title: 'module' object has no attribute 'OrderedDict' error in pymongo
body: <p>I'm very new to pymongo. In the following code,  </p>
  
  <pre><code>db = MySQLdb.connect(DB_HOST,DB_USR,DB_PWD,DB_NAME)
  cursor = db.cursor()
  query = "SELECT * FROM %s WHERE userid = \"%s\"" % (table, userID) 
  cursor.execute(query)
  colNames = [i[0] for i in cursor.description]
  rows = cursor.fetchall()
  objects_list = []
  # The below logic makes JSON objet based on fetch MySQL rows.
  for row in rows:
      d = collections.OrderedDict()
      index = 0
      for col in colNames:
          d[col] = row[index]
          index = index + 1
      objects_list.append(d)
  return objects_list
  </code></pre>
  
  <p>I'm getting the error, </p>
  
  <pre><code>trngl_advertise_perfm
  trngl_advertise_activity
  trngl_user_fblike
  Traceback (most recent call last):
  File "IngestDataToMongo.py", line 83, in &lt;module&gt;
  userData = getData(user[0], TABLES[i]) # Get data of each user.
  File "IngestDataToMongo.py", line 51, in getData
  d = collections.OrderedDict()
  AttributeError: 'module' object has no attribute 'OrderedDict'
  </code></pre>
  
  <p>Please tell me, how to remove the error.</p>