old_contents: from flask.ext.wtf import Form
  from wtforms import IntegerField, BooleanField
  
  from flask import Blueprint, send_from_directory
  from flask import Flask, redirect, url_for, session, request, jsonify, g,\
                    make_response, Response, render_template
  from werkzeug.utils import secure_filename
                    
  from sqlalchemy import Date, cast, func, desc, or_
  
  from main import app
  
  blockpy = Blueprint('blockpy', __name__, url_prefix='/blockpy')
  
  @blockpy.route('/save/', methods=['GET', 'POST'])
  @blockpy.route('/save', methods=['GET', 'POST'])
  def save():
      # problem_id
      if 'problem_id' in request.args:
          problem_id = request.args['problem_id']
      else:
          return jsonify(success=False, message="No problem ID given.")
      # user_id
      if g.user:
          user_id = g.user.id
      else:
          return jsonify(success=False, message="You are not logged in.")
      # values
      code = request.args.get('code', '')
      correct = request.args.get('correct', 'false') == "true"
      
      # Do saving
      return jsonify(success=True)
      
  @blockpy.route('/load/', methods=['GET', 'POST'])
  @blockpy.route('/load', methods=['GET', 'POST'])
  def load():
      return jsonify(success=True, data={'code': '', 'completed': '', 'timestamp': ''})
new_contents: from flask.ext.wtf import Form
  from wtforms import IntegerField, BooleanField
  
  from flask import Blueprint, send_from_directory
  from flask import Flask, redirect, url_for, session, request, jsonify, g,\
                    make_response, Response, render_template
  from werkzeug.utils import secure_filename
                    
  from sqlalchemy import Date, cast, func, desc, or_
  
  from main import app
  
  blockpy = Blueprint('blockpy', __name__, url_prefix='/blockpy')
  
  @blockpy.route('/save/', methods=['GET', 'POST'])
  @blockpy.route('/save', methods=['GET', 'POST'])
  def save():
      # problem_id
      if 'problem_id' in request.args:
          problem_id = request.args['problem_id']
      else:
          return jsonify(success=False, message="No problem ID given.")
      # user_id
      if g.user:
          user_id = g.user.id
      else:
          return jsonify(success=False, message="You are not logged in.")
      # values
      code = request.args.get('code', '')
      correct = request.args.get('correct', 'false') == "true"
      
      # Do saving
      return jsonify(success=True)
      
  @blockpy.route('/load/', methods=['GET', 'POST'])
  @blockpy.route('/load', methods=['GET', 'POST'])
  def load():
      return jsonify(success=True, data={'code': 'a=0', 'completed': 'false', 'timestamp': ''})
subject: Return some actual code