hi, i'am student from Argentina, Buenos Aires and i have lot of problem to search the answer to "how truncate all base data in the. SQLAlchemy 2 In Practice: Learn to program relational databases in Python step by step (English Edition) eBook: Grinberg, Miguel: [HOST]: Tienda. Re: Consulta error: remaining connection slots are reserved for non-replication superuser connections ; arpug · Re. SQLAlchemy Core Connection Provides functionality for a wrapped DB-API connection. 2) format wiithon db (preferencies --> utility and tools --> format DB). from sqlalchemy import * from [HOST]ative import declarative_base from [HOST] import scoped_session, sessionmaker, relation from zope. SQLAlchemy Core Dialect Defines the. Executes SQL statements. . It might be that the connection created by the first function is still active after you call it. You are not closing that. Many tiny python examples, ready to be used executing single files - davidam/python-examples. If the this doesn't solve your problem, open a new bug with all steps to reproduce it.