def _calculate(start_date, end_date, credit, interest, payments={}):
start_date = get_date(start_date)
end_date = get_date(end_date)
credit = Decimal(credit)
payments = {get_date(date): Decimal(payment) for date, payment in payments.items()}
schedule = []
prev_date = start_date
cur_month_pay = month_pay = None
for date, month_interest in _iter_month_interest(start_date, end_date, interest):
if month_pay is None or cur_month_pay != month_pay:
month_pay = _get_month_pay(prev_date, end_date, credit, interest)
cur_month_pay = payments.pop(date, month_pay)
if cur_month_pay < month_pay:
raise InvalidPaymentError("Invalid payment for {}.", format_date(date))
interest_pay = _round_payment(credit * month_interest)
credit_pay = cur_month_pay - interest_pay
credit -= credit_pay
schedule.append(Payment(date, credit_pay, interest_pay, cur_month_pay, credit))
prev_date = date
if payments:
raise InvalidPaymentDateError("Invalid payment date: {}.", format_date(payments.popitem()[0]))
if credit:
payment = schedule[-1]
schedule[-1] = Payment(payment.date, payment.credit_pay + credit, interest_pay, payment.month_pay + credit, 0)
return schedule
def print_payment_schedule(credits):
for credit in credits:
table = Table([
Column("date", "Date", align=Column.ALIGN_CENTER ),
Column("credit_pay", "Credit pay", ),
Column("interest_pay", "Interest pay" ),
Column("total", "Total" ),
Column("credit", "Credit" ),
])
total_payments = 0
for payment in credit.schedule:
table.add_row({
"date": format_date(payment.date),
"credit_pay": payment.credit_pay,
"interest_pay": payment.interest_pay,
"total": payment.month_pay,
"credit": payment.credit,
})
total_payments += payment.month_pay
table.add_row({})
table.add_row({ "total": total_payments })
table.draw("\n\nPayment schedule for {} credit from {}:".format(
credit.amount, format_date(credit.start_date)))
def _calculate(start_date, end_date, credit, interest, payments={}):
start_date = get_date(start_date)
end_date = get_date(end_date)
credit = Decimal(credit)
payments = {
get_date(date): Decimal(payment)
for date, payment in payments.items()
}
schedule = []
prev_date = start_date
cur_month_pay = month_pay = None
for date, month_interest in _iter_month_interest(start_date, end_date,
interest):
if month_pay is None or cur_month_pay != month_pay:
month_pay = _get_month_pay(prev_date, end_date, credit, interest)
cur_month_pay = payments.pop(date, month_pay)
if cur_month_pay < month_pay:
raise InvalidPaymentError("Invalid payment for {}.",
format_date(date))
interest_pay = _round_payment(credit * month_interest)
credit_pay = cur_month_pay - interest_pay
credit -= credit_pay
schedule.append(
Payment(date, credit_pay, interest_pay, cur_month_pay, credit))
prev_date = date
if payments:
raise InvalidPaymentDateError("Invalid payment date: {}.",
format_date(payments.popitem()[0]))
if credit:
payment = schedule[-1]
schedule[-1] = Payment(payment.date, payment.credit_pay + credit,
interest_pay, payment.month_pay + credit, 0)
return schedule
def test_format_date():
assert format_date(Date(2013, 3, 2)) == "02.03.2013"
def print_credits(credits, print_all, with_schedule):
if not credits:
print("No credits specified.")
return
today = datetime.date.today()
credits = sorted((
calculator.get_credit_info(today, **credit)
for credit in credits
if print_all or credit["end_date"] >= today),
key=lambda credit: credit.end_date)
if not credits:
print("There are no active credits.")
return
table = Table([
Column("start_date", "Open date", align=Column.ALIGN_CENTER ),
Column("end_date", "Close date", align=Column.ALIGN_CENTER ),
Column("amount", "Amount" ),
Column("interest", "Interest" ),
Column("current_amount", "Current amount", ),
Column("month_pay", "Month pay", hide_if_empty=True),
Column("closed", "Closed", align=Column.ALIGN_CENTER, hide_if_empty=True),
])
total_amount = 0
total_month_pay = 0
for credit in credits:
closed = credit.end_date < today
if not closed:
total_amount += credit.current_amount
if credit.month_pay is not None:
total_month_pay += credit.month_pay
table.add_row({
"start_date": format_date(credit.start_date),
"end_date": format_date(credit.end_date),
"amount": credit.amount,
"interest": credit.interest,
"current_amount": credit.current_amount,
"month_pay": "" if credit.month_pay is None else credit.month_pay,
"closed": "✓" if closed else "",
})
if len(table.rows) > 1:
total_row = {}
if total_amount:
total_row["current_amount"] = total_amount
if total_month_pay:
total_row["month_pay"] = total_month_pay
if total_row:
table.add_rows([{}, total_row])
table.draw()
if with_schedule:
print_payment_schedule(credits)
def test_format_date():
assert format_date(Date(2013, 3, 2)) == "02.03.2013"
