code: def show_help():
      str = "config <option>\n"
      str += "\tShow PaddleHub config without any option.\n"
      str += "option:\n"
      str += "reset\n"
      str += "\tReset config as default.\n\n"
      str += "server==[URL]\n"
      str += "\tSet PaddleHub Server url as [URL].\n\n"
      str += "log.level==[LEVEL]\n"
      str += "\tSet log level.\n\n"
      str += "log.enable==True|False\n"
      str += "\tEnable or disable logger in PaddleHub.\n"
      print(str)
  
file_path: PaddleHub/paddlehub/commands/config.py
imports: import argparse
  import ast
  import paddlehub.config
  from paddlehub.env import CONF_HOME
  from paddlehub.commands import register
label_desc: Use image node_id 2 for calling the ConfigCommand obj's underlying member method code with example usage: obj.show_help() without return types