Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The first() and all() methods return a value and therefore end the chain."

A block of code is set as follows:

class User(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    username = db.Column(db.String(255))
    password = db.Column(db.String(255))
    posts = db.relationship(
        'Post',
        backref='user',
        lazy='dynamic'
    )

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

from flask.ext.sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config.from_object(DevConfig)
db = SQLAlchemy(app)

Any command-line input or output is written as follows:

$ python manage.py db init

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Hit another button that says Download Bootstrap and you will start to download a Zip file."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.