code: def _get_base_url(base_url, api, version):
          
          format_args = {}
  
          if "{api}" in base_url:
              if api == "":
                  base_url = base_url.replace('{api}.', '')
              else:
                  format_args['api'] = api
  
          if "{version}" in base_url:
              if version == "":
                  base_url = base_url.replace('/{version}', '')
              else:
                  format_args['version'] = version
  
          return base_url.format(api=api, version=version)
docs: create the base url for the api
  
          Parameters
          ----------
          base_url : str
              format of the base_url using {api} and {version}
          api : str
              name of the api to use
          version : str
              version of the api
  
          Returns
          -------
          str
              the base url of the api you want to use