vscode这边报错是invalid syntax，如下：
& C:/veighna_studio/python.exe c:/Users/abc/strategies/demo_strategy.py
File "<stdin>", line 1
& C:/veighna_studio/python.exe c:/Users/abc/strategies/demo_strategy.py
^
SyntaxError: invalid syntax
没启动vnstation回测功能时候没有这样报错
