code: def expanding(
      trendline_options, x_raw, x, y, x_label, y_label, non_missing
  ):
      """Expanding trendline function
  
      The value of the `function` key of the `trendline_options` dict is the function to
      use (defaults to `mean`) and the value of the `function_args` key are taken to be
      its arguments as a dict. The remainder of  the `trendline_options` dict is passed as
      keyword arguments into the `pandas.Series.expanding` function.
      """
      return _pandas(
          "expanding", trendline_options, x_raw, y, non_missing
      )
  
imports: import pandas
  import numpy
label_desc: Use image node_id 5 for calling a global function with example usage: expanding(trendline_options, x_raw, x, y, x_label, y_label, non_missing) and returns: _pandas