PYTHON

pandas.core.series.series to dataframe

>>> s = pd.Series(["a", "b", "c"],
...               name="vals")
>>> s.to_frame()
  vals
0    a
1    b
2    c

series.Series to dataframe

df = pd.DataFrame([s])
print (df)
         product_id_y  count
6159402       1159730      1

pandas.core.frame.DataFrame to pandas.core.series.Series

>>> df = pd.DataFrame([list(range(5))], columns=["a{}".format(i) for i in range(5)])
>>> df
   a0  a1  a2  a3  a4
0   0   1   2   3   4
>>> df.iloc[0]
a0    0
a1    1
a2    2
a3    3
a4    4
Name: 0, dtype: int64
>>> type(_)
<class 'pandas.core.series.Series'>