百分比移动停利和移动停损怎写?

如何知道前1〜N日日线开高低收的资讯呢
是否有函数可以实现

功能=> CTA策略

Traceback (most recent call last):
File "C:\vnstudio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 265, 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 109, in init_engine
self.load_strategy_data()
File "C:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 790, in load_strategy_data
self.strategy_data = load_json(self.data_filename)
File "C:\vnstudio\lib\site-packages\vnpy\trader\utility.py", line 92, in load_json
data = json.load(f)
File "C:\vnstudio\lib\json__init.py", line 296, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "C:\vnstudio\lib\json\init__.py", line 348, in loads
return _default_decoder.decode(s)
File "C:\vnstudio\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\vnstudio\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 39 column 22 (char 889)

Q1:怎么取得日线的高低点 策略在5分钟运行 参考 昨日高>前日高
Q2:如何取的N根K线最高点 和如何取的N根K线最低点