Pony ORM
Pony ORM is a powerful Object-Relational Mapper (ORM) package that is written in pure Python. It is faster, easier to use, and performs operations with minimum effort. It provides automatic query optimization and a GUI database schema editor. It also supports automatic transaction management, automatic caching, and composite keys. Compared to raw SQL, ORM improves code readability, reduces repetitive query writing, helps manage database relationships more easily, and can reduce common SQL errors in application development. Pony ORM uses Python generator expressions, which are translated into SQL. We can install it using pip:
pip install pony
Let’s see an example of Object-relational mapping using pony:
# Import pony module
from pony.orm import *
# Create database
db = Database()
# Define entities
class Emp(db.Entity):
eid = PrimaryKey(int,auto=True)
salary = Required(int)
# Check entity definition
show(Emp)
# Bind entities to MySQL database
db...
