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Mastering Geospatial Analysis with Python
book

Mastering Geospatial Analysis with Python

by Silas Toms, Paul Crickard, Eric van Rees
April 2018
Beginner to intermediate content levelBeginner to intermediate
440 pages
11h 36m
English
Packt Publishing
Content preview from Mastering Geospatial Analysis with Python

Declaring the session

From the app.config dictionary, the database connection string is passed to the create_engine function. Once engine is bound to the sessionmaker, a session can be initiated:

from application import app# Connect to the database called chapter11 using SQLAlchemy functionsengine = create_engine(app.config['SQLALCHEMY_DATABASE_URI'])Session = sessionmaker(bind=engine)session = Session()Base = declarative_base()

A Python class called Base is created from the declarative_base() function. The Base class is then used to subclass all application classes.

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Publisher Resources

ISBN: 9781788293334Supplemental Content