def _advance(cls, date, n, units):
if units == TimeUnits.Days or units == TimeUnits.BDays:
return cls.fromExcelSerialNumber(date.__serialNumber__ + n)
elif units == TimeUnits.Weeks:
return cls.fromExcelSerialNumber(date.__serialNumber__ + 7 * n)
elif units == TimeUnits.Months:
d = date.dayOfMonth()
m = date.month() + n
y = date.year()
addedYear = int(math.floor(m / 12))
monthLeft = m % 12
if monthLeft == 0:
monthLeft = 12
addedYear -= 1
y += addedYear
pyFinAssert(
1900 < y < 2200, ValueError,
'year {0:d} is out of bound. It must be in [1901, 2199]'.
format(y))
return cls(y, monthLeft, d)
elif units == TimeUnits.Years:
d = date.dayOfMonth()
m = date.month()
y = date.year() + n
pyFinAssert(
1900 < y < 2200, ValueError,
'year {0:d} is out of bound. It must be in [1901, 2199]'.
format(y))
return cls(y, m, d)
def get_sec_price_on_date(cls,
start_date,
end_date,
sec_ids,
freq=FreqType.EOD,
field=['close'],
return_type=DfReturnType.DateIndexAndSecIDCol):
"""
:param start_date: str, start date of the query period
:param end_date: str, end date of the query period
:param sec_ids: list of str, sec IDs
:param freq: FreqType
:param field: str, filed of data to be queried
:param return_type: dfReturnType
:return: pd.DataFrame, index = date, col = sec ID
"""
if not w.isconnected():
w.start()
pyFinAssert(
freq == FreqType.EOD, ValueError,
"for the moment the function only accepts freq type = EOD")
start_date = str(start_date) if not isinstance(
start_date, basestring) else start_date
end_date = str(end_date) if not isinstance(end_date,
basestring) else end_date
raw_data = w.wsd(sec_ids, field, start_date, end_date, 'PriceAdj=F',
'Fill=Previous')
ret = format_raw_data(raw_data, sec_ids, freq, field, return_type)
return ret
def _advance(cls, date, n, units):
if units == TimeUnits.Days or units == TimeUnits.BDays:
return cls.fromExcelSerialNumber(date.__serialNumber__ + n)
elif units == TimeUnits.Weeks:
return cls.fromExcelSerialNumber(date.__serialNumber__ + 7 * n)
elif units == TimeUnits.Months:
d = date.dayOfMonth()
m = date.month() + n
y = date.year()
addedYear = int(math.floor(m / 12))
monthLeft = m % 12
if monthLeft == 0:
monthLeft = 12
addedYear -= 1
y += addedYear
pyFinAssert(1900 < y < 2200, ValueError, 'year {0:d} is out of bound. It must be in [1901, 2199]'.format(y))
return cls(y, monthLeft, d)
elif units == TimeUnits.Years:
d = date.dayOfMonth()
m = date.month()
y = date.year() + n
pyFinAssert(1900 < y < 2200, ValueError, 'year {0:d} is out of bound. It must be in [1901, 2199]'.format(y))
return cls(y, m, d)
def bachelierFormulaImpliedVol(optionType,
strike,
forward,
tte,
bachelierPrice,
discount=1.0):
strike = float(strike)
forward = float(forward)
tte = float(tte)
bachelierPrice = float(bachelierPrice)
discount = float(discount)
pyFinAssert(tte > 0, ValueError,
"tte ({0:f}) must be positive".format(tte))
SQRT_QL_EPSILON = math.sqrt(MathConstants.QL_EPSILON)
forwardPremium = bachelierPrice / discount
if optionType == OptionType.Call:
straddlePremium = 2.0 * forwardPremium - (forward - strike)
else:
straddlePremium = 2.0 * forwardPremium + (forward - strike)
nu = (forward - strike) / straddlePremium
nu = max(-1.0 + MathConstants.QL_EPSILON,
min(nu, 1.0 - MathConstants.QL_EPSILON))
eta = 1.0 if (abs(nu) < SQRT_QL_EPSILON) else (nu / math.atanh(nu))
heta = HCalculator.calculate(eta)
impliedBpvol = math.sqrt(MathConstants.M_PI /
(2 * tte)) * straddlePremium * heta
return impliedBpvol
def get_sec_price_on_date(cls, start_date, end_date, sec_ids, freq=FreqType.EOD, field=['close'],
return_type=DfReturnType.DateIndexAndSecIDCol):
"""
:param start_date: str, start date of the query period
:param end_date: str, end date of the query period
:param sec_ids: list of str, sec IDs
:param freq: FreqType
:param return_type: DfReturnType
:param field: list of str, optional, filed of data to be queried
:return: pd.DataFrame, index = date, col = sec ID
"""
pyFinAssert(freq == FreqType.EOD, ValueError, "for the moment the function only accepts freq type = EOD")
start_date = str(start_date) if not isinstance(start_date, basestring) else start_date
end_date = str(end_date) if not isinstance(end_date, basestring) else end_date
ret = pd.DataFrame()
for s in sec_ids:
raw_data = ts.get_k_data(s, start=start_date, end=end_date, ktype=freq)
if return_type == DfReturnType.DateIndexAndSecIDCol:
ret = pd.concat([ret, raw_data[field]], axis=1)
else:
raise NotImplementedError
if return_type == DfReturnType.DateIndexAndSecIDCol:
ret.columns = sec_ids
ret.index.name = 'tradeDate'
ret.sort_index(ascending=True, inplace=True)
return ret
def blackFormulaImpliedStdDev(optionType,
strike,
forward,
blackPrice,
discount=1.0,
displacement=0.0):
otherOptionPrice = blackPrice - optionType * (forward - strike) * discount
if optionType == OptionType.Put and strike > forward:
optionType = OptionType.Call
blackPrice = otherOptionPrice
if optionType == OptionType.Call and strike < forward:
optionType = OptionType.Put
blackPrice = otherOptionPrice
strike += displacement
forward += displacement
func = lambda x: blackFormula(optionType, strike, forward, x, discount, displacement) - blackPrice
stdAppr = _blackFormulaImpliedStdDevApproximation(optionType,
strike,
forward,
blackPrice,
discount,
displacement)
pyFinAssert(stdAppr >= 0.0, ValueError, "stdDev ({0:f})) must be non-negative".format(stdAppr))
return newton(func, stdAppr, tol=1e-10)
def __init__(self, window, dependency='x', isPopulation=False):
super(MovingVariance, self).__init__(window, dependency)
self._runningSum = 0.0
self._runningSumSquare = 0.0
self._isPop = isPopulation
if not self._isPop:
pyFinAssert(window >= 2, ValueError, "sampling variance can't be calculated with window size < 2")
def __init__(self, year=None, month=None, day=None, serialNumber=None):
# do the input validation
if serialNumber is not None and year is None and month is None and day is None:
self.__serialNumber__ = serialNumber
return
elif serialNumber is not None and (year is not None or month
is not None or day is not None):
raise ValueError(
"When serial number is offered, no year or month or day number should be entered"
)
elif year is None or month is None or day is None:
raise ValueError(
"year: {0}, month: {1}, day: {2} can't be null value included".
format(year, month, day))
isLeap = self.isLeap(year)
pyFinAssert(
1 <= month <= 12, ValueError,
'month {0:d} is out of bound. It must be in [1, 12]'.format(month))
length = self._monthLength(month, isLeap)
offset = self._monthOffset(month, isLeap)
pyFinAssert(
1 <= day <= length, ValueError,
'day {0:d} is out of bound. It must be in [1, {1:d}]'.format(
day, length))
self.__serialNumber__ = day + offset + _YearOffset[year - 1900]
def bachelierFormulaImpliedVol(optionType,
strike,
forward,
tte,
bachelierPrice,
discount=1.0):
strike = float(strike)
forward = float(forward)
tte = float(tte)
bachelierPrice = float(bachelierPrice)
discount = float(discount)
pyFinAssert(tte > 0, ValueError, "tte ({0:f}) must be positive".format(tte))
SQRT_QL_EPSILON = math.sqrt(MathConstants.QL_EPSILON)
forwardPremium = bachelierPrice / discount
if optionType == OptionType.Call:
straddlePremium = 2.0 * forwardPremium - (forward - strike)
else:
straddlePremium = 2.0 * forwardPremium + (forward - strike)
nu = (forward - strike) / straddlePremium
nu = max(-1.0 + MathConstants.QL_EPSILON, min(nu, 1.0 - MathConstants.QL_EPSILON))
eta = 1.0 if (abs(nu) < SQRT_QL_EPSILON) else (nu / math.atanh(nu))
heta = HCalculator.calculate(eta)
impliedBpvol = math.sqrt(MathConstants.M_PI / (2 * tte)) * straddlePremium * heta
return impliedBpvol
def blackFormulaImpliedStdDev(optionType,
strike,
forward,
blackPrice,
discount=1.0,
displacement=0.0):
otherOptionPrice = blackPrice - optionType * (forward - strike) * discount
if optionType == OptionType.Put and strike > forward:
optionType = OptionType.Call
blackPrice = otherOptionPrice
if optionType == OptionType.Call and strike < forward:
optionType = OptionType.Put
blackPrice = otherOptionPrice
strike += displacement
forward += displacement
func = lambda x: blackFormula(optionType, strike, forward, x, discount,
displacement) - blackPrice
stdAppr = _blackFormulaImpliedStdDevApproximation(optionType, strike,
forward, blackPrice,
discount, displacement)
pyFinAssert(stdAppr >= 0.0, ValueError,
"stdDev ({0:f})) must be non-negative".format(stdAppr))
return newton(func, stdAppr, tol=1e-10)
def __init__(self, window, dependency='x', isPopulation=False):
super(MovingVariance, self).__init__(window, dependency)
self._runningSum = 0.0
self._runningSumSquare = 0.0
self._isPop = isPopulation
if not self._isPop:
pyFinAssert(window >= 2, ValueError, "sampling variance can't be calculated with window size < 2")
def __init__(self, left, right):
self._returnSize = right.valueSize
self._symbolList = set(left.symbolList)
self._window = left.window + right.window - 1
self._dependency = left.dependency
if not isinstance(right.fields, str):
pyFinAssert(
left.valueSize == len(right.fields), ValueError,
"left value size {0} is "
"different from right dependency {1}".format(
left.valueSize, right.fields))
else:
pyFinAssert(
left.valueSize == 1, ValueError,
"left value size {0} is different from right dependency 1".
format(left.valueSize))
self._right = copy.deepcopy(right._holderTemplate)
self._left = copy.deepcopy(left._holderTemplate)
self._holderTemplate = CompoundedValueHolder(self._left, self._right)
self._innerHolders = {
name: copy.deepcopy(self._holderTemplate)
for name in self._symbolList
}
def nthWeekday(nth, dayOfWeek, m, y):
pyFinAssert(nth > 0, ValueError, "zeroth day of week in a given (month, year) is undefined")
pyFinAssert(nth < 6, ValueError, "no more than 5 weekday in a given (month, year)")
first = Date(y, m, 1).weekday()
skip = nth - (1 if dayOfWeek >= first else 0)
return Date(y, m, (1 + dayOfWeek + skip * 7) - first)
def __init__(self, dates, values):
pyFinAssert(
len(dates) == len(values), ValueError,
"dates and values should have same length")
self._values = OrderedDict()
for date, value in zip(dates, values):
self._values[date] = value
def __init__(self, valueHolder, N=1):
super(Shift, self).__init__(N, valueHolder._dependency)
pyFinAssert(N >= 1, ValueError, "shift value should always not be less than 1")
self._valueHolder = deepcopy(valueHolder)
self._window = valueHolder.window + N
self._containerSize = N
self._returnSize = valueHolder.valueSize
self._dependency = deepcopy(valueHolder.dependency)
def __init__(self, valueHolder, N=1):
super(Shift, self).__init__(N, valueHolder._dependency)
pyFinAssert(N >= 1, ValueError, "shift value should always not be less than 1")
self._valueHolder = deepcopy(valueHolder)
self._window = valueHolder.window + N
self._containerSize = N
self._returnSize = valueHolder.valueSize
self._dependency = deepcopy(valueHolder.dependency)
def SecurityShiftedValueHolder(secValueHolder, n):
pyFinAssert(n >= 1, ValueError, "shift value should always not be less than 1")
res = copy.deepcopy(secValueHolder)
res._window = secValueHolder.window + n
res._innerHolders = {
name: Shift(secValueHolder.holders[name], n) for name in secValueHolder.holders
}
return res
def ptf_re_balance(return_dict, margin_prop=0.0, re_balance_freq=FreqType.EOM):
"""
:param return_dict: dict, returnName: [returnData, ReturnType]
:param margin_prop: float, optional, proportion of the init ptf that is allocated to futures account
:param re_balance_freq: str, optional, rebalance frequncy = daily/monthly/yearly
:return: pd.Series, daily cumul returns of hedged ptf
"""
strat_return = return_dict['stratReturn'][0]
strat_return_type = return_dict['stratReturn'][1]
benchmark_return = return_dict['benchmarkReturn'][0]
benchmark_return_type = return_dict['benchmarkReturn'][1]
strat_return = empyrical.cum_returns(strat_return,
starting_value=1.0) if strat_return_type == ReturnType.NonCumul \
else strat_return
benchmark_return = empyrical.cum_returns(benchmark_return,
starting_value=1.0) if benchmark_return_type == ReturnType.NonCumul \
else benchmark_return
pyFinAssert(0 <= margin_prop <= 1.0, ValueError,
" margin prop must be between 0 and 1")
hedged_ptf_return = pd.Series()
# merge strat and index returns together
return_data = pd.concat([strat_return, benchmark_return],
axis=1,
join_axes=[strat_return.index])
return_data.columns = ['strategy', 'benchmark']
return_data.index = pd.to_datetime(return_data.index)
pyFinAssert(return_data.isnull().values.any() == False, ValueError,
" returnData has NaN values")
regroup_total_return = regroup_by_re_balance_freq(return_data,
re_balance_freq)
# first date is a balance date
re_balance_base_nav = 1.0
norm_base_return = return_data.iloc[0]
for name, group in regroup_total_return:
# compute the hedged return
norm_strat_return = group['strategy'] / norm_base_return['strategy']
norm_benchmark_return = group['benchmark'] / norm_base_return[
'benchmark']
hedged_return = (1 + (norm_strat_return - norm_benchmark_return) *
(1 - margin_prop)) * re_balance_base_nav
# update the re_balance base NPV
re_balance_base_nav = hedged_return.iloc[-1]
# update norm base return
norm_base_return = group.iloc[-1]
# merge into ptfValue
hedged_ptf_return = pd.concat([hedged_ptf_return, hedged_return],
axis=0)
hedged_ptf_return.name = 'hedgedPtfReturn'
hedged_ptf_return.index.name = return_data.index.name
return hedged_ptf_return
def __init__(self, left, right):
pyFinAssert(left.valueSize == right.valueSize, ValueError, "left value size {0} should be equal "
"to right value size"
.format(left.valueSize, right.valueSize))
self._returnSize = left.valueSize
self._left = deepcopy(left)
self._right = deepcopy(right)
self._dependency = list(set(left.dependency).union(set(right.dependency)))
self._window = max(self._left.window, self._right.window)
self._containerSize = max(self._left._containerSize, self._right._containerSize)
def bizDatesList(self, fromDate, toDate):
pyFinAssert(fromDate <= toDate, ValueError, "from date ({0} must be earlier than to date {1}"
.format(fromDate, toDate))
result = []
d = fromDate
while d <= toDate:
if self.isBizDay(d):
result.append(d)
d += 1
return result
def nthWeekday(nth, dayOfWeek, m, y):
pyFinAssert(
nth > 0, ValueError,
"zeroth day of week in a given (month, year) is undefined")
pyFinAssert(nth < 6, ValueError,
"no more than 5 weekday in a given (month, year)")
first = Date(y, m, 1).weekday()
skip = nth - (1 if dayOfWeek >= first else 0)
return Date(y, m, (1 + dayOfWeek + skip * 7) - first)
def __init__(self, left, right):
pyFinAssert(left.valueSize == right.valueSize, ValueError, "left value size {0} should be equal "
"to right value size"
.format(left.valueSize, right.valueSize))
self._returnSize = left.valueSize
self._left = deepcopy(left)
self._right = deepcopy(right)
self._dependency = list(set(left.dependency).union(set(right.dependency)))
self._window = max(self._left.window, self._right.window)
self._containerSize = max(self._left._containerSize, self._right._containerSize)
def __init__(self, window, dependency):
super(StatefulValueHolder, self).__init__(dependency)
if not isinstance(window, int):
raise ValueError("window parameter should be a positive int however {0} received"
.format(window))
pyFinAssert(window > 0, ValueError, "window length should be greater than 0")
self._returnSize = 1
self._window = window
self._containerSize = window
self._con = deque()
def holDatesList(self, fromDate, toDate, includeWeekEnds=True):
pyFinAssert(fromDate <= toDate, ValueError, "from date ({0} must be earlier than to date {1}"
.format(fromDate, toDate))
result = []
d = fromDate
while d <= toDate:
if self.isHoliday(d) and (includeWeekEnds or not self.isWeekEnd(d.weekday())):
result.append(d)
d += 1
return result
def __init__(self, window, dependency):
super(StatefulValueHolder, self).__init__(dependency)
if not isinstance(window, int):
raise ValueError("window parameter should be a positive int however {0} received"
.format(window))
pyFinAssert(window > 0, ValueError, "window length should be greater than 0")
self._returnSize = 1
self._window = window
self._containerSize = window
self._con = deque()
self._isFull = 0
def bizDatesList(self, fromDate, toDate):
pyFinAssert(
fromDate <= toDate, ValueError,
"from date ({0} must be earlier than to date {1}".format(
fromDate, toDate))
result = []
d = fromDate
while d <= toDate:
if self.isBizDay(d):
result.append(d)
d += 1
return result
def blackFormulaImpliedVol(optionType,
strike,
forward,
tte,
blackPrice,
riskFree=0.0,
displacement=0.0):
pyFinAssert(tte > 0.0, ValueError,
"time to maturity ({0:f})) must be positive".format(tte))
discount = math.exp(-riskFree * tte)
stdDev = blackFormulaImpliedStdDev(optionType, strike, forward, blackPrice,
discount, displacement)
return stdDev / math.sqrt(tte)
def holDatesList(self, fromDate, toDate, includeWeekEnds=True):
pyFinAssert(
fromDate <= toDate, ValueError,
"from date ({0} must be earlier than to date {1}".format(
fromDate, toDate))
result = []
d = fromDate
while d <= toDate:
if self.isHoliday(d) and (includeWeekEnds
or not self.isWeekEnd(d.weekday())):
result.append(d)
d += 1
return result
def __getitem__(self, item):
if isinstance(item, tuple):
symbolList = set(i.lower() for i in item)
pyFinAssert(len(symbolList) == len(item), ValueError, "security name can't be duplicated")
res = SecuritiesValues(
{s: self._innerHolders[s].value for s in symbolList}
)
return res
elif isinstance(item, str) and item.lower() in self._innerHolders:
item = item.lower()
return self._innerHolders[item].value
else:
raise TypeError("{0} is not a valid index".format(item))
def top(df, column=None, n=5):
"""
:param df: pd.DataFrame/Series
:param column: str, col name to be sorted
:param n: int, optional, top n element to be returned
:return: pd.Series, larget n element in col
"""
if isinstance(df, pd.Series):
ret = df.sort_values(ascending=False)[:n]
else:
pyFinAssert(column is not None, "Specify the col name or use pandas Series type of data")
ret = df.sort_values(by=column, ascending=False)[:n]
return ret
def __getitem__(self, item):
if isinstance(item, tuple):
symbolList = set(i.lower() for i in item)
pyFinAssert(
len(symbolList) == len(item), ValueError,
"security name can't be duplicated")
res = SecuritiesValues(
{s: self._innerHolders[s].value
for s in symbolList})
return res
elif isinstance(item, str) and item.lower() in self._innerHolders:
item = item.lower()
return self._innerHolders[item].value
else:
raise TypeError("{0} is not a valid index".format(item))
def _binary_operator(self, right, op):
if isinstance(right, SecuritiesValues):
pyFinAssert(
self._values.keys() == right._values.keys(), ValueError,
"left security names {0} "
"is not equal to right {1}".format(self._values.keys(),
right._values.keys()))
return SecuritiesValues({
name: op(self._values[name], right._values[name])
for name in self._values
})
else:
return SecuritiesValues(
{name: op(self._values[name], right)
for name in self._values})
def eig_val_pct(eig_values, pct):
"""
:param eig_values: np.array/list, 所有特征值组成的向量
:param pct: 阈值
:return: 给定百分比阈值,返回需要降低到多少维度
"""
pyFinAssert(0.0 <= pct <= 1.0, ValueError,
"pct ({0:f}) must be between 0.0 and 1.0".format(pct))
sort_eig_values = np.sort(eig_values)
sort_eig_values = sort_eig_values[-1::-1] # 特征值从大到小排列
eig_values_sum = sum(sort_eig_values)
cum_sum = sort_eig_values.cumsum()
marginal_eig_val = next(x for x in cum_sum if x / eig_values_sum >= pct)
index = np.where(cum_sum == marginal_eig_val)[0][0]
return index + 1
def __init__(self, left, right):
self._returnSize = right.valueSize
self._left = deepcopy(left)
self._right = deepcopy(right)
self._window = self._left.window + self._right.window - 1
self._containerSize = self._right._containerSize
self._dependency = deepcopy(left.dependency)
if hasattr(right.dependency, '__iter__'):
pyFinAssert(left.valueSize == len(right.dependency), ValueError, "left value size {0} "
"should be equal to right dependency size {1}"
.format(left.valueSize, len(right.dependency)))
else:
pyFinAssert(left.valueSize == 1, ValueError, "left value size {0} should be equal to right dependency size 1"
.format(left.valueSize))
def __init__(self, left, right):
self._returnSize = right.valueSize
self._left = deepcopy(left)
self._right = deepcopy(right)
self._window = self._left.window + self._right.window - 1
self._containerSize = self._right._containerSize
self._dependency = deepcopy(left.dependency)
if hasattr(right.dependency, '__iter__'):
pyFinAssert(left.valueSize == len(right.dependency), ValueError, "left value size {0} "
"should be equal to right dependency size {1}"
.format(left.valueSize, len(right.dependency)))
else:
pyFinAssert(left.valueSize == 1, ValueError, "left value size {0} should be equal to right dependency size 1"
.format(left.valueSize))
def __add__(self, p2):
res = Period(self.length, self.units)
if self.length == 0:
return Period(p2.length, p2.units)
elif self.units == p2.units:
res._length += p2.length
return res
else:
if self.units == TimeUnits.Years:
if p2.units == TimeUnits.Months:
res._units = TimeUnits.Months
res._length = res.length * 12 + p2.length
elif p2.units == TimeUnits.Weeks or p2.units == TimeUnits.Days or p2.units == TimeUnits.BDays:
pyFinAssert(p2.length == 0, ValueError, "impossible addition between {0} and {1}".format(self, p2))
else:
raise ValueError("unknown time unit ({0:d})".format(p2.units))
return res
elif self.units == TimeUnits.Months:
if p2.units == TimeUnits.Years:
res._length += 12 * p2.length
elif p2.units == TimeUnits.Weeks or p2.units == TimeUnits.Days or p2.units == TimeUnits.BDays:
pyFinAssert(p2.length == 0, ValueError, "impossible addition between {0} and {1}".format(self, p2))
else:
raise ValueError("unknown time unit ({0:d})".format(p2.units))
return res
elif self.units == TimeUnits.Weeks:
if p2.units == TimeUnits.Days:
res._units = TimeUnits.Days
res._length = res.length * 7 + p2.length
elif p2.units == TimeUnits.Years or p2.units == TimeUnits.Months or p2.units == TimeUnits.BDays:
pyFinAssert(p2.length == 0, ValueError, "impossible addition between {0} and {1}".format(self, p2))
else:
raise ValueError("unknown time unit ({0:d})".format(p2.units))
return res
elif self.units == TimeUnits.Days:
if p2.units == TimeUnits.Weeks:
res._length += 7 * p2.length
elif p2.units == TimeUnits.Years or p2.units == TimeUnits.Months or p2.units == TimeUnits.BDays:
pyFinAssert(p2.length == 0, ValueError, "impossible addition between {0} and {1}".format(self, p2))
else:
raise ValueError("unknown time unit ({0:d})".format(p2.units))
return res
elif self.units == TimeUnits.BDays:
if p2.units == TimeUnits.Years or p2.units == TimeUnits.Months or p2.units == TimeUnits.Weeks or p2.units == TimeUnits.Days:
pyFinAssert(p2.length == 0, ValueError, "impossible addition between {0} and {1}".format(self, p2))
else:
raise ValueError("unknown time unit ({0:d})".format(p2.units))
def __init__(self, value, n=1):
if isinstance(value, Accumulator):
pyFinAssert(value.valueSize == 1, ValueError, "Identity can't applied "
"to value holder with value size {0} bigger than 1"
.format(value.valueSize))
self._dependency = value._dependency
self._isValueHolder = True
self._window = value.window
self._containerSize = value._containerSize
else:
self._dependency = []
self._isValueHolder = False
self._window = 1
self._containerSize = 1
self._value = value
self._returnSize = n
def _binary_operator(self, right, op):
if isinstance(right, SecuritiesValues):
pyFinAssert(self._values.keys() == right._values.keys(), ValueError, "left security names {0} "
"is not equal to right {1}"
.format(self._values.keys(), right._values.keys()))
return SecuritiesValues(
{
name: op(self._values[name], right._values[name]) for name in self._values
}
)
else:
return SecuritiesValues(
{
name: op(self._values[name], right) for name in self._values
}
)
def __getitem__(self, item):
try:
return self.holders[item].result()
except (TypeError, KeyError) as _:
if isinstance(item, tuple):
symbolList = set(i.lower() for i in item)
pyFinAssert(len(symbolList) == len(item), ValueError, "security name can't be duplicated")
res = SecuritiesValues(
{s: self.holders[s].result() for s in symbolList}
)
return res
elif isinstance(item, SecurityValueHolder):
return FilteredSecurityValueHolder(self, item)
else:
raise TypeError("{0} is not a valid index".format(item))
def blackFormulaImpliedVol(optionType,
strike,
forward,
tte,
blackPrice,
riskFree=0.0,
displacement=0.0):
pyFinAssert(tte > 0.0, ValueError, "time to maturity ({0:f})) must be positive".format(tte))
discount = math.exp(-riskFree * tte)
stdDev = blackFormulaImpliedStdDev(optionType,
strike,
forward,
blackPrice,
discount,
displacement)
return stdDev / math.sqrt(tte)
def __init__(self, value, n=1):
if isinstance(value, Accumulator):
pyFinAssert(value.valueSize == 1, ValueError, "Identity can't applied "
"to value holder with value size {0} bigger than 1"
.format(value.valueSize))
self._dependency = value._dependency
self._isValueHolder = True
self._window = value.window
self._containerSize = value._containerSize
else:
self._dependency = []
self._isValueHolder = False
self._window = 1
self._containerSize = 1
self._value = value
self._returnSize = n
def blackFormula2(optionType,
strike,
forward,
tte,
vol,
riskFree=0.0,
displacement=0.0):
pyFinAssert(tte >= 0.0, ValueError,
"time to maturity ({0:f})) must be non negative".format(tte))
if tte == 0.0:
return max((forward - strike) * optionType, 0.0)
discount = math.exp(-riskFree * tte)
stdDev = math.sqrt(tte) * vol
return blackFormula(optionType, strike, forward, stdDev, discount,
displacement)
def push(self, data):
values = super(MovingCorrelationMatrix, self).push(data)
if values is None:
return
if self._isFirst:
self._runningSum = np.zeros((1, len(values)))
self._runningSumCrossSquare = np.zeros((len(values), len(values)))
self._isFirst = False
reshapeValues = np.array(values).reshape((1, len(values)))
popout = self._dumpOneValue(reshapeValues)
if not np.any(np.isnan(popout)):
pyFinAssert(len(values) == self._runningSum.size, ValueError, "size incompatiable")
self._runningSum += reshapeValues - popout
self._runningSumCrossSquare += reshapeValues * reshapeValues.T - popout * popout.T
else:
pyFinAssert(len(values) == self._runningSum.size, ValueError, "size incompatiable")
self._runningSum += reshapeValues
self._runningSumCrossSquare += reshapeValues * reshapeValues.T
def push(self, data):
values = super(MovingCorrelationMatrix, self).push(data)
if values is None:
return
if self._isFirst:
self._runningSum = np.zeros((1, len(values)))
self._runningSumCrossSquare = np.zeros((len(values), len(values)))
self._isFirst = False
reshapeValues = np.array(values).reshape((1, len(values)))
popout = self._dumpOneValue(reshapeValues)
if not np.any(np.isnan(popout)):
pyFinAssert(len(values) == self._runningSum.size, ValueError, "size incompatiable")
self._runningSum += reshapeValues - popout
self._runningSumCrossSquare += reshapeValues * reshapeValues.T - popout * popout.T
else:
pyFinAssert(len(values) == self._runningSum.size, ValueError, "size incompatiable")
self._runningSum += reshapeValues
self._runningSumCrossSquare += reshapeValues * reshapeValues.T
def __init__(self, left, right):
self._returnSize = right.valueSize
self._symbolList = left.symbolList
self._window = left.window + right.window - 1
self._dependency = left.dependency
if not isinstance(right.fields, str):
pyFinAssert(left.valueSize == len(right.fields), ValueError, "left value size {0} is "
"different from right dependency {1}"
.format(left.valueSize, right.fields))
else:
pyFinAssert(left.valueSize == 1, ValueError, "left value size {0} is different from right dependency 1"
.format(left.valueSize))
self._right = copy.deepcopy(right.holders[list(right.holders)[0]])
self._left = copy.deepcopy(left.holders[list(left.holders)[0]])
self._innerHolders = {
name: CompoundedValueHolder(self._left, self._right) for name in self._symbolList
}
def __getitem__(self, item):
try:
if self._filter[item]:
return self.holders[item].result()
else:
return np.nan
except KeyError:
if isinstance(item, tuple):
symbolList = set(i.lower() for i in item).intersection(set(filter_flags.index)) # to be corrected
pyFinAssert(len(symbolList) == len(item), ValueError, "security name can't be duplicated")
res = SecuritiesValues(
{s: self.holders[s].result() for s in symbolList}
)
return res
elif isinstance(item, SecurityValueHolder):
return FilteredSecurityValueHolder(self, item)
else:
raise TypeError("{0} is not a valid index".format(item))
def blackFormula2(optionType,
strike,
forward,
tte,
vol,
riskFree=0.0,
displacement=0.0):
pyFinAssert(tte >= 0.0, ValueError, "time to maturity ({0:f})) must be non negative".format(tte))
if tte == 0.0:
return max((forward - strike) * optionType, 0.0)
discount = math.exp(-riskFree * tte)
stdDev = math.sqrt(tte) * vol
return blackFormula(optionType,
strike,
forward,
stdDev,
discount,
displacement)
def format_raw_data(raw_data, sec_ids, freq, fields, return_type):
ret = pd.DataFrame()
if len(raw_data.Data) > 0:
if return_type == DfReturnType.DateIndexAndSecIDCol:
pyFinAssert(
len(fields) == 1, ValueError,
"length of query fields must be 1 under DateIndexAndSecIDCol return type"
)
output = {'tradeDate': raw_data.Times}
for secID in sec_ids:
output[secID] = raw_data.Data[sec_ids.index(secID)]
ret = pd.DataFrame(output)
ret['tradeDate'] = ret['tradeDate'].apply(
lambda x: x.strftime('%Y-%m-%d'))
ret['tradeDate'] = pd.to_datetime(ret['tradeDate'])
ret = ret.set_index('tradeDate')
else:
raise NotImplementedError
return ret
def __init__(self, year=None, month=None, day=None, serialNumber=None):
# do the input validation
if serialNumber is not None and year is None and month is None and day is None:
self.__serialNumber__ = serialNumber
return
elif serialNumber is not None and (year is not None or month is not None or day is not None):
raise ValueError("When serial number is offered, no year or month or day number should be entered")
elif year is None or month is None or day is None:
raise ValueError("year: {0}, month: {1}, day: {2} can't be null value included".format(year, month, day))
isLeap = self.isLeap(year)
pyFinAssert(1 <= month <= 12, ValueError, 'month {0:d} is out of bound. It must be in [1, 12]'.format(month))
length = self._monthLength(month, isLeap)
offset = self._monthOffset(month, isLeap)
pyFinAssert(1 <= day <= length, ValueError, 'day {0:d} is out of bound. It must be in [1, {1:d}]'
.format(day, length))
self.__serialNumber__ = day + offset + _YearOffset[year - 1900]
def load_factor_data(self,
start_date,
end_date,
sec_ids,
field=['close'],
freq=FreqType.EOD,
return_type=DfReturnType.DateIndexAndSecIDCol,
table_name='sec_close'):
"""
:param start_date: str, start date of the query period
:param end_date: str, end date of the query period
:param sec_ids: list of str, sec IDs
:param freq: enum, optional, FreqType
:param return_type: enum, optional, DfReturnType
:param field: str, optional, filed of data to be queried
:param table_name: str, optional, table name in sql database to be queried
:return: pd.DataFrame, index = date, col = sec ID
"""
pyFinAssert(
freq == FreqType.EOD, ValueError,
"for the moment the function only accepts freq type = EOD")
str_field = ','.join([element for element in field])
sql = 'select tradeDate, secID, {field} from {table} where tradeDate >= \'{start_date}\' and ' \
'tradeDate <= \'{end_date}\' '.format(field=str_field,
table=table_name,
start_date=start_date,
end_date=end_date)
if not isinstance(sec_ids, basestring):
sec_ids = [str(sec_id) for sec_id in sec_ids]
if len(sec_ids) > 1:
sql += 'and secID in {tp_sec_ids}'.format(
tp_sec_ids=tuple(sec_ids))
else:
sql += 'and secID in (\'{tp_sec_ids}\')'.format(
tp_sec_ids=sec_ids[0])
raw_data = pd.read_sql(sql, self._engine)
ret = format_raw_data(raw_data, freq, field, return_type=return_type)
return ret
def bachelierFormula(optionType,
strike,
forward,
stdDev,
discount=1.0):
strike = float(strike)
forward = float(forward)
stdDev = float(stdDev)
discount = float(discount)
pyFinAssert(stdDev >= 0, ValueError, "stdDev ({0:f}) must be non-negative".format(stdDev))
pyFinAssert(discount > 0, ValueError, "discount ({0:f}) must be positive".format(discount))
d = (forward - strike) * optionType
if stdDev == 0:
return discount * max(d, 0.0)
h = d / stdDev
result = discount * (stdDev * _dist.derivative(h) + d * _dist(h))
pyFinAssert(result >= 0, ValueError, "negative value ({0:f}) for "
"stdDev: {1:f}"
"option: {2}"
"strike: {3:f}"
"forward: {4:f}".format(result, stdDev, optionType, strike, forward))
return result
def __div__(self, n):
pyFinAssert(n != 0, ValueError, "cannot be divided by zero")
res = Period(self.length, self.units)
if self.length % n == 0:
res._length /= n
else:
units = res.units
length = res.length
if units == TimeUnits.Years:
length *= 12
units = TimeUnits.Months
elif units == TimeUnits.Weeks:
length *= 7
units = TimeUnits.Days
pyFinAssert(length % n == 0, ValueError, "{0} cannot be divided by {1:d}".format(res, n))
res._length = length / n
res._units = units
return res
def _checkParameters(strike, forward, displacement):
strike = float(strike)
forward = float(forward)
displacement = float(displacement)
pyFinAssert(displacement >= 0, ValueError, "displacement ({0:f}) must be non-negative".format(displacement))
pyFinAssert(strike + displacement >= 0, ValueError, "strike + displacement ({0:f}) must be non-negative"
.format(strike + displacement))
pyFinAssert(forward + displacement >= 0, ValueError, "forward + displacement ({0:f}) must be non-negative"
.format(forward + displacement))
return strike, forward, displacement
def __init__(self, dependency):
if isinstance(dependency, Accumulator):
self._isValueHolderContained = True
else:
self._isValueHolderContained = False
if hasattr(dependency, '__iter__') and len(dependency) >= 2:
for name in dependency:
pyFinAssert(isinstance(name, str), ValueError, '{0} in pNames should be a plain string. But it is {1}'
.format(name,type(name)))
self._dependency = dependency
elif hasattr(dependency, '__iter__') and len(dependency) == 1:
for name in dependency:
pyFinAssert(isinstance(name, str), ValueError, '{0} in pNames should be a plain string. But it is {1}'
.format(name,type(name)))
self._dependency = dependency[0]
elif hasattr(dependency, '__iter__'):
raise ValueError("parameters' name list should not be empty")
else:
pyFinAssert(isinstance(dependency, str) or isinstance(dependency, Accumulator), ValueError,
'{0} in pNames should be a plain string or an value holder. But it is {1}'
.format(dependency, type(dependency)))
self._dependency = deepcopy(dependency)
def parseISO(cls, dateStr):
pyFinAssert(len(dateStr) == 10 and dateStr[4] == '-' and dateStr[7] == '-', ValueError,
"invalid format {0}".format(dateStr))
return cls(int(dateStr[0:4]), int(dateStr[5:7]), int(dateStr[8:10]))
def isLeap(year):
pyFinAssert(1900 < year < 2200, ValueError, 'year {0:d} is out of bound. It must be in [1901, 2199]'.format(year))
return _YearIsLeap[year - 1900]
def defaultSymbolList(self, value):
pyFinAssert(len(value) != 0, ValueError, "default symbol list can't be set to empty")
self._defaultSymbolList = [v.lower() for v in value]
