开始跟着视频操作,在做CTA回测是遇到困难,请问怎么解决?
提示如下:---------------------------------------------
16:36:01 初始化CTA回测引擎
16:36:01 策略文件strategies.demo_strategy加载失败,触发异常:
Traceback (most recent call last):
File "c:\vnstudio\lib\site-packages\vnpy\app\cta_backtester\engine.py", line 110, in load_strategy_class_from_module
module = importlib.import_module(module_name)
File "c:\vnstudio\lib\importlib__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 724, in exec_module
File "<frozen importlib._bootstrap_external>", line 860, in get_code
File "<frozen importlib._bootstrap_external>", line 791, in source_to_code
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\Users\linxizhiri\strategies\demo_strategy.py", line 45
)
^
SyntaxError: invalid syntax
16:36:01 策略文件加载完成