code: def std_dataframe(
      df,
      axis=None,
      skipna=True,
      level=None,
      ddof=1,
      numeric_only=None,
      combine_size=None,
      method=None,
  ):
      ret = sqrt(
          var_dataframe(
              df,
              axis=axis,
              skipna=skipna,
              level=level,
              ddof=ddof,
              numeric_only=numeric_only,
              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 1 for calling a global function with example usage: std_dataframe(df, axis, skipna, level, ddof, numeric_only, combine_size, method) and returns: ret