A nice __repr__ for the ast.* classes?
Wouldn't it be nice if this
import ast print repr(ast.parse("(1 + 1)").body[0].value) <_ast.BinOp object at 0x0000000001E94B38>
printed something more useful?
print repr(ast.parse("(1 + 1)").body[0].value) BinOp(left=Num(n=1), op=Add(), right=Num(n=1))
I've been doing some work on macropy https://github.com/lihaoyi/macropy, which uses the ast.* classes extensively, and it's annoying that we have to resort to dirty-tricks like monkey-patching the AST classes (for CPython 2.7) or even monkey-patching __builtin__.repr (to get it working on PyPy) just to get eval(repr(my_ast)) == my_ast to hold true. And a perfectly good solution already exists in the ast.dump() method, too! (It would also be nice if "==" did a structural comparison on the ast.* classes too, but that's a different issue). -Haoyi
participants (5)
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anatoly techtonik
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Guido van Rossum
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Haoyi Li
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Nick Coghlan
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Steven D'Aprano