ImportError: dynamic module does not define init function (init_tf2)

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Hello. I am trying to "import tf" in a python 2.7 terminal, but I am getting the following error. Please help me up, as I am unable to proceed further:

svdeepak99@Deepak-Strix:~/catkin_ws$ python
Python 2.7.17 (default, Nov  7 2019, 10:07:09) 
[GCC 7.4.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tf
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/ros/melodic/lib/python2.7/dist-packages/tf/__init__.py", line 30, in <module>
    from tf2_ros import TransformException as Exception, ConnectivityException, LookupException, ExtrapolationException
  File "/home/svdeepak99/catkin_ws/devel/lib/python3/dist-packages/tf2_ros/__init__.py", line 35, in <module>
    exec(__fh.read())
  File "<string>", line 38, in <module>
  File "/home/svdeepak99/catkin_ws/devel/lib/python3/dist-packages/tf2_py/__init__.py", line 35, in <module>
    exec(__fh.read())
  File "<string>", line 38, in <module>
ImportError: dynamic module does not define init function (init_tf2)
>>>

I am using ros melodic and Ubuntu 18.04 version. Thanks in advance.