code: def dyndoc_insert(src):
      
      # manipulating docstrings this way is tricky due to indentation
      # the JSON needs leading whitespace to be interpreted correctly
      import json
      import re
  
      def mkblock(d, flag=0):
          # response, pretty formatted
          v = json.dumps(d, indent=2)
          if flag == 1:
              # strip the '[' and ']' in case of a list holding items
              # that stand on their own (example: tick records from a stream)
              nw = re.findall('.*?\[(.*)\]', v, flags=re.S)
              v = nw[0]
          # add leading whitespace for each line and start with a newline
          return "\n{}".format("".join(["{0:>16}{1}\n".format("", L)
                               for L in v.split('\n')]))
  
      def dec(obj):
          allSlots = re.findall("\{(_v3.*?)\}", obj.__doc__)
          docsub = {}
          sub = {}
          for k in allSlots:
              p = re.findall("^(_v3.*)_(.*)", k)
              p = list(*p)
              sub.update({p[1]: p[0]})
  
          for v in sub.values():
              for k in sub.keys():
                  docsub["{}_url".format(v)] = "{}".format(src[v]["url"])
                  if "resp" == k:
                      docsub.update({"{}_resp".format(v):
                                     mkblock(src[v]["response"])})
                  if "body" == k:
                      docsub.update({"{}_body".format(v):
                                     mkblock(src[v]["body"])})
  
                  if "params" == k:
                      docsub.update({"{}_params".format(v):
                                     mkblock(src[v]["params"])})
                  if "ciresp" == k:
                      docsub.update({"{}_ciresp".format(v):
                                     mkblock(src[v]["response"], 1)})
  
          obj.__doc__ = obj.__doc__.format(**docsub)
  
          return obj
  
      return dec
docs: docstring_insert - a decorator to insert API-docparts dynamically.