71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
# mysql/pymysql.py
|
|
# Copyright (C) 2005-2017 the SQLAlchemy authors and contributors
|
|
# <see AUTHORS file>
|
|
#
|
|
# This module is part of SQLAlchemy and is released under
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
|
|
|
"""
|
|
|
|
.. dialect:: mysql+pymysql
|
|
:name: PyMySQL
|
|
:dbapi: pymysql
|
|
:connectstring: mysql+pymysql://<username>:<password>@<host>/<dbname>\
|
|
[?<options>]
|
|
:url: http://www.pymysql.org/
|
|
|
|
Unicode
|
|
-------
|
|
|
|
Please see :ref:`mysql_unicode` for current recommendations on unicode
|
|
handling.
|
|
|
|
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.
|
|
|
|
"""
|
|
|
|
from .mysqldb import MySQLDialect_mysqldb
|
|
from ...util import langhelpers, py3k
|
|
|
|
|
|
class MySQLDialect_pymysql(MySQLDialect_mysqldb):
|
|
driver = 'pymysql'
|
|
|
|
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
|
|
|
|
def __init__(self, server_side_cursors=False, **kwargs):
|
|
super(MySQLDialect_pymysql, self).__init__(**kwargs)
|
|
self.server_side_cursors = server_side_cursors
|
|
|
|
@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')
|
|
|
|
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
|