Development Tools¶
The modules described in this chapter help you write software. For example, thepydoc module takes a module and generates documentation based on themodule’s contents. Thedoctest andunittest modules containsframeworks for writing unit tests that automatically exercise code and verifythat the expected output is produced.2to3 can translate Python 2.xsource code into valid Python 3.x code.
The list of modules described in this chapter is:
typing— Support for type hintspydoc— Documentation generator and online help systemdoctest— Test interactive Python examplesunittest— Unit testing frameworkunittest.mock— mock object libraryunittest.mock— getting started- Using Mock
- Mock Patching Methods
- Mock for Method Calls on an Object
- Mocking Classes
- Naming your mocks
- Tracking all Calls
- Setting Return Values and Attributes
- Raising exceptions with mocks
- Side effect functions and iterables
- Mocking asynchronous iterators
- Mocking asynchronous context manager
- Creating a Mock from an Existing Object
- Patch Decorators
- Further Examples
- Mocking chained calls
- Partial mocking
- Mocking a Generator Method
- Applying the same patch to every test method
- Mocking Unbound Methods
- Checking multiple calls with mock
- Coping with mutable arguments
- Nesting Patches
- Mocking a dictionary with MagicMock
- Mock subclasses and their attributes
- Mocking imports with patch.dict
- Tracking order of calls and less verbose call assertions
- More complex argument matching
- Using Mock
- 2to3 - Automated Python 2 to 3 code translation
test— Regression tests package for Pythontest.support— Utilities for the Python test suitetest.support.script_helper— Utilities for the Python execution tests
See also the Python development mode: the-Xdev option andPYTHONDEVMODE environment variable.