title: jupyter-notebook, ImportError: cannot import name 'Type'
body: <p>I am a Windows user, and I have installed Python 3.6 on my computer. In order to use Jupyter notebooks, I downloaded atom. I already installed ipython and pandas. After entering the command <code>jupyter notebook</code> on the command-line, my browser doesn't open jupyter notebook, instead I get the follow error message:</p>
  
  <pre><code>[C:\Users\ELIDAD&gt;jupyter notebook
  Traceback (most recent call last):
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\runpy.py", line 170, in _run_module_as_main
      "__main__", mod_spec)
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\runpy.py", line 85, in _run_code
      exec(code, run_globals)
    File "C:\Users\ELIDAD\AppData\Local\Programs\Python\Python35\Scripts\jupyter-notebook.EXE\__main__.py", line 5, in &lt;module&gt;
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\notebook\__init__.py", line 25, in &lt;module&gt;
      from .nbextensions import install_nbextension
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\notebook\nbextensions.py", line 610, in &lt;module&gt;
      from .extensions import (
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\notebook\extensions.py", line 8, in &lt;module&gt;
      from tornado.log import LogFormatter
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\tornado\log.py", line 34, in &lt;module&gt;
      from tornado.escape import _unicode
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\tornado\escape.py", line 27, in &lt;module&gt;
      from tornado.util import unicode_type
    File "c:\users\elidad\appdata\local\programs\python\python35\lib\site-packages\tornado\util.py", line 21, in &lt;module&gt;
      from typing import (
  ImportError: cannot import name 'Type']
  </code></pre>
  
  <p>So, what is the problem? I am new to python and jupyter notebook. Thank you very much.</p>