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我是 python 新手，但它似乎是一种有趣的语言，所以我想继续学习它。

我一直在寻找关于这个主题的信息，但我似乎找不到任何像样的来源。我已经安装了 Python3.3、Pymysql、SQLAlchemy、(Pyramid) 和 MySQL。

使用此连接字符串使用 pymysql 连接到数据库可以正常工作。我使用 pymysql 是因为我想对数据库 (gevent) 进行异步调用，并且我需要 SQLAlchemy 以便可以进行对象映射。

我目前正在 pythonWin 屏幕中测试我们是否可以连接到我们的数据库。

import pymysql    
con = pymysql.connect(db='dbeerste', user='admin', passwd='admin', host='localhost', port=3306)    
cur = con.cursor(); 
cur.execute("SELECT * FROM dbeerste.tabel1;")

将这两个结合起来似乎对我不起作用。

import pymysql
import sqlalchemy
engine = sqlalchemy.create_engine("mysql+pymysql://admin:admin@127.0.0.1/dbeerste")
engine.connect()
Traceback (most recent call last):
  File "<interactive input>", line 1, in <module>
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 1651, in connect
    return self._connection_cls(self, **kwargs)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 59, in __init__
    self.__connection = connection or engine.raw_connection()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 1709, in raw_connection
    return self.pool.unique_connection()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\pool.py", line 220, in unique_connection
    return _ConnectionFairy(self).checkout()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\pool.py", line 425, in __init__
    rec = self._connection_record = pool._do_get()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\pool.py", line 777, in _do_get
    con = self._create_connection()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\pool.py", line 225, in _create_connection
    return _ConnectionRecord(self)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\pool.py", line 322, in __init__
    exec_once(self.connection, self)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\event.py", line 381, in exec_once
    self(*args, **kw)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\event.py", line 398, in __call__
    fn(*args, **kw)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\strategies.py", line 168, in first_connect
    dialect.initialize(c)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\dialects\mysql\base.py", line 2052, in initialize
    default.DefaultDialect.initialize(self, connection)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\default.py", line 172, in initialize
    self._get_default_schema_name(connection)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\dialects\mysql\base.py", line 2019, in _get_default_schema_name
    return connection.execute('SELECT DATABASE()').scalar()
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 664, in execute
    params)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 808, in _execute_text
    statement, parameters
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\base.py", line 871, in _execute_context
    context)
  File "C:\Python33\lib\site-packages\sqlalchemy-0.8.0b2-py3.3.egg\sqlalchemy\engine\default.py", line 322, in do_execute
    cursor.execute(statement, parameters)
  File "C:\Python33\lib\site-packages\pymysql3-0.4-py3.3.egg\pymysql\cursors.py", line 96, in execute
    #query = query % conn.escape(args)
TypeError: unsupported operand type(s) for %: 'bytes' and 'tuple'

谁能帮我解决这个问题，我会很感激任何回应

ps：由于我是语言新手，我很想听到任何回应，如果有人有任何建议以另一种方式做到这一点，请输入您的意见。我不拘泥于很多东西，只有 Python3.3、异步调用和使用 MVC。

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