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autograders/mongodb/source/autograder.py

60 lines
1.7 KiB

import pymongo, json
# dbprep
fsroot = '/autograder/source/'
datasets = ['congress', 'bills']
db = pymongo.MongoClient('mongodb://127.0.0.1')['test']
def evaluate(query : str):
import re
query = re.sub(r'(\$?[\d\w]+)\s*:', r'"\1" :', query)
query = re.sub(r'[\r|\n]|.\s*pretty\s*\(\s*\)', '', query).strip()
return list(eval(query))[0] if query else None
for d in datasets:
with open(fsroot + d + '.json', encoding = 'utf-8') as f:
db[d].insert_many(json.load(f))
from solution import sols
answers = [evaluate(s) for s in sols]
# grading
from os import listdir
from importlib.util import module_from_spec, spec_from_file_location
subroot = '/autograder/submission/'
feedback = ''
submissions = [subroot + f for f in listdir(subroot) if f.strip().lower().endswith('.py')]
grade = 0
n_queries = len(sols)
if submissions:
submission = submissions[0]
for i in range(n_queries):
feedback += f'Query {i + 1}: '
try:
spec = spec_from_file_location('curr', submission)
module = module_from_spec(spec)
spec.loader.exec_module(module)
q = getattr(module, f'query{i + 1}')()
if evaluate(q) == answers[i]:
grade += 1
feedback += 'Correct.\n'
else:
feedback += 'Wrong Answer.\n'
except Exception:
feedback += 'Runtime Error.\n'
else:
feedback += 'No python file in submission.\n'
# output
results = {
'output': feedback,
'score': grade * 100 / n_queries,
'max_score': 100,
}
with open('/autograder/results/results.json', 'w') as res:
json.dump(results, res)