Python Crash Course: A Hands-On, Project-Based Introduction to Programming

by Eric Matthes

version of Python

pip install --user virtualenv

Change to the learning_log

environment set up, we need to activate it with the following command:

learning_log$ source ll_env/bin/activate

When the environment is active, you’ll see the name of the environment in parentheses,

To stop using a virtual environment, enter deactivate:

pip install Django

There’s no need to use the --user flag,

that Django will be available only when the environment is active.

(dir on Windows)

db.sqlite3 learning_log ll_env manage.py

ls command shows that Django created another file called db.sqlite3 ➋. SQLite is a

The Django Admin Site When you define models for an app, Django makes it easy for you to work with your models through the admin site.

Learning Log is fully functional now, but it has no styling and runs only on your local machine.

$ python --version

Python on Windows

python --version

Adding Python to Your Path Variable

Control Panel,

System and Security,

System. Click Advanced Syste...

Environment Va...

Click Edit.

snapshots

reverting

make mistakes without worrying about ruining your

Git is the most popular version

Ignoring Files

.pyc

we don’t need Git to keep tra...

These files are stored in a directory call...

.gitignore—with a dot at the beginning o...

.gitignore

git init

git status

In Git, a branch is a version of the project you’re working

commit is a snapshot of the project at a particular point in time.

git add .

Making a Commit

git commit -m "message"

git log

git log --pretty=oneline

git_practice$ git commit -am "Extended greeting."

-a flag tells Git to add all modified files in the repository to the current commit.

The -m flag tells Git to record a message in the log for this commit.

git status

instead of committing the change, we want to revert back

The command git checkout allows you to work with any previous commit.

out any commit in your log, not just the most recent, by including the first six characters of the reference ID