docstr: Gets the source line number of this object. None if `obj` code cannot be found.
          
docstr_tok: ["Gets","the","source","line","number","of","this","object",".","None","if","`","obj","`","code","can","not","be","found","."]
code: def get_line_no(self, obj):
      """Gets the source line number of this object. None if `obj` code cannot be found."""
      try:
          lineno = getsourcelines(obj)[1]
      except:
          # no code found
          lineno = None
      return lineno
  
file_path: keras-vis/docs/md_autogen.py
imports: import os
  import re
  import inspect
  from inspect import getdoc, getargspec, getsourcefile, getsourcelines, getmembers
  from collections import defaultdict
  import sys
label_desc: Use image node_id 2 for calling the MarkdownAPIGenerator obj's underlying member method code with example usage: obj.get_line_no(obj) and returns: lineno