本文整理汇总了Python中numpy.pv函数的典型用法代码示例。如果您正苦于以下问题：Python pv函数的具体用法？Python pv怎么用？Python pv使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了pv函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。
示例1: calcPrice
def calcPrice(self):
if self.par != None and self.cr != None and self.cy != None:
self.pr = (self.par*self.cr)/self.cy
elif self.par != None and self.cr != None and self.ytm != None:
self.pr = -1*np.pv(0.5*self.ytm, 2.0*self.mat, 0.5*self.par*self.cr, self.par)
print "Bond price = $%.2f" % self.pr
开发者ID:bradfordlynch，项目名称:rossMiscCodes，代码行数:7，代码来源:FIN503_Tools.py
示例2: calculate_bond_price
def calculate_bond_price(self):
present_value = np.pv(
rate=self.annual_required_return / self.annual_payment_frequency,
nper=self.term_to_maturity * self.annual_payment_frequency,
pmt=self.semi_annual_coupon_payment,
fv=self.face_value
)
return -0.1 * present_value
开发者ID:bsmukasa，项目名称:bond_analytics，代码行数:9，代码来源:models.py
示例3: _calc
def _calc(self):
# shortcut if the portfolio is 0...some of the math
# below doesn't like 0s.
if self.portfolio.value == 0:
return Decimal(0)
amount = pmt(self.rate, self.final_age - self.current_age, self.portfolio.value)
desired_pmt = self.desired_payment * self.cumulative_inflation
desired_value = pv(float(self.rate), self.final_age - self.current_age, float(-desired_pmt), when='begin')
desired_value = Decimal(desired_value)
tilt = (self.portfolio.value / desired_value) ** self.tilt
return amount * tilt
开发者ID:hoostus，项目名称:prime-harvesting，代码行数:11，代码来源:inverted.py
示例4: getFitForN
def getFitForN(N):
a = []
for i in range(1, N + 1):
row = []
for j in range(N - 1, -1, -1):
row.append(pow(i, j))
a.append(row)
a = na(a)
b = na([sequence(i) for i in range(1, N + 1)])
coeffs = solve(a, b)
fit = pv(coeffs, N + 1)
return fit
开发者ID:shomchak，项目名称:ProjectEuler，代码行数:12，代码来源:e101.py
示例5: levelize_costs
def levelize_costs(self):
if hasattr(self, 'is_levelized'):
inflation = float(cfg.cfgfile.get('case', 'inflation_rate'))
rate = self.cost_of_capital - inflation
if self.is_levelized == 0:
self.values_level = - np.pmt(rate, self.book_life, 1, 0, 'end') * self.values
util.convert_age(self, vintages=self.vintages, years=self.years, attr_from='values_level', attr_to='values_level', reverse=False)
else:
self.values_level = self.values.copy()
util.convert_age(self, vintages=self.vintages, years=self.years, attr_from='values_level', attr_to='values_level', reverse=False)
self.values = np.pv(rate, self.book_life, -1, 0, 'end') * self.values
else:
raise ValueError('Supply Technology id %s needs to indicate whether costs are levelized ' %self.id)
开发者ID:anamileva，项目名称:energyPATHWAYS，代码行数:13，代码来源:supply_technologies.py
示例6: levelize_costs
def levelize_costs(self):
if hasattr(self, 'is_levelized'):
inflation = float(cfg.cfgfile.get('case', 'inflation_rate'))
rate = self.cost_of_capital - inflation
if self.is_levelized == 0:
self.values_level = - np.pmt(rate, self.book_life, 1, 0, 'end') * self.values
util.convert_age(self, vintages=self.vintages, years=self.years, attr_from='values_level', attr_to='values_level', reverse=False)
else:
self.values_level = self.values.copy()
util.convert_age(self, vintages=self.vintages, years=self.years, attr_from='values_level', attr_to='values_level', reverse=False)
self.values = np.pv(rate, self.book_life, -1, 0, 'end') * self.values
else:
util.convert_age(self, vintages=self.vintages, years=self.years, reverse=False)
开发者ID:tuberculo，项目名称:energyPATHWAYS，代码行数:13，代码来源:supply_technologies.py
示例7: calc_compounding
def calc_compounding ( _rate, _periods, _principal, _contribution, _delta, _inflation ) :
in_rate = 0.01 * _rate
in_delta = 0.01 * _delta
in_contrib = -1* _contribution
in_princ = -1* _principal
in_inflation = 0.01* inflation
print("rate %g, periods %g, principal %g, contribution %g, delta %g, inflation %g" %( _rate, _periods, in_princ, in_contrib, _delta, _inflation))
cf1 = np.array([round(np.fv(in_rate, i, in_contrib, in_princ, when='end'),2) for i in range(1,periods+1)])
cf2 = np.array([round(np.fv((in_rate-in_delta), i, in_contrib, in_princ, when='end'),2) for i in range(1,periods+1)])
if _inflation == 0:
return(np.subtract(cf1,cf2))
else:
diff = np.subtract(cf1,cf2)
return np.array([round(np.pv(in_inflation, i, 0, (-1*diff[i])),2) for i in range(_periods)])
开发者ID:bansalr，项目名称:fund_allocation，代码行数:14，代码来源:rate_of_return.py
示例8: harvest
def harvest(self):
amount = yield
while True:
# In order to get rid of the memory effect, the parameters to PV
# have to independent of *when* you retire. But they can use current information
# This is just our life expectancy.
nper = max(5, 100 - self.current_age)
#nper = mortality.life_expectancy(self.current_age, None)
# But let's also subtract out however many years worth of bonds
# we currently have. This assumes that bonds keep up with inflation
# which is a dubious proposition...
#nper -= int(self.portfolio.bonds / amount)
# Set a minimum years worth of stock. Pretty arbitrarily chosen...
portfolio_goal = Decimal(-numpy.pv(float(self.rate), nper, float(amount), when='beginning'))
if self.portfolio.stocks >= portfolio_goal:
#import pdb;pdb.set_trace()
#harvest_amount = self.portfolio.stocks - portfolio_goal
harvest_amount = self.portfolio.stocks / 4
self.portfolio.sell_stocks(harvest_amount)
self.portfolio.buy_bonds(harvest_amount)
#print(self.current_age, " ", harvest_amount.to_integral_value(), " ", self.portfolio.stocks.to_integral_value(), "{%d}" % amount)
else:
#print(self.current_age, "[", portfolio_goal.to_integral_value(), "]", self.portfolio.stocks.to_integral_value(), "{%d}" % amount)
pass
amount = min(amount, self.portfolio.value)
amount_bonds = min(amount, self.portfolio.bonds)
amount_stocks = amount - amount_bonds
self.portfolio.sell_bonds(amount_bonds)
self.portfolio.sell_stocks(amount_stocks)
amount = yield self.portfolio.empty_cash()
self.current_age += 1
开发者ID:hoostus，项目名称:prime-harvesting，代码行数:39，代码来源:actuarial.py
示例9: test_when
def test_when(self):
# begin
assert_almost_equal(np.rate(10, 20, -3500, 10000, 1), np.rate(10, 20, -3500, 10000, "begin"), 4)
# end
assert_almost_equal(np.rate(10, 20, -3500, 10000), np.rate(10, 20, -3500, 10000, "end"), 4)
assert_almost_equal(np.rate(10, 20, -3500, 10000, 0), np.rate(10, 20, -3500, 10000, "end"), 4)
# begin
assert_almost_equal(np.pv(0.07, 20, 12000, 0, 1), np.pv(0.07, 20, 12000, 0, "begin"), 2)
# end
assert_almost_equal(np.pv(0.07, 20, 12000, 0), np.pv(0.07, 20, 12000, 0, "end"), 2)
assert_almost_equal(np.pv(0.07, 20, 12000, 0, 0), np.pv(0.07, 20, 12000, 0, "end"), 2)
# begin
assert_almost_equal(np.fv(0.075, 20, -2000, 0, 1), np.fv(0.075, 20, -2000, 0, "begin"), 4)
# end
assert_almost_equal(np.fv(0.075, 20, -2000, 0), np.fv(0.075, 20, -2000, 0, "end"), 4)
assert_almost_equal(np.fv(0.075, 20, -2000, 0, 0), np.fv(0.075, 20, -2000, 0, "end"), 4)
# begin
assert_almost_equal(np.pmt(0.08 / 12, 5 * 12, 15000.0, 0, 1), np.pmt(0.08 / 12, 5 * 12, 15000.0, 0, "begin"), 4)
# end
assert_almost_equal(np.pmt(0.08 / 12, 5 * 12, 15000.0, 0), np.pmt(0.08 / 12, 5 * 12, 15000.0, 0, "end"), 4)
assert_almost_equal(np.pmt(0.08 / 12, 5 * 12, 15000.0, 0, 0), np.pmt(0.08 / 12, 5 * 12, 15000.0, 0, "end"), 4)
# begin
assert_almost_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0, 1), np.ppmt(0.1 / 12, 1, 60, 55000, 0, "begin"), 4)
# end
assert_almost_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0), np.ppmt(0.1 / 12, 1, 60, 55000, 0, "end"), 4)
assert_almost_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0, 0), np.ppmt(0.1 / 12, 1, 60, 55000, 0, "end"), 4)
# begin
assert_almost_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0, 1), np.ipmt(0.1 / 12, 1, 24, 2000, 0, "begin"), 4)
# end
assert_almost_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0), np.ipmt(0.1 / 12, 1, 24, 2000, 0, "end"), 4)
assert_almost_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0, 0), np.ipmt(0.1 / 12, 1, 24, 2000, 0, "end"), 4)
# begin
assert_almost_equal(np.nper(0.075, -2000, 0, 100000.0, 1), np.nper(0.075, -2000, 0, 100000.0, "begin"), 4)
# end
assert_almost_equal(np.nper(0.075, -2000, 0, 100000.0), np.nper(0.075, -2000, 0, 100000.0, "end"), 4)
assert_almost_equal(np.nper(0.075, -2000, 0, 100000.0, 0), np.nper(0.075, -2000, 0, 100000.0, "end"), 4)
开发者ID:Xatpy，项目名称:echomesh，代码行数:42，代码来源:test_financial.py
示例10: do_proforma
#.........这里部分代码省略.........
out=component_sales_revenue)
else:
sales_revenue = 0
if sales_revenue < 0: sales_revenue = 0
# before reaching full occupancy for rent property
if not sold_for_rent and any(component_rent_revenue <= c['rent_revenue']):
rent_revenue = np.min(column_stack((c['rent_revenue'],
component_rent_revenue)),
axis=1
)
operating_cost = (rent_revenue * c['operating_cost']).sum()
vacancy = (rent_revenue * c['vacancy_rates']).sum()
rent_revenue = rent_revenue.sum()
component_rent_revenue += c['rent_revenue_per_period']
np.clip(component_rent_revenue,
0, c['rent_revenue'],
out=component_rent_revenue)
if not sold_for_rent and any(component_leases_revenue <= c['leases_revenue']):
leases_revenue = np.min(column_stack((c['leases_revenue'],
component_leases_revenue)),
axis=1
)
operating_cost += (leases_revenue * c['operating_cost']).sum()
vacancy += (leases_revenue * c['vacancy_rates']).sum()
leases_revenue = leases_revenue.sum()
component_leases_revenue += c['leases_revenue_per_period']
np.clip(component_leases_revenue,
0, c['leases_revenue'],
out=component_leases_revenue)
#revenues
if not sold_for_rent:
revenues[period] += sales_revenue + rent_revenue + leases_revenue
else:
revenues[period] = sales_revenue
if revenues[period] == 0:
break
#costs
taxable_proportion = p['rent_sqft'] / p['total_sqft'].astype(float32)
tax = p['property_tax'] * (p['land_cost'] + p['construction_cost']) * taxable_proportion
insurance = p['rent_sqft'] * property_insurance
construction_equity = 0
construction_loan_interest_payment = construction_loan_balance * construction_loan_rate
construction_loan_repayment = revenues[period] \
if construction_loan_balance > revenues[period] \
else construction_loan_balance
#adjustment to revenues/costs
for_rent_noi = rent_revenue + leases_revenue - tax - insurance - operating_cost - vacancy
meets_perm_load_occupancy_threshold = rent_revenue + leases_revenue > \
( p['rent_revenue'] + p['leases_revenue']) * \
perm_load_occupancy_threshold
if perm_loan_size == 0 and \
for_rent_noi > 0 and \
meets_perm_load_occupancy_threshold:
perm_loan_size = min((for_rent_noi / cap_rate) * ltv_max,
-np.pv(perm_loan_rate,
perm_loan_term,
for_rent_noi / dcr_max)
)
perm_loan_proceeds = perm_loan_size
revenues[period] += perm_loan_proceeds
if perm_loan_size > 0:
perm_loan_interest_payment = -np.pmt(perm_loan_rate, perm_loan_term, perm_loan_size)
if not sold_for_rent:
costs[period] += tax + insurance + operating_cost + vacancy + \
construction_loan_interest_payment + construction_loan_repayment + \
perm_loan_interest_payment
else:
costs[period] = 0
construction_loan_balance -= construction_loan_repayment
if DEBUG: print period, sales_revenue, full_rent_periods, for_rent_seasoning_threshold
if full_rent_periods > for_rent_seasoning_threshold+1 and \
sales_revenue <= 0 and \
not sold_for_rent:
#sell_for_rent = 1
perm_loan_repayment = perm_loan_size
for_rent_sale = for_rent_noi / cap_rate
revenues[period] += for_rent_sale
costs[period] += perm_loan_repayment
sold_for_rent = 1
#break
if DEBUG: print "REVENUES:", revenues
costs = costs * (1.0-p['costdiscount'])
if DEBUG: print "COSTS:", costs
cash_flow = (revenues - costs)[1:period]
npv = np.npv(discount_rate, cash_flow)
if DEBUG: print "CASHFLOW:", cash_flow
if DEBUG: print "NPV:", npv
irr = np.irr(cash_flow)
return asarray(npv)
开发者ID:psrc，项目名称:urbansim，代码行数:101，代码来源:proforma.py
示例11: calculate_previous_balance
def calculate_previous_balance(loan):
return np.pv((loan.rate/100)/loan.period, loan.period, -loan.payment, -loan.present_balance)
开发者ID:jimboston，项目名称:LoanCalculator，代码行数:2，代码来源:loancalculator.py
示例12: get_required_portfolio
def get_required_portfolio(self):
amount = self.current_rate * self.portfolio.value
pv = numpy.pv(float(self.get_rate()), self.get_life_expectancy(), float(-amount), when='beginning')
return Decimal(pv)
开发者ID:hoostus，项目名称:prime-harvesting，代码行数:4，代码来源:stout.py
示例13:
# 时间点的价值。
# pv函数计算现值（present value），即金融资产当前的价值。
# npv函数返回的是净现值（net present value），即按折现率计算的净现金流之和。
# pmt函数根据本金和利率计算每期需支付的金额。
# irr函数计算内部收益率（internal rate of return）。内部收益率是是净现值为0时的有效利
# 率，不考虑通胀因素。
# mirr函数计算修正后内部收益率（modified internal rate of return），是内部收益率的改进
# 版本。
# nper函数计算定期付款的期数。
# rate函数计算利率（rate of interest）。
print u"终值"
#fv函数参数为利率，参数，每期支付金额，现值
print "Future value",np.fv(0.03/4, 5*4,-10,1000)
print u"现值"
#pv函数参数为利率，参数，每期支付金额，终值
print "Present value",np.pv(0.03/4,5*4,-10,1376.09633204)
#npv参数为利率和一个表示现金流的数组.
cashflows = np.random.randint(100,size=5)
cashflows = np.insert(cashflows,0,-100)
print "Cashflows",cashflows
print "Net present value",np.npv(0.03,cashflows)
print u"内部收益率"
print "Internal rate of return",np.irr([-100, 38, 48,90 ,17,36])
print u"分期付款"
#pmt输入为利率和期数,总价，输出每期钱数
print "Payment",np.pmt(0.10/12,12*30,100000)
#nper参数为贷款利率，固定的月供和贷款额，输出付款期数
print "Number of payments", np.nper(0.10/12,-100,9000)
#rate参数为付款期数，每期付款资金，现值和终值计算利率
print "Interest rate",12*np.rate(167,-100,9000,0)
开发者ID:moonlmq，项目名称:Tools，代码行数:31，代码来源:Learn_TypicalFunction.py
示例14: print
Näide 2
Kui suur peab olema investeeringu hetkeväärtus, et 10 aasta päras oleks
kogunenud 14485.09€, kui aastane intressimäär on 3.5% ning me lisame
investeeringule iga kuu 100€? Kui suur peab olema alginvesteering, et selline
summa koguneks 5, 6, 7, 8 või 9 aastaga?
------------------------------------------------------------------------------
"""
print("\nNäide 2\n-------\n")
RATE = 0.035 / 12 # 3.5% aastas, 3.5%/12 perioodis
PERIOD = 10*12 # 10 aastat
PAYMENT = -100 # maksame 100€ kuus, '-' tähendab raha väljavoolu
FV = 14485.09 # soovitud tulemus
PRESENT_VALUE = np.pv(RATE, PERIOD, PAYMENT, FV, when='end')
print("Et toota {0}€, peaks investeeringu hetkeväärtus olema {1:.2f}€."
.format(FV, -PRESENT_VALUE) # '-' tähistab väljaminekut
)
PERIODS = np.array([5, 6, 7, 8, 9])
PRESENT_VALUES = np.pv(RATE, PERIODS*12, PAYMENT, FV, when='end')
for period, pv in zip(PERIODS, PRESENT_VALUES):
print("{0} aasta korral peaks investeeringu hetkeväärtus olema {1:.2f}€."
.format(period, -pv) # '-' tähistab väljaminekut
)
"""
------------------------------------------------------------------------------
nper (net present value) -- perioodiliste maksete arvu arvutamine
nper(rate, pmt, pv, fv=0, when='end')
开发者ID:priitlatt，项目名称:sissejuhatus-finantsmatemaatikasse，代码行数:31，代码来源:sfm_yl1_intresside_rehkendamine_priit_latt.py
示例15: test_pv
def test_pv(self):
assert_almost_equal(np.pv(.10,12,-100,100), 649.51, 2)
开发者ID:radovankavicky，项目名称:econpy，代码行数:2，代码来源:test_finance.py
示例16: myfnc
def myfnc(x):
return np.pv(x,2,0,125.44)+100.0
开发者ID:cbasurto，项目名称:Intro-to-Python-Coursework，代码行数:2，代码来源:financial.institution.goal.seek.py
示例17:
import numpy as np
np.pv(0.05 / 12, 10 * 12, -100, 15692.93)
a = np.array((0.05, 0.04, 0.03)) / 12
np.pv(a, 10 * 12, -100, 15692.93)
开发者ID:yzozulya，项目名称:numpy_test_examples，代码行数:5，代码来源:numpy.pv.py
示例18: test_pv_decimal
def test_pv_decimal(self):
assert_equal(np.pv(Decimal('0.07'), Decimal('20'), Decimal('12000'), Decimal('0')),
Decimal('-127128.1709461939327295222005'))
开发者ID:Horta，项目名称:numpy，代码行数:3，代码来源:test_financial.py
示例19: test_when
def test_when(self):
# begin
assert_equal(np.rate(10, 20, -3500, 10000, 1),
np.rate(10, 20, -3500, 10000, 'begin'))
# end
assert_equal(np.rate(10, 20, -3500, 10000),
np.rate(10, 20, -3500, 10000, 'end'))
assert_equal(np.rate(10, 20, -3500, 10000, 0),
np.rate(10, 20, -3500, 10000, 'end'))
# begin
assert_equal(np.pv(0.07, 20, 12000, 0, 1),
np.pv(0.07, 20, 12000, 0, 'begin'))
# end
assert_equal(np.pv(0.07, 20, 12000, 0),
np.pv(0.07, 20, 12000, 0, 'end'))
assert_equal(np.pv(0.07, 20, 12000, 0, 0),
np.pv(0.07, 20, 12000, 0, 'end'))
# begin
assert_equal(np.fv(0.075, 20, -2000, 0, 1),
np.fv(0.075, 20, -2000, 0, 'begin'))
# end
assert_equal(np.fv(0.075, 20, -2000, 0),
np.fv(0.075, 20, -2000, 0, 'end'))
assert_equal(np.fv(0.075, 20, -2000, 0, 0),
np.fv(0.075, 20, -2000, 0, 'end'))
# begin
assert_equal(np.pmt(0.08 / 12, 5 * 12, 15000., 0, 1),
np.pmt(0.08 / 12, 5 * 12, 15000., 0, 'begin'))
# end
assert_equal(np.pmt(0.08 / 12, 5 * 12, 15000., 0),
np.pmt(0.08 / 12, 5 * 12, 15000., 0, 'end'))
assert_equal(np.pmt(0.08 / 12, 5 * 12, 15000., 0, 0),
np.pmt(0.08 / 12, 5 * 12, 15000., 0, 'end'))
# begin
assert_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0, 1),
np.ppmt(0.1 / 12, 1, 60, 55000, 0, 'begin'))
# end
assert_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0),
np.ppmt(0.1 / 12, 1, 60, 55000, 0, 'end'))
assert_equal(np.ppmt(0.1 / 12, 1, 60, 55000, 0, 0),
np.ppmt(0.1 / 12, 1, 60, 55000, 0, 'end'))
# begin
assert_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0, 1),
np.ipmt(0.1 / 12, 1, 24, 2000, 0, 'begin'))
# end
assert_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0),
np.ipmt(0.1 / 12, 1, 24, 2000, 0, 'end'))
assert_equal(np.ipmt(0.1 / 12, 1, 24, 2000, 0, 0),
np.ipmt(0.1 / 12, 1, 24, 2000, 0, 'end'))
# begin
assert_equal(np.nper(0.075, -2000, 0, 100000., 1),
np.nper(0.075, -2000, 0, 100000., 'begin'))
# end
assert_equal(np.nper(0.075, -2000, 0, 100000.),
np.nper(0.075, -2000, 0, 100000., 'end'))
assert_equal(np.nper(0.075, -2000, 0, 100000., 0),
np.nper(0.075, -2000, 0, 100000., 'end'))
开发者ID:Horta，项目名称:numpy，代码行数:63，代码来源:test_financial.py
示例20: taux
capital=np.zeros((3, 7))
interets=np.zeros((3, 7))
# Hypothèse de mensualité fixe
mensualite=50.0
# Hypothèses de taux (source: meilleurstaux.com au 30/06/2014)
mention=('Bon', 'Très bon', 'Excellent')
duree=np.array(([7, 10, 12, 15, 20, 25, 30]))
taux=np.array(([0.0223, 0.0245, 0.0263, 0.0281, 0.0300, 0.0337, 0.0425],
[0.0205, 0.0225, 0.0243, 0.0258, 0.0274, 0.0320, 0.0370],
[0.0175, 0.0196, 0.0216, 0.0240, 0.0267, 0.0283, 0.0335]))
taux_df=pd.DataFrame(taux, index=mention, columns=duree)
for i in range(len(mention)):
for j in range(len(taux[0])):
capital[i,j]=np.pv(taux[i,j]/12, duree[j]*12, -mensualite)
interets[i,j]=mensualite*12*duree[j]-capital[i,j]
# Affichage des résultats
for i in range(len(mention)):
plt.figure('Taux '+ mention[i])
plt.title('Taux '+ mention[i])
plt.grid(color="k")
plt.xlabel('Durée')
plt.xlim(5, 31)
plt.ylabel('Montant (EUR)')
plt.plot(duree, capital[i], 'b', label='Montant financable')
plt.plot(duree, interets[i], 'r', label='Interets versés')
plt.show()
开发者ID:milinc，项目名称:ptre，代码行数:31，代码来源:maturite.py
注：本文中的numpy.pv函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
客服电话
APP下载
官方微信
请发表评论