IronLanguages / IronLanguages/ironpython3

__radd__ should not be on str and list

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CPython compatibility testing
Dominant language
C#
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Description

For example:

assert "__radd__" not in dir(str)

My guess is that sequence types which define a + operator (which stands for concat) should only have __add__?

This causes a failure in CPython.test_descrtut.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the failing CPython.test_descrtut test and inspect how str and list expose their arithmetic attributes. Compare the observed behavior with the expected Python behavior in the issue. Done means radd is absent from both types and the cited test passes.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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