import os, json

def path_convert(path):
   d = {}
   if os.path.isdir(path):
      d['text'] = os.path.basename(path)
      d['children'] = [ path_convert(os.path.join(path,x)) for x in sorted(os.listdir(path)) ]
   else:
      d['text'] = os.path.basename(path)
   return d

print(json.dumps([ path_convert(y) for y in sorted(os.listdir('.'))] , indent=4))