code: def cols_(df,col_list,func,*args,**kwargs):
      
      return _pd.DataFrame({col_name:func(df,col_name,*args,**kwargs) for col_name in col_list})
docs: Do a function over a list of columns and return the result
      Parameters:
      df - DataFrame
          DataFrame to operate on
      col_list - list of strings
          names of columns to coerce
      func - function
          function to use