I am done

rl/Lib/site-packages/sympy/series/__init__.py

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+"""A module that handles series: find a limit, order the series etc.
+"""
+from .order import Order
+from .limits import limit, Limit
+from .gruntz import gruntz
+from .series import series
+from .approximants import approximants
+from .residues import residue
+from .sequences import SeqPer, SeqFormula, sequence, SeqAdd, SeqMul
+from .fourier import fourier_series
+from .formal import fps
+from .limitseq import difference_delta, limit_seq
+
+from sympy.core.singleton import S
+EmptySequence = S.EmptySequence
+
+O = Order
+
+__all__ = ['Order', 'O', 'limit', 'Limit', 'gruntz', 'series', 'approximants',
+        'residue', 'EmptySequence', 'SeqPer', 'SeqFormula', 'sequence',
+        'SeqAdd', 'SeqMul', 'fourier_series', 'fps', 'difference_delta',
+        'limit_seq'
+        ]