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by SEMW
4448 days ago
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> See, when they invented new web browsers, the old websites still worked on them! Yeah. But only because they rendered the old websites in various quirks modes[1] that emulated the rendering engines of the old web browsers. Thankfully, web browser developers did not share the analagous mindset to the people saying 'lets stick with python2-compatible semantics forever', or we'd still be writing sites that had to be backwards-compatible with IE6, instead of having the option to specify a modern doctype and use IE6-incompatible markup (the analogy to using a python3 shebang line and writing python2-incompatible code). [1] https://en.wikipedia.org/wiki/Quirks_mode |
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The sites worked. Quirks mode is now being phased out, but it served its purpose. The analogy Im making is obvious:
Python 3 should have run python 2 code and slowly rolled old semantics into depreciation; this whole mess could never have existed.
Its not as simple as 'just port your code and run python3'