小白求助——功能-CTA回测触发异常，错误如下，跪求各路大神指点~~~~~

Traceback (most recent call last):
File "C:\vnstudio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 278, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_backtester\ui\widget.py", line 48, in init
self.init_strategy_settings()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_backtester\ui\widget.py", line 55, in init_strategy_settings
setting = self.backtester_engine.get_default_setting(class_name)
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_backtester\engine.py", line 239, in get_default_setting
return strategy_class.get_class_parameters()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\template.py", line 60, in get_class_parameters
class_parameters[name] = getattr(cls, name)
AttributeError: type object 'DemoStrategy' has no attribute 'fast_window'
——————————————————————————————————————————————————
点击CTA策略，错误如下
Traceback (most recent call last):
File "C:\vnstudio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 278, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\ui\widget.py", line 37, in init
self.cta_engine.init_engine()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 107, in init_engine
self.load_strategy_class()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 756, in load_strategy_class
self.load_strategy_class_from_folder(path2, "strategies")
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 771, in load_strategy_class_from_folder
self.load_strategy_class_from_module(strategy_module_name)
UnboundLocalError: local variable 'strategy_module_name' referenced before assignment

弄了两天了，求帮忙~~~~

升级到2.0.9

用Python的交易员 wrote:

升级到2.0.9
我用的就是2.0.9的呢

同样的问题 , 你解决了么?

亦佛亦魔 wrote:

用Python的交易员 wrote:

升级到2.0.9
我用的就是2.0.9的呢
C:\Users\Administrator.vntrader
里面数据让我清理了, 就好了.

五 wrote:

亦佛亦魔 wrote:

用Python的交易员 wrote:

升级到2.0.9
我用的就是2.0.9的呢
C:\Users\Administrator.vntrader
里面数据让我清理了, 就好了.
我把VN station卸载，把.vnstation，.vntrader文件夹删除，重新安装2.0.9都还是存在同样问题，而且关闭软件重新打开，又有其他错误，如下
Traceback (most recent call last):
File "C:\vnstudio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 278, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\ui\widget.py", line 37, in init
self.cta_engine.init_engine()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 106, in init_engine
self.init_rqdata()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 128, in init_rqdata
result = rqdata_client.init()
File "C:\vnstudio\lib\site-packages\vnpy\trader\rqdata.py", line 56, in init
use_pool=True,
File "C:\vnstudio\lib\site-packages\rqdatac\client.py", line 167, in init
remaining_days = quota["remaining_days"]
TypeError: 'NoneType' object is not subscriptable
小白入门太难了，按视频一步一步做都还出错

先排查这个错误：AttributeError: type object 'DemoStrategy' has no attribute 'fast_window'

你的策略类里，少了fast_window这个数据

老师，jupyter notebook回测已成功导入历史tick数据，但触发异常，提示如下：
2021-10-05 22:20:38.681919 历史数据加载完成，数据量：187454
2021-10-05 22:20:38.683421 触发异常，回测终止
2021-10-05 22:20:38.684922 Traceback (most recent call last):
File "c:\vnstudio\lib\site-packages\vnpy_ctastrategy\backtesting.py", line 228, in run_backtesting
self.callback(data)
TypeError: 'NoneType' object is not callable
请教如何处理？

hope1000million wrote:

老师，jupyter notebook回测已成功导入历史tick数据，但触发异常，提示如下：
2021-10-05 22:20:38.681919 历史数据加载完成，数据量：187454
2021-10-05 22:20:38.683421 触发异常，回测终止
2021-10-05 22:20:38.684922 Traceback (most recent call last):
File "c:\vnstudio\lib\site-packages\vnpy_ctastrategy\backtesting.py", line 228, in run_backtesting
self.callback(data)
TypeError: 'NoneType' object is not callable
请教如何处理？

策略的on_init函数下，漏掉了load_data加载历史数据调用

算盘man wrote:

Traceback (most recent call last):
File "D:\veighna_studio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 276, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "D:\veighna_studio\lib\site-packages\vnpy_ctabacktester\ui\widget.py", line 55, in init
self.backtester_engine.init_engine()
File "D:\veighna_studio\lib\site-packages\vnpy_ctabacktester\engine.py", line 71, in init_engine
self.init_datafeed()
File "D:\veighna_studio\lib\site-packages\vnpy_ctabacktester\engine.py", line 77, in init_datafeed
result: bool = self.datafeed.init()
File "D:\veighna_studio\lib\site-packages\vnpy_rqdata\rqdata_datafeed.py", line 124, in init
df: DataFrame = all_instruments()
File "D:\veighna_studio\lib\site-packages\rqdatac\decorators.py", line 150, in wrap
return func(args, **kwargs)
File "D:\veighna_studio\lib\site-packages\rqdatac\services\basic.py", line 385, in all_instruments
ins_ret = filter(cond, get_instrument_list(market))
File "D:\veighna_studio\lib\site-packages\rqdatac\decorators.py", line 129, in wrapper
value = user_function(args, kwargs)
File "D:\veighna_studio\lib\site-packages\rqdatac\services\basic.py", line 139, in _all_cached_instruments_list
return _all_instruments_list(market)
File "D:\veighna_studio\lib\site-packages\rqdatac\services\basic.py", line 116, in _all_instruments_list
ins = [Instrument(i) for i in get_client().execute("all_instruments", market=market)]
File "D:\veighna_studio\lib\site-packages\rqdatac\decorators.py", line 67, in wrap
return func(*args, kwargs)
File "D:\veighna_studio\lib\site-packages\rqdatac\connection_pool.py", line 27, in execute
return conn.execute(method, *args, **kwargs)
File "rqdatac\connection.py", line 117, in rqdatac.connection.Connection.execute
File "rqdatac\connection.py", line 87, in rqdatac.connection.Connection._read_one_packet
rqdatac.share.errors.QuotaExceeded: Quota exceeded

这是连接次数超限的报错嘛，明天是否可以恢复呢；我没有共享给其他人，没有同时登录啊；

也有可能是今天下载的数据量超过上限了