1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
.. _virtualenv-heading:
Virtualenv
=========================
Why Use Virtualenv?
-------------------------
You should use `Virtualenv <https://virtualenv.pypa.io/en/latest/>`_ because:
* It allows you to install multiple versions of the same dependency.
* If you have an operating system version of Python, it prevents you from changing its dependencies and potentially messing up your os.
How to Use Virtualenv
-----------------------------
Create your project folder, then a virtualenv within it::
$ mkdir myproject
$ cd myproject
$ python3 -m venv .venv
Now, whenever you want to work on a project, you only have to activate the
corresponding environment.
.. tabs::
.. group-tab:: OSX/Linux
.. code-block:: text
$ . .venv/bin/activate
(venv) $
.. group-tab:: Windows
.. code-block:: text
> .venv\scripts\activate
(venv) >
You are now using your virtualenv (notice how the prompt of your shell has changed to show the active environment).
To install packages in the virtual environment::
$ pip install click
And if you want to stop using the virtualenv, use the following command::
$ deactivate
After doing this, the prompt of your shell should be as familiar as before.
|
