What are the different scopes of fixtures in pytest?

What are the different scopes of fixtures in pytest?

In pytest, fixtures can have different scopes: function, class, module, and session. Each scope determines how long the fixture will live.

Can you explain what each scope means?

Sure! The 'function' scope means the fixture is created anew for each test function. 'Class' scope means it's shared among all tests in a class. 'Module' scope shares it across all tests in a module, and 'session' scope shares it across all tests in a session.

When should I use session scope?

You should use session scope for expensive setup that you want to run only once for all tests, like initializing a database connection.

Are there any best practices for using fixtures?

Yes, it's best to keep fixtures focused and reusable, avoid using too many global fixtures, and document their purpose for clarity.