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#!/usr/bin/python3
import os
import pickle
import sys
import django
from termcolor import colored
from .action import parse
from .edits import classify_edits, edit_graph, get_edits_from_traces
from .graph import graphviz
from .monkey import fix
from .prolog.engine import test
from .prolog.util import compose, decompose, stringify
from .util import indent
# Load django models.
os.environ['DJANGO_SETTINGS_MODULE'] = 'webmonkey.settings'
django.setup()
from django.contrib.auth.models import User
from tutor.models import Attempt, Problem, get_aux_code
# Get problem id from commandline.
if len(sys.argv) < 2:
print('usage: ' + sys.argv[0] + ' <pid>')
sys.exit(1)
pid = int(sys.argv[1])
# Analyze traces for this problem to get edits, submissions and queries.
problem = Problem.objects.get(pk=pid)
aux_code = get_aux_code(user=User.objects.get(pk=1), problem=problem)
attempts = Attempt.objects.filter(problem=problem)
traces = [a.trace for a in attempts]
edits, lines, submissions, queries = get_edits_from_traces(traces)
# Find incorrect submissions.
incorrect = []
for submission, count in sorted(submissions.items()):
if not test(problem.name, submission + '\n' + aux_code):
# This incorrect submission appeared in [count] attempts.
incorrect += [submission]*count
# Load current status (programs for which a hint was found).
try:
done = pickle.load(open('status-'+str(problem.pk)+'.pickle', 'rb'))
except:
done = []
def print_hint(solution, steps, fix_time, n_tested):
if solution:
print(colored('Hint found! Tested {} programs in {:.1f} s.'.format(n_tested, fix_time), 'green'))
print(colored(' Edits', 'blue'))
for line, (before, after) in steps:
print(' {}:\t{} → {}'.format(line, stringify(before), stringify(after)))
print(colored(' Final version', 'blue'))
print(indent(compose(*decompose(solution)), 2))
else:
print(colored('Hint not found! Tested {} programs in {:.1f} s.'.format(n_tested, fix_time), 'red'))
# Test fix() on incorrect student submissions.
if len(sys.argv) >= 3 and sys.argv[2] == 'test':
timeout = int(sys.argv[3]) if len(sys.argv) >= 4 else 10
print('Fixing {}/{} programs (timeout={})…'.format(
len([p for p in incorrect if p not in done]), len(incorrect), timeout))
for i, program in enumerate(incorrect):
if program in done:
continue
print(colored('Analyzing program {0}/{1}…'.format(i+1, len(incorrect)), 'yellow'))
print(indent(compose(*decompose(program)), 2))
solution, steps, fix_time, n_tested = fix(problem.name, program, edits, aux_code=aux_code, timeout=timeout)
if solution:
done.append(program)
print_hint(solution, steps, fix_time, n_tested)
print()
pickle.dump(done, open('status-'+str(problem.pk)+'.pickle', 'wb'))
print('Found hints for ' + str(len(done)) + ' of ' + str(len(incorrect)) + ' incorrect programs')
# Print info for this problem.
elif len(sys.argv) >= 3 and sys.argv[2] == 'info':
# With no additional arguments, print some stats.
if len(sys.argv) == 3:
print('Problem {} ({}): {} edits in {} traces, fixed {}/{} ({}/{} unique)'.format(
problem.pk, colored(problem.name, 'yellow'),
colored(str(len(edits)), 'yellow'), colored(str(len(traces)), 'yellow'),
colored(str(len([p for p in incorrect if p in done])), 'yellow'),
colored(str(len(incorrect)), 'yellow'),
colored(str(len(set(done))), 'yellow'),
colored(str(len(set(incorrect))), 'yellow')))
else:
if sys.argv[3] == 'users':
print(' '.join([str(a.user.pk) for a in attempts]))
# Print all observed edits and their costs.
elif sys.argv[3] == 'edits':
inserts, removes, changes = classify_edits(edits)
print('Inserts')
for after, cost in sorted(inserts.items(), key=lambda x: x[1]):
print(' {:.2f}\t{}'.format(cost, stringify(after)))
print('Removes')
for before, cost in sorted(removes.items(), key=lambda x: x[1]):
print(' {:.2f}\t{}'.format(cost, stringify(before)))
print('Changes')
for (before, after), cost in sorted(changes.items(), key=lambda x: x[1]):
print(' {:.2f}\t{} → {}'.format(cost,
stringify(before if before else [('INVALID', 'ε')]),
stringify(after if after else [('INVALID', 'ε')])))
# Print all student submissions not (yet) corrected.
elif sys.argv[3] == 'unsolved':
for p in sorted(set(incorrect)):
if p in done:
continue
print(indent(compose(*decompose(p)), 2))
print()
# Print all student queries and their counts.
elif sys.argv[3] == 'queries':
for query, count in queries.most_common():
print(' ' + str(count) + '\t' + query)
# Print the edit graph in graphviz dot syntax.
elif len(sys.argv) == 4 and sys.argv[2] == 'graph':
uid = int(sys.argv[3])
user = User.objects.get(pk=uid)
actions = parse(Attempt.objects.get(problem=problem, user=user).trace)
nodes, submissions, queries = edit_graph(actions)
def position(node):
return (node.data[1]*150, node.data[0]*-60)
def label(node):
return stringify(node.data[2])
def node_attr(node):
if node.ein and node.data[2] == node.ein[0].data[2]:
return 'color="gray", shape="point"'
return ''
def edge_attr(a, b):
if a.data[2] == b.data[2]:
return 'arrowhead="none"'
return ''
graphviz_str = graphviz(nodes, pos=position, label=label,
node_attr=node_attr, edge_attr=edge_attr)
print(graphviz_str)
# Run interactive loop.
else:
while True:
# Read the program from stdin.
print('Enter program, end with empty line:')
code = ''
try:
while True:
line = input()
if not line:
break
code += line + '\n'
except EOFError:
break
# Try finding a fix.
print(colored('Analyzing program…', 'yellow'))
solution, steps, fix_time, n_tested = fix(problem.name, code, edits, aux_code=aux_code, debug=True)
print_hint(solution, steps, fix_time, n_tested)
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