit tests can expose problems … closer to where they originated, … and typically unit tests are fast running. … This means we can run them along with our other build steps … without slowing things down. … Let's take a look at how we've implemented linting … and unit tests in GitHub actions for our Python web app. …