def check_dict(path=FACTOR_DICT_FILE_PATH):
'''
检查数据字典文件是否与当前模块中的因子字典相同，如果不同，则更新数据字典文件
'''
try:
file_dict = load_pickle(FACTOR_DICT_FILE_PATH)
except FileNotFoundError: # 如果不存在数据字典文件，则生成文件
print('Dictionary file not found, initialization...')
update_factordict()
return
module_dict = gen_path_dict(get_factor_dict())
file_dict = load_pickle(FACTOR_DICT_FILE_PATH)
if module_dict != file_dict:
print('Updating dictionary file...')
update_factordict()
def query(factor_name, time, codes=None, fillna=None):
'''
接受外部的请求，从数据库中获取对应因子的数据
Parameter
---------
factor_name: str
需要查询的因子名称
time: type that can be converted by pd.to_datetime or tuple of that
单一的参数表示查询横截面的数据，元组（start_time, end_time）表示查询时间序列数据
codes: list, default None
需要查询数据的股票代码，默认为None，表示查询所有股票的数据
fillna: int or float, default
是否给NA值进行填充，默认为None，即不需要填充，如果需要填充则将填充值传给fillna参数
Return
------
out: pd.DataFrame
查询结果数据，index为时间，columns为股票代码，如果未查询到符合要求的数据，则返回None
'''
factor_dict = load_pickle(FACTOR_DICT_FILE_PATH)
if factor_dict is None:
raise ValueError('Dictionary file needs initialization...')
assert factor_name in factor_dict, \
'Error, factor name "{pname}" is'.format(pname=factor_name) +\
' not valid, valid names are {vnames}'.format(vnames=list(factor_dict.keys()))
abs_path = factor_dict[factor_name]
db = database.DBConnector(abs_path)
data = db.query(time, codes)
if fillna is not None:
data = data.fillna(fillna)
return data
def get_universe(path=UNIVERSE_FILE_PATH):
'''
用于获取当前数据中对应的universe
Parameter
---------
path: str, default UNIVERSE_FILE_PATH
universe文件存储的位置
Return
------
out: list
当前数据对应的universe（排序后）
'''
universe = datatoolkits.load_pickle(path)[0]
return sorted(universe)
def update_universe(path=UNIVERSE_FILE_PATH):
'''
获取最新的universe，并将最新的universe与之前文件中的universe对比，如果发生了更新，打印相关信息
随后，将最新的universe存储在指定文件中，存储文件为一个tuple(universe, update_time)
Parameter
---------
path: str, default UNIVERSE_FILE_PATH
存储universe数据的文件
Return
------
universe: list
当前最新的universe
Notes
-----
不能自行调用该函数用于获取universe，可能造成获取的universe与因子数据的universe不一致，
获取当前的universe，使用fmanger.factors.utils.get_universe函数
'''
logger = logging.getLogger(__name__.split()[0])
new_universe = fdgetter.get_db_data(fdgetter.BASIC_SQLs['A_UNIVERSE'],
cols=('code', ),
add_stockcode=False)
new_universe['code'] = new_universe.code.apply(datatoolkits.add_suffix)
new_universe = new_universe.code.tolist()
try:
universe_save = datatoolkits.load_pickle(path)
universe, _ = universe_save
nu_set = set(new_universe)
ou_set = set(universe)
if nu_set != ou_set:
add_diff = list(nu_set.difference(ou_set))
minus_diff = list(ou_set.difference(nu_set))
msg = 'Warning: universe UPDATED, {drop} are DROPED, {add} are ADDED'.\
format(drop=minus_diff, add=add_diff)
logger.info(msg)
print(msg)
except FileNotFoundError:
pass
data = (new_universe, dt.datetime.now())
datatoolkits.dump_pickle(data, path)
return new_universe
def query(factor_name, time, codes=None, fillna=None):
'''
接受外部的请求，从数据库中获取对应因子的数据
Parameter
---------
factor_name: str
需要查询的因子名称
time: type that can be converted by pd.to_datetime or tuple of that
单一的参数表示查询横截面的数据，元组（start_time, end_time）表示查询时间序列数据
codes: list, default None
需要查询数据的股票代码，默认为None，表示查询所有股票的数据
fillna: int or float, default（该参数将废止）
是否给NA值进行填充，默认为None，即不需要填充，如果需要填充则将填充值传给fillna参数
Return
------
out: pd.DataFrame
查询结果数据，index为时间，columns为股票代码，如果未查询到符合要求的数据，则返回None
'''
# 若更换了机器，需要先更新因子字典
factor_dict = load_pickle(FACTOR_DICT_FILE_PATH)
if factor_dict is None:
raise ValueError('Dictionary file needs initialization...')
assert factor_name in factor_dict, \
'Error, factor name "{pname}" is'.format(pname=factor_name) +\
' not valid, valid names are {vnames}'.format(vnames=sorted(factor_dict.keys()))
abs_path = factor_dict[factor_name]
db = database.DBConnector(abs_path)
data = db.query(time, codes)
if data is None:
return None
universe = get_universe()
if codes is None: # 为了避免数据的universe不一致导致不同数据的横截面长度不同
data = data.reindex(columns=universe)
if fillna is None:
fillna = db.default_data
if isinstance(fillna, np.bytes_):
fillna = fillna.decode('utf8')
data = data.fillna(fillna)
return data
formater.get_basicformater(param)}
Notes
-----
函数会根据参数的形式推断需要使用的formater的方法，推断方法如下：
当字典值为tuple时会使用get_modformater，当字典值为str时，使用get_basicformater
'''
out = dict()
for col, format_type in format_set.items():
if isinstance(format_type, str):
out[col] = formater.get_basicformater(format_type)
else:
f, p = format_type
out[col] = formater.get_modformater(f, p)
return out
if __name__ == '__main__':
test_data = datatoolkits.load_pickle(
r"F:\GeneralLib\CONST_DATAS\htmltable.pickle")
res = table_convertor.format_df(test_data.reset_index(),
formater=trans2formater({
'nav':
'pct2p',
'CSI700': ('pctnp', 4)
}),
order=['nav', 'index', 'CSI700'])
# ret = datatoolkits.load_pickle(r"F:\GeneralLib\CONST_DATAS\sample_ret.pickle")
# sr = sortino_ratio(ret.group_05.pct_change().dropna(), 0.04)
# print(sr)
#!/usr/bin/env python # -*- coding:utf-8 """ Author: Hao Li Email: [email protected] Github: https://github.com/SAmmer0 Created: 2018/3/20 """ import pandas as pd from datatoolkits import load_pickle import dateshandle from tdtools.tradingcalendar import TradingCalendar TD_PATH = r"E:\GeneralLib\CONST_DATAS\tradingDays.pickle" td_data = load_pickle(TD_PATH) trading_times = (('09:30', '11:30'), ('13:00', '15:00')) sse_calendar = TradingCalendar(td_data, trading_times) # 交易日计数测试 start_time = '2017-01-01' end_time = '2018-03-02' mod_cnt = sse_calendar.count(start_time, end_time, 'both') old_cnt = dateshandle.tds_count(start_time, end_time) assert mod_cnt == old_cnt # 交易日区间测试 start_time = '2016-03-01' end_time = '2017-11-03' mod_tds = sse_calendar.get_tradingdays(start_time,
