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# System library imports.
from os.path import basename
# Django imports.
from django.core.management.base import BaseCommand
# Local imports.
from exam.models import Question, Quiz
def clear_exam():
"""Delete all questions from the database."""
for question in Question.objects.all():
question.delete()
for quiz in Quiz.objects.all():
quiz.delete()
def load_exam(filename):
"""Load questions and quiz from the given Python file. The Python file
should declare a list of name "questions" which define all the questions
in pure Python. It can optionally load a Quiz from an optional 'quiz'
object.
"""
# Simply exec the given file and we are done.
exec(open(filename).read())
if 'questions' not in locals():
msg = 'No variable named "questions" with the Questions in file.'
raise NameError(msg)
for question in questions:
question.save()
if 'quiz' in locals():
quiz.save()
class Command(BaseCommand):
args = '<q_file1.py q_file2.py>'
help = '''loads the questions from given Python files which declare the
questions in a list called "questions".'''
def handle(self, *args, **options):
"""Handle the command."""
# Delete existing stuff.
clear_exam()
# Load from files.
for fname in args:
self.stdout.write('Importing from {0} ... '.format(basename(fname)))
load_exam(fname)
self.stdout.write('Done\n')
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