code: def std_series(
      series,
      axis=None,
      skipna=True,
      level=None,
      ddof=1,
      combine_size=None,
      method=None,
  ):
      ret = sqrt(
          var_series(
              series,
              axis=axis,
              skipna=skipna,
              level=level,
              ddof=ddof,
              combine_size=combine_size,
              method=method,
          )
      )
      return ret
  
imports: from ...tensor.arithmetic import sqrt
  from .var import var_dataframe, var_series
label_desc: Use image node_id 2 for calling a global function with example usage: std_series(series, axis, skipna, level, ddof, combine_size, method) and returns: ret