Bhishan:jupyter-notebook --version
Traceback (most recent call last):
  File "/Users/poudel/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 10, in <module>
    import sqlite3
  File "/Users/poudel/anaconda3/lib/python3.6/sqlite3/__init__.py", line 23, in <module>
    from sqlite3.dbapi2 import *
  File "/Users/poudel/anaconda3/lib/python3.6/sqlite3/dbapi2.py", line 27, in <module>
    from _sqlite3 import *
ImportError: dlopen(/Users/poudel/anaconda3/lib/python3.6/lib-dynload/_sqlite3.cpython-36m-darwin.so, 2): Symbol not found: _sqlite3_enable_load_extension
  Referenced from: /Users/poudel/anaconda3/lib/python3.6/lib-dynload/_sqlite3.cpython-36m-darwin.so
  Expected in: /usr/lib/libsqlite3.dylib
 in /Users/poudel/anaconda3/lib/python3.6/lib-dynload/_sqlite3.cpython-36m-darwin.so

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/poudel/anaconda3/bin/jupyter-notebook", line 7, in <module>
    from notebook.notebookapp import main
  File "/Users/poudel/anaconda3/lib/python3.6/site-packages/notebook/notebookapp.py", line 79, in <module>
    from .services.sessions.sessionmanager import SessionManager
  File "/Users/poudel/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 13, in <module>
    from pysqlite2 import dbapi2 as sqlite3
ModuleNotFoundError: No module named 'pysqlite2'