


Navigate to the PythonSettings.json file within the Local Settings folder. Within the Solution Explorer window, click the Show All Files icon to show all files in the current folder. Open your existing Python code using the Open a Local Folder option.

Under these circumstances, you'll need to use a PythonSettings.json file to configure testing. Visual Studio allows you to run and test existing Python code without a project, by opening a folder with Python code. Configure testing for Python without a project If the Test Explorer window is not already open, navigate to the toolbar and select Test > Test Explorer. Once you've saved your framework selection and settings, test discovery is initiated in the Test Explorer. See the pytest reference documentation for more details. For the pytest framework, testing options such as test location and filename patterns are specified using the standard pytest.This location, as well as the text pattern for identifying tests, can be modified on the Test tab to user specified values. For the unittest framework, the project's root directory is used for test discovery.From this tab, you can select the test framework that you want to use for your project. This opens the project designer, which allows you to configure tests through the Test tab. To specify a framework, right-click on the project name in Solution Explorer and select the Properties option. By default, no framework is selected when you create a Python project. Visual Studio supports two testing frameworks for Python, unittest and pytest (available in Visual Studio 2019 starting with version 16.3). Select the test framework for a Python project
