Basic Use — SQLAlchemy 2.0.0b1 documentation
This section has moved to Declarative Mapping.
This section is covered by Mapping Table Columns
Accessing the MetaData
This section has moved to Accessing Table and Metadata.
As a convenience feature, the
declarative_base() sets a default constructor on classes which takes keyword arguments, and assigns them to the named attributes:
e = Engineer(primary_language='python')
This section is moved to Mapper Configuration Options with Declarative.
Defining SQL Expressions
See SQL Expressions as Mapped Attributes for examples on declaratively mapping attributes to SQL expressions.