malkab/python.md

## python.md

      
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              python.md
            
          
    Python Virtualenv

The interesting thing about virtualenv is that it allows a flexible NPM-like, in-project package management for Docker. Once the code is ready for production images, install them globally within the production image. Virtualenv is installed by default in our malkab/python Docker image.
Steps:

creating the virtualenv:

virtualenv libpyexample

activating:

. libpyexample/bin/activate

list packages installed:

pip list
Jupyter

To install:
pip3 install jupyter
To run locally, launch it in the folder containing the notebooks:
jupyter notebook
All notebooks present in the folder will be adquired, and all new ones created will be put in it.
Command Mode Shortcuts (press ESC to enable this mode):


Key
Command


Enter
Enter edit mode.


Shift-Enter
Run cell, select below.


Ctrl-Enter
Run cell.


Alt-Enter
Run cell, insert below.


Y
 To code.


M
To Markdown.


R
To raw.


1,2,3,4,5,6
To heading 1,2,3,4,5,6.


Up/K
 Select cell above.


Down/J
Select cell below.


A/B
Insert cell above/below.


X 
Cut selected cell.


C
 Copy selected cell.


Shift-V
 Paste cell above.


V
 Paste cell below.


Z
Undo last cell deletion.


D,D
 Delete selected cell.
Key	Command
Enter	Enter edit mode.
Shift-Enter	Run cell, select below.
Ctrl-Enter	Run cell.
Alt-Enter	Run cell, insert below.
Y	To code.
M	To Markdown.
R	To raw.
1,2,3,4,5,6	To heading 1,2,3,4,5,6.
Up/K	Select cell above.
Down/J	Select cell below.
A/B	Insert cell above/below.
X	Cut selected cell.
C	Copy selected cell.
Shift-V	Paste cell above.
V	Paste cell below.
Z	Undo last cell deletion.
D,D	Delete selected cell.