code: def get_fpath(self, cachedir=None, cfgstr=None, ext=None):
          
          _dpath = self.get_cachedir(cachedir)
          _fname = self.get_prefix()
          _cfgstr = self.get_cfgstr() if cfgstr is None else cfgstr
          _ext =   self.ext if ext is None else ext
          fpath = _args2_fpath(_dpath, _fname, _cfgstr, _ext)
          return fpath
docs: Ignore:
              fname = _fname
              cfgstr = _cfgstr