pysandbox breakout attempt (it didn't work)

getmeout.py

types_checked = set()
remaining_types = set([int, dict, set, buffer, file, type])

# Try to call all the methods on an object x
def call_all_methods(x):
    failures = set(dir(x))
    successes = set()
    results = set()
    for num_args in [0, 1, 2, 3]:
        args = range(1, num_args+1)
        new_failures = set()
        for method in failures:
            f = getattr(x, method)
            if not hasattr(f, '__call__'):
                # it isn't a function
                results.add((method, type(f)))
                successes.add(method)
                continue
            try:
                res = f(*args)
                results.add((method, type(res)))
                successes.add(method)
            except:
                new_failures.add(method)
                #print "Failure", method
        failures = new_failures
    return set([t for _, t in results])
    #return successes, failures, results

# try to get all the types we can
while len(remaining_types) > 0:
    our_type = remaining_types.pop()
    try:
        new_types = call_all_methods(our_type())
    except:
        print "=(", our_type
    types_checked.add(our_type)
    actual_new_types = new_types.difference(types_checked)
    remaining_types = remaining_types.union(actual_new_types)

print types_checked