code: def analyze_profile(self):
          
          profile_parser = ProfileParser()
          databases = self._get_requested_databases()
          connection = pymongo.MongoClient(self._db_uri,
                                           document_class=OrderedDict,
                                           read_preference=pymongo.ReadPreference.PRIMARY_PREFERRED)
  
          if databases == []:
              try:
                  databases = connection.database_names()
              except:
                  message = "Error: Could not list databases on server. Please " \
                            +         "check the auth components of your URI or provide " \
                            +         "a namespace filter with -n.\n"
                  sys.stderr.write(message)
                  databases = []
  
              for ignore_db in IGNORE_DBS:
                  if ignore_db in databases:
                      databases.remove(ignore_db)
  
          for database in databases:
  
              db = connection[database]
  
              profile_entries = db['system.profile'].find()
  
              for profile_entry in profile_entries:
                  self._process_query(profile_entry,
                                      profile_parser)
  
          self._output_aggregated_report(sys.stdout)
  
          return 0
docs: Analyzes queries from a given log file