code: def series_generator(self):
      return (
          self.obj._ixs(i, axis=1) for i in range(len(self.columns))
      )
  
imports: import warnings
  import numpy
  from pandas._libs import reduction
  import pandas.compat
  from pandas.util._decorators import cache_readonly
  from pandas.core.dtypes.common import is_dict_like, is_extension_type, is_list_like, is_sequence
  from pandas.core.dtypes.generic import ABCSeries
  from pandas.io.formats.printing import pprint_thing
label_desc: Use image node_id 2 for calling the FrameRowApply obj's underlying member method code with example usage: obj.series_generator() and returns: unknown