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API Details
Alembic's internal API has many public integration points that can be used to extend Alembic's functionality as well as to re-use its functionality in new ways. As the project has grown, more APIs are created and exposed for this purpose.
Direct use of the vast majority of API details discussed here is not
needed for rudimentary use of Alembic; the only API that is used
normally by end users is the methods provided by the .Operations
class, which is
discussed outside of this subsection, and the parameters that can be
passed to the .EnvironmentContext.configure
method, used when
configuring one's env.py
environment. However, real-world
applications will usually end up using more of the internal API, in
particular being able to run commands programmatically, as discussed in
the section /api/commands
.
overview environment migration config commands operations autogenerate script ddl