René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"check_function() not working as documented (or what am I missing?)","articleBody":"Hello!\r\n\r\nJust recently stumbled across this project in conjunction with datacamp-light, and I'm really keen to incorporate into some online assignments for my students.\r\n\r\nHowever, I'm having trouble using `check_function()` in my SCT. Can't even get the first example in under [\"Basic functionality\" (in your docs](https://pythonwhat.readthedocs.io/en/latest/articles/checking_function_calls.html#basic-functionality)) to work.\r\n\r\nHere's my markup:\r\n\r\n```html\r\n\u003cdiv data-datacamp-exercise data-lang=\"python\"\u003e\r\n  \u003ccode data-type=\"sample-code\"\u003e\r\n\r\n    round(2.718282, ndigits = 3)\r\n\r\n  \u003c/code\u003e\r\n  \u003ccode data-type=\"sct\"\u003e\r\n    Ex().check_function(\"round\").multi(\r\n      check_args(\"number\").has_equal_value(),\r\n      check_args(\"ndigits\").has_equal_value()\r\n    )\r\n  \u003c/code\u003e\r\n\u003c/div\u003e\r\n```\r\n\r\nThe result when I hit \"Run\" looks correct. But when I hit \"Submit, here's the error I get:\r\n\r\n```\r\nDataCamp encountered the following error:\r\nTraceback (most recent call last):\r\n  File \"/var/lib/python/site-packages/protobackend/output.py\", line 70, in wrapper\r\n    output = f(*args, **kwargs)\r\n  File \"/var/lib/python/site-packages/pythonbackend/commands.py\", line 63, in worker_dispatch\r\n    return d.dispatch(cmd)\r\n  File \"/var/lib/python/site-packages/protobackend/dispatcher.py\", line 28, in dispatch\r\n    cmd_output = cmd(pre_payload)\r\n  File \"/var/lib/python/site-packages/pythonbackend/Exercise.py\", line 123, in runSubmit\r\n    self.dc_force_diagnose,\r\n  File \"/var/lib/python/site-packages/pythonwhat/test_exercise.py\", line 67, in test_exercise\r\n    raise e\r\n  File \"/var/lib/python/site-packages/pythonwhat/test_exercise.py\", line 57, in test_exercise\r\n    exec(sct, sct_cntxt)\r\n  File \"\u003cstring\u003e\", line 1, in \u003cmodule\u003e\r\n  File \"/var/lib/python/site-packages/protowhat/sct_syntax.py\", line 258, in __call__\r\n    ChainedCall(self.function, args, kwargs), previous=self.chain\r\n  File \"/var/lib/python/site-packages/protowhat/sct_syntax.py\", line 225, in __init__\r\n    self._state = chained_call(state)\r\n  File \"/var/lib/python/site-packages/protowhat/sct_syntax.py\", line 113, in __call__\r\n    return self.callable(state, *self.args, **self.kwargs)\r\n  File \"/var/lib/python/site-packages/protowhat/sct_syntax.py\", line 78, in wrapper\r\n    force=isinstance(error, InstructorError),\r\n  File \"/var/lib/python/site-packages/protowhat/failure.py\", line 88, in _debug\r\n    raise failure_type(state.get_feedback(FeedbackComponent(feedback)), state.state_history)\r\nprotowhat.failure.InstructorError: `check_function()` couldn't find a call of `round()` in the solution code. Make sure you get the mapping right!\r\n\r\nDebug on error:\r\nSCT function state history: `check_function`\r\nLast test: `\u003cFail {'result': False, 'feedback': \u003cFeedbackComponent {'append': True, 'message': \"`check_function()` couldn't find a call of `round()` in the solution code. Make sure you get the mapping right!\", 'kwargs': {}}\u003e}\u003e`\r\n```","author":{"url":"https://github.com/gordonje","@type":"Person","name":"gordonje"},"datePublished":"2020-02-03T21:53:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/394/pythonwhat/issues/394"}