JezK
Edit File: pymysql.py
# mysql/pymysql.py # Copyright (C) 2005-2023 the SQLAlchemy authors and contributors # <see AUTHORS file> # # This module is part of SQLAlchemy and is released under # the MIT License: https://www.opensource.org/licenses/mit-license.php r""" .. dialect:: mysql+pymysql :name: PyMySQL :dbapi: pymysql :connectstring: mysql+pymysql://<username>:<password>@<host>/<dbname>[?<options>] :url: https://pymysql.readthedocs.io/ Unicode ------- Please see :ref:`mysql_unicode` for current recommendations on unicode handling. .. _pymysql_ssl: SSL Connections ------------------ The PyMySQL DBAPI accepts the same SSL arguments as that of MySQLdb, described at :ref:`mysqldb_ssl`. See that section for examples. MySQL-Python Compatibility -------------------------- The pymysql DBAPI is a pure Python port of the MySQL-python (MySQLdb) driver, and targets 100% compatibility. Most behavioral notes for MySQL-python apply to the pymysql driver as well. """ # noqa from .mysqldb import MySQLDialect_mysqldb from ...util import langhelpers from ...util import py3k class MySQLDialect_pymysql(MySQLDialect_mysqldb): driver = "pymysql" supports_statement_cache = True description_encoding = None # generally, these two values should be both True # or both False. PyMySQL unicode tests pass all the way back # to 0.4 either way. See [ticket:3337] supports_unicode_statements = True supports_unicode_binds = True @langhelpers.memoized_property def supports_server_side_cursors(self): try: cursors = __import__("pymysql.cursors").cursors self._sscursor = cursors.SSCursor return True except (ImportError, AttributeError): return False @classmethod def dbapi(cls): return __import__("pymysql") def create_connect_args(self, url, _translate_args=None): if _translate_args is None: _translate_args = dict(username="user") return super(MySQLDialect_pymysql, self).create_connect_args( url, _translate_args=_translate_args ) def is_disconnect(self, e, connection, cursor): if super(MySQLDialect_pymysql, self).is_disconnect( e, connection, cursor ): return True elif isinstance(e, self.dbapi.Error): str_e = str(e).lower() return ( "already closed" in str_e or "connection was killed" in str_e ) else: return False if py3k: def _extract_error_code(self, exception): if isinstance(exception.args[0], Exception): exception = exception.args[0] return exception.args[0] dialect = MySQLDialect_pymysql