title: python: can improt package from command line but not from jupyter notebook
body: <p>I've gotten a problem where I'm trying to import the tabula package into jupyter notebooks.  I activated my conda virtual environment, pip installed tabula-py, and ran <code>pip freeze</code>.  It confirmed that tabula-py was installed.</p>
  <pre><code>certifi==2021.5.30
  distro==1.6.0
  et-xmlfile==1.1.0
  greenlet==1.1.0
  importlib-metadata==4.6.1
  keyring==23.0.1
  numpy==1.21.1
  openpyxl==3.0.7
  pandas==1.3.0
  pyodbc==4.0.31
  python-dateutil==2.8.2
  pytz==2021.1
  pywin32-ctypes==0.2.0
  six==1.16.0
  SQLAlchemy==1.4.21
  tabula-py==2.3.0
  wincertstore==0.2
  XlsxWriter==1.4.4
  zipp==3.5.0
  </code></pre>
  <p>While my virtual environment was active, I tested out importing the tabula package from the command line (<code>import tabula</code>).  Everything works!  I run <code>exit()</code> to get out of the python instance, then run <code>jupyter notebook</code> to bring up a jupyter notebook.  (still in my virtual environment)</p>
  <p>However, in jupyter my import statement no longer works, even though i didn't change anything.  I run <code>help('modules')</code> within jupyter, and now tabula doesn't exist in my list of packages???? I'm not sure why it isn't working.  I have the Java PATH set, and it works fine everywhere except jupyter notebook.</p>