Stumped with inheritance, how to get an inherited method to return the derived class instead of the base class

• portion

  2 453 4.6 Python

  portion, a Python library providing data structure and operations for intervals.

$ pip install git+https://github.com/AlexandreDecan/portion.git Collecting git+https://github.com/AlexandreDecan/portion.git Cloning https://github.com/AlexandreDecan/portion.git to /tmp/pip-req-build-241lrtyw Running command git clone -q https://github.com/AlexandreDecan/portion.git /tmp/pip-req-build-241lrtyw Installing build dependencies ... done Getting requirements to build wheel ... done Preparing wheel metadata ... done Requirement already satisfied: sortedcontainers~=2.2 in /home/wbuntu/.local/lib/python3.8/site-packages (from portion==2.2.0.dev0) (2.4.0) Building wheels for collected packages: portion Building wheel for portion (PEP 517) ... done Created wheel for portion: filename=portion-2.2.0.dev0-py3-none-any.whl size=23786 sha256=7b8c438ffde61d8db70c28d4c5206530df206b00d6b0e9c39670481d10113efa Stored in directory: /tmp/pip-ephem-wheel-cache-3h6qvw2a/wheels/3f/9f/f4/e80d25371752004605bd857cc85b8056b77ca11268f316e6aa Successfully built portion Installing collected packages: portion Attempting uninstall: portion Found existing installation: portion 2.1.6 Uninstalling portion-2.1.6: Successfully uninstalled portion-2.1.6 Successfully installed portion-2.2.0.dev0 $ python3 >>> import timecode >>> t1 = timecode.TCInterval(20,30) >>> t2 = timecode.TCInterval(25,50) >>> t1|t2 TCInterval('0:00:20.000','0:00:50.000') >>> type(t1|t2)

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