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from typing import Generic, List, Optional, TypeVar
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from Bi.Bi import CBi
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from BuySellPoint.BSPointConfig import CPointConfig
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from Common.ChanException import CChanException, ErrCode
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from Common.func_util import has_overlap
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from KLine.KLine_Unit import CKLine_Unit
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from Seg.Seg import CSeg
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LINE_TYPE = TypeVar('LINE_TYPE', CBi, "CSeg")
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class CZS(Generic[LINE_TYPE]):
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def __init__(self, lst: Optional[List[LINE_TYPE]], is_sure=True):
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# begin/end:永远指向 klu
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# low/high: 中枢的范围
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# peak_low/peak_high: 中枢所涉及到的笔的最大值,最小值
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self.__is_sure = is_sure
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self.__sub_zs_lst: List[CZS] = []
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if lst is None:
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return
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self.__begin: CKLine_Unit = lst[0].get_begin_klu()
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self.__begin_bi: LINE_TYPE = lst[0] # 中枢内部的笔
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# self.__low = None
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# self.__high = None
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# self.__mid = None
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self.update_zs_range(lst)
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# self.__end: CKLine_Unit = None
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# self.__end_bi: CBi = None # 中枢内部的笔
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self.__peak_high = float("-inf")
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self.__peak_low = float("inf")
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for item in lst:
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self.update_zs_end(item)
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self.__bi_in: Optional[LINE_TYPE] = None # 进中枢那一笔
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self.__bi_out: Optional[LINE_TYPE] = None # 出中枢那一笔
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self.__bi_lst: List[LINE_TYPE] = [] # begin_bi~end_bi之间的笔,在update_zs_in_seg函数中更新
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def clean_cache(self):
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self._memoize_cache = {}
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@property
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def is_sure(self): return self.__is_sure
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@property
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def sub_zs_lst(self): return self.__sub_zs_lst
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@property
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def begin(self): return self.__begin
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@property
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def begin_bi(self): return self.__begin_bi
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@property
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def low(self): return self.__low
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@property
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def high(self): return self.__high
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@property
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def mid(self): return self.__mid
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@property
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def end(self): return self.__end
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@property
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def end_bi(self): return self.__end_bi
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@property
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def peak_high(self): return self.__peak_high
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@property
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def peak_low(self): return self.__peak_low
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@property
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def bi_in(self): return self.__bi_in
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@property
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def bi_out(self): return self.__bi_out
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@property
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def bi_lst(self): return self.__bi_lst
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def update_zs_range(self, lst):
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self.__low: float = max(bi._low() for bi in lst)
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self.__high: float = min(bi._high() for bi in lst)
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self.__mid: float = (self.__low + self.__high) / 2 # 中枢的中点
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self.clean_cache()
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def is_one_bi_zs(self):
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assert self.end_bi is not None
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return self.begin_bi.idx == self.end_bi.idx
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def update_zs_end(self, item):
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self.__end: CKLine_Unit = item.get_end_klu()
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self.__end_bi: CBi = item
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if item._low() < self.peak_low:
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self.__peak_low = item._low()
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if item._high() > self.peak_high:
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self.__peak_high = item._high()
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self.clean_cache()
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def __str__(self):
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_str = f"{self.begin_bi.idx}->{self.end_bi.idx}"
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if _str2 := ",".join([str(sub_zs) for sub_zs in self.sub_zs_lst]):
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return f"{_str}({_str2})"
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else:
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return _str
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def combine(self, zs2: 'CZS', combine_mode) -> bool:
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if zs2.is_one_bi_zs():
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return False
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if self.begin_bi.seg_idx != zs2.begin_bi.seg_idx:
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return False
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if combine_mode == 'zs':
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if not has_overlap(self.low, self.high, zs2.low, zs2.high, equal=True):
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return False
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self.do_combine(zs2)
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return True
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elif combine_mode == 'peak':
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if has_overlap(self.peak_low, self.peak_high, zs2.peak_low, zs2.peak_high):
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self.do_combine(zs2)
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return True
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else:
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return False
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else:
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raise CChanException(f"{combine_mode} is unsupport zs conbine mode", ErrCode.PARA_ERROR)
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def do_combine(self, zs2: 'CZS'):
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if len(self.sub_zs_lst) == 0:
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self.__sub_zs_lst.append(self.make_copy())
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self.__sub_zs_lst.append(zs2)
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self.__low = min([self.low, zs2.low])
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self.__high = max([self.high, zs2.high])
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self.__peak_low = min([self.peak_low, zs2.peak_low])
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self.__peak_high = max([self.peak_high, zs2.peak_high])
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self.__end = zs2.end
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self.__bi_out = zs2.bi_out
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self.__end_bi = zs2.end_bi
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self.clean_cache()
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def try_add_to_end(self, item):
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if not self.in_range(item):
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return False
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if self.is_one_bi_zs():
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self.update_zs_range([self.begin_bi, item])
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self.update_zs_end(item)
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return True
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def in_range(self, item):
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return has_overlap(self.low, self.high, item._low(), item._high())
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def is_inside(self, seg: CSeg):
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return seg.start_bi.idx <= self.begin_bi.idx <= seg.end_bi.idx
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def is_divergence(self, config: CPointConfig, out_bi=None):
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if not self.end_bi_break(out_bi): # 最后一笔必须突破中枢
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return False, None
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in_metric = self.get_bi_in().cal_macd_metric(config.macd_algo, is_reverse=False)
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if out_bi is None:
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out_metric = self.get_bi_out().cal_macd_metric(config.macd_algo, is_reverse=True)
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else:
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out_metric = out_bi.cal_macd_metric(config.macd_algo, is_reverse=True)
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if config.divergence_rate > 100: # 保送
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return True, out_metric/in_metric
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else:
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return out_metric <= config.divergence_rate*in_metric, out_metric/in_metric
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def init_from_zs(self, zs: 'CZS'):
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self.__begin = zs.begin
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self.__end = zs.end
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self.__low = zs.low
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self.__high = zs.high
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self.__peak_high = zs.peak_high
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self.__peak_low = zs.peak_low
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self.__begin_bi = zs.begin_bi
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self.__end_bi = zs.end_bi
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self.__bi_in = zs.bi_in
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self.__bi_out = zs.bi_out
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def make_copy(self) -> 'CZS':
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copy = CZS(lst=None, is_sure=self.is_sure)
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copy.init_from_zs(zs=self)
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return copy
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def end_bi_break(self, end_bi=None) -> bool:
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if end_bi is None:
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end_bi = self.get_bi_out()
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assert end_bi is not None
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return (end_bi.is_down() and end_bi._low() < self.low) or \
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(end_bi.is_up() and end_bi._high() > self.high)
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def out_bi_is_peak(self, end_bi_idx: int):
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# 返回 (是否最低点,bi_out与中枢里面尾部最接近它的差距比例)
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assert len(self.bi_lst) > 0
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if self.bi_out is None:
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return False, None
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peak_rate = float("inf")
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for bi in self.bi_lst:
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if bi.idx > end_bi_idx:
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break
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if (self.bi_out.is_down() and bi._low() < self.bi_out._low()) or (self.bi_out.is_up() and bi._high() > self.bi_out._high()):
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return False, None
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r = abs(bi.get_end_val()-self.bi_out.get_end_val())/self.bi_out.get_end_val()
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if r < peak_rate:
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peak_rate = r
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return True, peak_rate
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def get_bi_in(self) -> LINE_TYPE:
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assert self.bi_in is not None
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return self.bi_in
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def get_bi_out(self) -> LINE_TYPE:
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assert self.__bi_out is not None
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return self.__bi_out
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def set_bi_in(self, bi):
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self.__bi_in = bi
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self.clean_cache()
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def set_bi_out(self, bi):
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self.__bi_out = bi
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self.clean_cache()
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def set_bi_lst(self, bi_lst):
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self.__bi_lst = bi_lst
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self.clean_cache()
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