code: def pythonize_arguments(arg_str):
      
      out_args = []
      # If there aren't any arguments return the empty string
      if arg_str is None:
          return out_str
      args = arg_str.split(',')
      for arg in args:
          components = arg.split('=')
          name_and_type=components[0].split(' ')
          # There is probably type info
          if name_and_type[-1]=='' and len(name_and_type)>1:
              name=name_and_type[-2]
          else:
              name=name_and_type[-1]
          # if there are default parameters
          if len(components)>1:
              name+='='+components[1]
  
          out_args.append(name)
      return ','.join(out_args)
docs: Remove types from function arguments in cython