class_docstr: PaddleHub server
class_docstr_tok: ["PaddleHub","server"]
docstr: Get a module source by key
docstr_tok: ["Get","a","module","source","by","key"]
code: def get_source_by_key(self, key: str):
      """Get a module source by key"""
      return self.sources.get(key)
  
imports: import json
  import os
  import requests
  import threading
  import time
  import yaml
  from collections import OrderedDict
  from typing import List
  import paddle
  import paddlehub
  import paddlehub.config
  from paddlehub.config import cache_config
  from paddlehub.server import ServerSource, GitSource
  from paddlehub.utils import utils
label_desc: Use image node_id 7 for calling the HubServer obj's underlying member method code with example usage: obj.get_source_by_key(key) and returns: self