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Filename :
psycopg3_ext.py
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from peewee import * try: import psycopg #from psycopg.types.json import Jsonb except ImportError: psycopg = None class Psycopg3Database(PostgresqlDatabase): def _connect(self): if psycopg is None: raise ImproperlyConfigured('psycopg3 is not installed!') conn = psycopg.connect(dbname=self.database, **self.connect_params) if self._isolation_level is not None: conn.isolation_level = self._isolation_level conn.autocommit = True return conn def get_binary_type(self): return psycopg.Binary def _set_server_version(self, conn): self.server_version = conn.pgconn.server_version if self.server_version >= 90600: self.safe_create_index = True def is_connection_usable(self): if self._state.closed: return False # Returns True if we are idle, running a command, or in an active # connection. If the connection is in an error state or the connection # is otherwise unusable, return False. conn = self._state.conn return conn.pgconn.transaction_status < conn.TransactionStatus.INERROR