feat(python): encode positional-only arguments in signatures #4197
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Now that Python 3.7 reached end-of-life, and since Python 3.8 and greater have support for positional-only argument notation (any argument before a `/` delimiter may only be passed positionally), adjust code generation to leverage this feature in order to address issues where inheritance hierarchies would rename parameters, which is a non-issue in all languages but Python, where those could always be provided as keyword arguments before. Fixes #2927 BREAKING CHANGE: the generated Python code now requires Python 3.8 or later and encodes positional arguments as positional-only, making keyword-style usage impossible. Users who used the keyword-style convention need to update their code to use the positional syntax instead.
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# Conflicts: # packages/jsii-pacmak/test/generated-code/__snapshots__/target-python.test.js.snap
Is it necessary to rename them? I think it would be much better to keep keyword-style parameters and just use the parameter names consistently. For me it is a great benefit of Python and in many cases it would be even better to have keyword-style-only parameters other than positional-only. |
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This might not be the desired solution. See #2927 (comment) |
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Now that Python 3.7 reached end-of-life, and since Python 3.8 and greater have support for positional-only argument notation (any argument before a
/delimiter may only be passed positionally), adjust code generation to leverage this feature in order to address issues where inheritance hierarchies would rename parameters, which is a non-issue in all languages but Python, where those could always be provided as keyword arguments before.Fixes #4541
BREAKING CHANGE: the generated Python code now requires Python 3.8 or later and encodes positional arguments as positional-only, making keyword-style usage impossible. Users who used the keyword-style convention need to update their code to use the positional syntax instead.
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.