S C:\Users\Administrator.vntrader> C:\veighna_elite_simulation\python update_data.py
xtquant文档地址：http://dict.thinktrader.net/nativeApi/start_now.html
xtquant历史合约信息下载完成
xtquant文档地址：http://dict.thinktrader.net/nativeApi/start_now.html
合约信息更新成功 5622
Traceback (most recent call last):
File "C:\Users\Administrator.vntrader\update_data.py", line 184, in <module>
update_bar_data()
File "C:\Users\Administrator.vntrader\update_data.py", line 122, in update_bar_data
data: list[BarOverview] = database.get_bar_overview()
File "C:\veighna_elite_simulation\lib\site-packages\elite_database\elite_database.py", line 271, in get_bar_overview
File "C:\veighna_elite_simulation\lib\shelve.py", line 243, in open
return DbfilenameShelf(filename, flag, protocol, writeback)
File "C:\veighna_elite_simulation\lib\shelve.py", line 227, in init
Shelf.init(self, dbm.open(filename, flag), protocol, writeback)
File "C:\veighna_elite_simulation\lib\dbm__init.py", line 95, in open
return mod.open(file, flag, mode)
File "C:\veighna_elite_simulation\lib\dbm\dumb.py", line 316, in open
return _Database(file, mode, flag=flag)
File "C:\veighna_elite_simulation\lib\dbm\dumb.py", line 71, in init__
self._update(flag)
File "C:\veighna_elite_simulation\lib\dbm\dumb.py", line 105, in _update
key, pos_and_siz_pair = _ast.literal_eval(line)
File "C:\veighna_elite_simulation\lib\ast.py", line 64, in literal_eval
node_or_string = parse(node_or_string.lstrip(" \t"), mode='eval')
File "C:\veighna_elite_simulation\lib\ast.py", line 50, in parse
return compile(source, filename, mode, flags,
ValueError: source code string cannot contain null bytes
