Python 无法初始化peewee'；内存数据库_Python_Python 3.x_Peewee

Python 无法初始化peewee'；内存数据库

python python-3.x

Python 无法初始化peewee'；内存数据库,python,python-3.x,peewee,Python,Python 3.x,Peewee,我正在尝试设置内存数据库，以便使用peewee进行测试。但是，我无法初始化数据库： >>> import peewee >>> import Entities >>> db = peewee.SqliteDatabase(':memory:') >>> db.connect() True 上面这个没问题。然后我得到了以下错误： >>> db.bind(Entities.RouterSettings) Tr

我正在尝试设置内存数据库，以便使用peewee进行测试。但是，我无法初始化数据库：

>>> import peewee
>>> import Entities
>>> db = peewee.SqliteDatabase(':memory:')
>>> db.connect()
True

上面这个没问题。然后我得到了以下错误：

>>> db.bind(Entities.RouterSettings)
Traceback (most recent call last):
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2833, in execute_sql
    cursor = self.cursor(commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2819, in cursor
    self.connect()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2768, in connect
    raise InterfaceError('Error, database must be initialized '
peewee.InterfaceError: Error, database must be initialized before opening a connection.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 3008, in bind
    for model in models:
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 5630, in __iter__
    return iter(self.select())
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 6198, in __iter__
    self.execute()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 1698, in inner
    return method(self, database, *args, **kwargs)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 1769, in execute
    return self._execute(database)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 1943, in _execute
    cursor = database.execute(self)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2848, in execute
    return self.execute_sql(sql, params, commit=commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2842, in execute_sql
    self.commit()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2627, in __exit__
    reraise(new_type, new_type(*exc_args), traceback)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 178, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2833, in execute_sql
    cursor = self.cursor(commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2819, in cursor
    self.connect()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2768, in connect
    raise InterfaceError('Error, database must be initialized '
peewee.InterfaceError: Error, database must be initialized before opening a connection.

>db.bind（Entities.RouterSettings）
回溯（最近一次呼叫最后一次）：
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2833行，在execute\U sql中
cursor=self.cursor（提交）
游标中的文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2819行
self.connect（）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2768行，在connect中
raise InterfaceError（'错误，必须初始化数据库'
peewee.InterfaceError:错误，必须在打开连接之前初始化数据库。
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第3008行，在bind中
对于模型中的模型：
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第5630行，在__
返回iter（self.select（））
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第6198行，在__
self.execute（）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第1698行，在内部
返回方法（self、数据库、*args、**kwargs）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第1769行，在execute中
返回self.\u执行（数据库）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第1943行，在\u execute中
cursor=database.execute（self）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2848行，在execute中
返回self.execute_sql（sql，参数，commit=commit）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2842行，在execute\U sql中
self.commit（）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2627行，在退出时__
重新发布（新类型，新类型（*exc_参数），回溯）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第178行，在reraise中
通过_回溯（tb）提升值
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2833行，在execute\U sql中
cursor=self.cursor（提交）
游标中的文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2819行
self.connect（）
文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2768行，在connect中
raise InterfaceError（'错误，必须初始化数据库'
peewee.InterfaceError:错误，必须在打开连接之前初始化数据库。

Me实体是可以肯定的，因为我使用peewee管理sqlite数据库中的数据没有任何问题。当我尝试使用内存数据库创建测试时，它们出现了。当我尝试创建表时，也会发生相同的错误：

>>> db = peewee.SqliteDatabase(':memory:')
>>> db.connect()
True
>>> db.create_tables([Entities.RouterSettings], safe=True)
Traceback (most recent call last):
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2833, in execute_sql
    cursor = self.cursor(commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2819, in cursor
    self.connect()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2768, in connect
    raise InterfaceError('Error, database must be initialized '
peewee.InterfaceError: Error, database must be initialized before opening a connection.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2995, in create_tables
    model.create_table(**options)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 6012, in create_table
    cls._schema.create_all(safe, **options)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 5225, in create_all
    self.create_table(safe, **table_options)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 5111, in create_table
    self.database.execute(self._create_table(safe=safe, **options))
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2848, in execute
    return self.execute_sql(sql, params, commit=commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2842, in execute_sql
    self.commit()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2627, in __exit__
    reraise(new_type, new_type(*exc_args), traceback)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 178, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2833, in execute_sql
    cursor = self.cursor(commit)
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2819, in cursor
    self.connect()
  File "C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site-packages\peewee.py", line 2768, in connect
    raise InterfaceError('Error, database must be initialized '
peewee.InterfaceError: Error, database must be initialized before opening a connection.

db=peewee.SqliteDatabase（“：内存：”） >>>db.connect（）真的 >>>db.create_表（[Entities.RouterSettings]，safe=True）回溯（最近一次呼叫最后一次）：文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2833行，在execute\U sql中 cursor=self.cursor（提交）游标中的文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2819行 self.connect（）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2768行，在connect中 raise InterfaceError（'错误，必须初始化数据库' peewee.InterfaceError:错误，必须在打开连接之前初始化数据库。在处理上述异常期间，发生了另一个异常：回溯（最近一次呼叫最后一次）：文件“”，第1行，在文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2995行，位于create\U表格中模型。创建表格（**选项）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第6012行，位于create_表中 cls.\u schema.create\u all（安全，**选项）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第5225行，在create\u all中创建表格（安全，**表格选项）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第5111行，位于create_表中 self.database.execute（self.\u创建\u表（safe=safe，**选项））文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2848行，在execute中返回self.execute_sql（sql，参数，commit=commit）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2842行，在execute\U sql中 self.commit（）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2627行，在退出时__ 重新发布（新类型，新类型（*exc_参数），回溯）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第178行，在reraise中通过_回溯（tb）提升值文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2833行，在execute\U sql中 cursor=self.cursor（提交）游标中的文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2819行 self.connect（）文件“C:\Users\Kamil\AppData\Local\Programs\Python\Python37-32\lib\site packages\peewee.py”，第2768行，在connect中 raise InterfaceError（'错误，必须初始化数据库' peewee.InterfaceError:错误，必须初始化数据库

>>> import peewee
>>> test_db = peewee.SqliteDatabase(':memory:', pragmas={'foreign_keys': 1})
import Entities
>>> models = [Entities.RouterSettings]
>>> test_db.bind(models, bind_refs=False, bind_backrefs=False)
>>> test_db.connect()
True
>>> test_db.create_tables(models)