code: def prt_js(js, sort_keys=True, indent=4):
      
      print(js2str(js, sort_keys, indent))
docs: Print Json in pretty format.
      There's a standard module pprint, can pretty print python dict and list.
      But it doesn't support sorted key. That why we need this func.
  
      Usage::
  
          >>> from weatherlab.lib.dataIO.js import prt_js
          >>> prt_js({"a": 1, "b": 2})
          {
              "a": 1,
              "b": 2
          }
  
      **中文文档**
  
      以人类可读的方式打印可Json化的Python对象。