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Allow common builtins such as sum and super by default - #40
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Co-Authored-By: Claude Opus 5.5 <[email protected]>
Correct solutions that use sum, any, all, super and similar builtins failed with a NameError unless the question whitelisted them. These builtins don't give student code anything that plain Python syntax doesn't. Co-Authored-By: Claude Opus 5.5 <[email protected]>
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* Add a guide for converting questions from the legacy Python grader Also document leading and trailing code, query_setup and the limits on setup code in the quick start, and fix the module-level timeout example, which used a variable the plugin doesn't read. Co-Authored-By: Claude Opus 5.5 <[email protected]> * Encourage moving leading, trailing and setup code into tests when converting Co-Authored-By: Claude Opus 5.5 <[email protected]> * Reorganize quick_start.md for new users and keep converting.md conversion-specific quick_start.md now starts with a first question, local testing and where code belongs, then the API reference. It fixes the list of default builtins and the examples that relied on bare asserts. converting.md links to it instead of repeating general guidance, rewrites the square example to avoid setup code, and calls out the restricted builtins. Co-Authored-By: Claude Opus 5.5 <[email protected]> * Recommend import_blacklist for blocking library functions Co-Authored-By: Claude Opus 5.5 <[email protected]> * Describe the default builtins from #40 Co-Authored-By: Claude Opus 5.5 <[email protected]> * Remove the note that blocking functions needs a newer release Co-Authored-By: Claude Opus 5.5 <[email protected]> --------- Co-authored-by: Claude Opus 5.5 <[email protected]>
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Student code only gets RestrictedPython's list of safe builtins, which leaves out many that correct solutions use. A solution like
sum(values) / len(values)fails withNameError: name 'sum' is not definedunless the question setsbuiltin_whitelist, and so does any class that callssuper().This adds
all,any,ascii,bin,bytearray,classmethod,Ellipsis,filter,format,frozenset,iter,next,NotImplemented,object,property,reversed,staticmethod,sum,superandtypeto the defaults. None of them gives student code anything it can't already do with plain syntax. Builtins that read or change namespaces and attributes by name (getattr,setattr,vars,globalsand the like), plusopen,eval,exec,compileandinput, stay blocked.The new
test_default_builtinsscenario fails without this change.test_helper_modules_workspaceusedsumas its example of a blocked builtin, so it usesvarsnow.The docs in #38 describe the current defaults, and I'll update them to match this PR.
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