TypeError: __init__() should return None, not 'GoogleSearch'

[icesonata]

Hi,
I want to reproduce your experiment using notebook you provide to run on Google Colab. However, when I run the following snippet in the notebook

from gg_search import GoogleSearch
ggsearch = GoogleSearch()
from relevance_ranking import rel_ranking
from reader import Reader
reader = Reader()

I got an error which I haven't figured out how to solve

TypeError: __init__() should return None, not 'GoogleSearch'

Full output detail

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-9-8a1fbb13a075> in <module>()
      1 from gg_search import GoogleSearch
----> 2 ggsearch = GoogleSearch()
      3 from relevance_ranking import rel_ranking
      4 from reader import Reader
      5 reader = Reader()

TypeError: __init__() should return None, not 'GoogleSearch'