What do you recommend guys for this error when I type in console ipython notebook and got 
ImportError: No module named notebook.notebookapp
?
I installed ipython notebook with pip and really I don't know what is going on.
What do you recommend guys for this error when I type in console ipython notebook and got 
ImportError: No module named notebook.notebookapp
?
I installed ipython notebook with pip and really I don't know what is going on.
 
    
    For 4.0 and above You need to install the notebook app separately from https://github.com/jupyter/notebook
pip install jupyter
 
    
     
    
    conda install jupyter will install latest jupyter along with other required dependencies 
The following packages will be downloaded:
package                    |            build
---------------------------|-----------------
mistune-0.7                |           py27_0         186 KB
jinja2-2.8                 |           py27_0         263 KB
jupyter_core-4.0.3         |           py27_0          25 KB
tornado-4.2.1              |           py27_0         515 KB
jupyter_client-4.0.0       |           py27_0          88 KB
nbformat-4.0.0             |           py27_0         112 KB
ipykernel-4.0.3            |           py27_0         111 KB
nbconvert-4.0.0            |           py27_0         266 KB
jupyter_console-4.0.0      |           py27_0          22 KB
notebook-4.0.1             |           py27_0         4.2 MB
qtconsole-4.0.0            |           py27_0         120 KB
ipywidgets-4.0.2           |           py27_0          93 KB
jupyter-1.0.0              |           py27_0           2 KB
------------------------------------------------------------
                                       Total:         6.0 MB
 
    
    This two commands will fix most problems for you:
sudo pip install --upgrade setuptools pip
sudo pip install --upgrade "ipython[all]"
 
    
    I got the same problem when upgrading ipython. This is a bug linked to the latest 4 version, I recommend you switch back to the stable version 3.2.1:
pip uninstall -y ipython
pip install ipython==3.2.1
-y option indicates "yes I want to uninstall" with no interactionif you are using python version 2
pip install jupyter
in case using python 3.x
pip3 install jupyter
to be on the safe side also check that notebook module is installed or not
pip install notebook
or
pip3 install notebok
 
    
    Install Specific Version:
pip install jupyter
Upgrade jupyter
sudo pip3 install --upgrade jupyter
Getting Dependency Error in Window 10 Use code: easy_install instead of pip install
easy_install jupyter 
Upgrade using easy install
sudo easy_install --upgrade  jupyter
On OSX System to install Module: Use code: brew install instead of pip install
brew install jupyter 
Without Using Pip :
 sudo apt-get install -y jupyter 
On CentOS7 or Linux Fedora:
yum -y install jupyter 
Or on Fedora try
sudo dnf install jupyter 
Command if Homebrew screws up your path on macOS:
python -m pip install jupyter 
For Python3 MacOs Homebrew screws
python3 -m pip install jupyter
Verify module from list MacOs
pip freeze | grep  jupyter
For Execute on Anaconda as your python package manager
 conda install -c anaconda jupyter 
 
    
    Go to the path that will appear for you for example: C:\Users\Soft\anaconda3\Scripts\jupyter-notebook-script.py and change notebook.notebookapp to just notebook.app. This worked for me.
 
    
    from the env path C:\Users\awatim\envs\ds2\Scripts\jupyter-notebook-script.py
Replacing notebook.notebookapp to just notebook.app is worked for me also
as above Abdelrahman Elaraby has mentioned same.