code: def docstring_headline(obj):
      if not obj.__doc__:
          return ""
      res = []
      for line in obj.__doc__.strip().splitlines():
          if line.strip():
              res.append(" " + line.strip())
          else:
              break
      return "".join(res).lstrip()
  
imports: import re
  import sys
label_desc: Use image node_id 5 for calling a global function with example usage: docstring_headline(obj) and returns: str, str