Python 烧瓶及；SQL Alchemy db.create_all（）检测unicode返回：%r

我正在尝试使用SQLAlchemy根据

当我尝试运行

db.create_all（）

时，出现以下错误：

（venv）[username@mdprojectname]$python
Python 2.7.9（默认值，2015年1月12日，10:50:37）
[GCC 4.4.7 20120313（Red Hat 4.4.7-11）]关于linux2
有关详细信息，请键入“帮助”、“版权”、“信用证”或“许可证”。
>>>从应用程序导入数据库
/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask\u-sqlalchemy/\u_-init\uuuchemy.py:800:UserWarning:sqlalchemy\u-TRACK\u修改会增加大量开销，并在将来默认情况下禁用。将其设置为True以抑制此警告。
warnings.warn（'SQLALCHEMY\u TRACK\u修改会增加大量开销，并且在将来默认情况下将被禁用。将其设置为True可抑制此警告。“）
>>>db.create_all（）
/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/engine/default.py:298:SAWarning:Exception试图检测unicode返回的异常：OperationalError（'（sqlite3.OperationalError）near"\X10 1\X0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3\xf0\x90\x80\xa0\xf8\x80\x81\x93\xf0\x90\x81\x96\xf0\xb0\x81\x92\xf0\x90\x81\x88\xfa\x80\x81\x92\xfc\x80\x80\X86\xfa\x90\x80\x90\x80\x80\x80\x80\X88\x80\x81\x93\xfb\x80\x81\xa1\xfb\x80\x81\xaf\xfc\x90\x81\x9f\xfe\x90\x80\x80：语法错误'，）
检测unicode返回：%r“%de）
/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/engine/default.py:298:SAWarning:Exception试图检测unicode返回的异常：OperationalError（'（sqlite3.OperationalError）near“\X10 1\X0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2\xf9\xb0\x81\xb3\xf0\x90\x80\xa0\xf8\x80\x81\x93\xf0\x90\x81\x96\xf0\xb0\x81\x92\xf0\x90\x81\x88\xfa\x80\x81\x92\xfc\x80\x80\xf6\xfa\x90\x80\xa9\xf0\x90\x80\xa0\x08\x80\x81\x93\xfb\xa0\x81\xa1\xfb\xa0\x81\xaf\xfc\x90\x81\x9f\xfc\xa0\x80\x80\x80：语法错误'，）
检测unicode返回：%r“%de）
回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask\u-sqlalchemy/\u_-init\u_uuuuuuuuuuu.py”，第972行，在create\u-all中
self.\u为所有表执行（应用程序、绑定、“创建所有表”）
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask\u-sqlalchemy/\uuuuuuuuu-init\uuuuuuuuuuu.py”，第964行，用于所有表的执行
op（绑定=自身获取引擎（应用，绑定），**额外）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/sql/schema.py”，第3695行，在create_all中
表=表）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/engine/base.py”，第1855行，在
使用self.\u可选\u连接\u ctx\u管理器（连接）作为连接：
文件“/usr/local/lib/python2.7/contextlib.py”，第17行，输入__
返回self.gen.next（）
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py”，第1848行，在“可选连接”ctx管理器中
使用self.context_connect（）作为连接：
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/engine/base.py”，第2039行，在上下文连接中
self.\u wrap\u pool\u connect（self.pool.connect，无），
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py”，第2078行，在_-wrap\u-pool\u-connect中
e、 方言（自我）
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py”，第1405行，在_handle\u dbapi\u exception\u noconnection中
exc_信息
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/util/compat.py”，第200行，源于
重新释放（类型（异常），异常，tb=exc\U tb，原因=原因）
文件“/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py”，第2074行，在_-wrap\u-pool\u-connect中
返回fn（）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第376行，在connect中
返回\u连接\u签出（自我）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第713行，在_checkout中
fairy=\u ConnectionRecord.checkout（池）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第480行，在签出中
rec=pool.\u do\u get（）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第1151行，在
返回self.\u创建\u连接（）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第323行，在创建连接中
返回连接记录（自身）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/pool.py”，第454行，在__
执行一次（self.connection，self）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/event/attr.py”，第246行，在exec_once中
自（*args，**kw）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/event/attr.py”，第256行，在调用中__
fn（*参数，**千瓦）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site packages/sqlalchemy/util/langhelpers.py”，go中第1319行
返回一次功率（*arg，**kw）
文件“/home/username/flask project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/strat
(venv)[username@md projectname]$ python
Python 2.7.9 (default, Jan 12 2015, 10:50:37) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from app import db
/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask_sqlalchemy/__init__.py:800: UserWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True to suppress this warning.
  warnings.warn('SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True to suppress this warning.')
>>> db.create_all()
/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/default.py:298: SAWarning: Exception attempting to detect unicode returns: OperationalError('(sqlite3.OperationalError) near "\xf1\x90\x81\x93\xf1\x90\x81\x8c\xf5\x80\x81\x83\xf0\xb0\x80\xa0\xf4\xb0\x81\x81\xfa\x80\x81\x94\xfd\x80\x80\xa7\xfc\xb0\x81\xa5\xf8\x80\x81\xb4\xfb\x80\x81\xb0\xfa\x90\x81\xa1\xf8\x80\x81\xae\xf9\x90\x81\xb2\xfd\x90\x81\xb4\xfb\xa0\x81\xb2\xf9\xb0\x81\xb3\xf0\x90\x80\xa0\xf8\x80\x81\x93\xf0\x90\x81\x96\xf0\xb0\x81\x92\xf0\x90\x81\x88\xfa\x80\x81\x92\xfc\x80\x80\xb6\xfa\x90\x80\xa9\xf0\x90\x80\xa0\xf8\x80\x81\x93\xfb\xa0\x81\xa1\xfb\xa0\x81\xaf\xfc\x90\x81\x9f\xfe\x90\x80\x80": syntax error',)
  "detect unicode returns: %r" % de)
/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/default.py:298: SAWarning: Exception attempting to detect unicode returns: OperationalError('(sqlite3.OperationalError) near "\xf1\x90\x81\x93\xf1\x90\x81\x8c\xf5\x80\x81\x83\xf0\xb0\x80\xa0\xf4\xb0\x81\x81\xfa\x80\x81\x94\xfd\x80\x80\xa7\xfc\xb0\x81\xa5\xf8\x80\x81\xb4\xfb\xa0\x81\xb5\xf8\xb0\x81\xa9\xf9\x80\x81\xaf\xf8\x80\x81\xa5\xf9\x90\x81\xb2\xfd\x90\x81\xb4\xfb\xa0\x81\xb2\xf9\xb0\x81\xb3\xf0\x90\x80\xa0\xf8\x80\x81\x93\xf0\x90\x81\x96\xf0\xb0\x81\x92\xf0\x90\x81\x88\xfa\x80\x81\x92\xfc\x80\x80\xb6\xfa\x90\x80\xa9\xf0\x90\x80\xa0\xf8\x80\x81\x93\xfb\xa0\x81\xa1\xfb\xa0\x81\xaf\xfc\x90\x81\x9f\xfc\xa0\x80\x80": syntax error',)
  "detect unicode returns: %r" % de)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask_sqlalchemy/__init__.py", line 972, in create_all
    self._execute_for_all_tables(app, bind, 'create_all')
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/flask_sqlalchemy/__init__.py", line 964, in _execute_for_all_tables
    op(bind=self.get_engine(app, bind), **extra)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 3695, in create_all
    tables=tables)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1855, in _run_visitor
    with self._optional_conn_ctx_manager(connection) as conn:
  File "/usr/local/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1848, in _optional_conn_ctx_manager
    with self.contextual_connect() as conn:
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 2039, in contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 2078, in _wrap_pool_connect
    e, dialect, self)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1405, in _handle_dbapi_exception_noconnection
    exc_info
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/util/compat.py", line 200, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 2074, in _wrap_pool_connect
    return fn()
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 376, in connect
    return _ConnectionFairy._checkout(self)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 713, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 480, in checkout
    rec = pool._do_get()
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 1151, in _do_get
    return self._create_connection()
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 323, in _create_connection
    return _ConnectionRecord(self)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/pool.py", line 454, in __init__
    exec_once(self.connection, self)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/event/attr.py", line 246, in exec_once
    self(*args, **kw)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/event/attr.py", line 256, in __call__
    fn(*args, **kw)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 1319, in go
    return once_fn(*arg, **kw)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/strategies.py", line 165, in first_connect
    dialect.initialize(c)
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 256, in initialize
    self._check_unicode_description(connection):
  File "/home/username/flask-project/projectname/venv/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 343, in _check_unicode_description
    ]).compile(dialect=self)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) near "???????3???￥": syntax error
>>> 

???????3???￥