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April 16, 2012 07:24
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台灣電費計算
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# -*- coding: utf-8 -*- | |
# Calculate basic electric usage cost in Taiwan | |
# | |
# From: http://www.taipower.com.tw/TaipowerWeb/upload/files/11/main_3_6_3.pdf | |
# Update (4/13/2012): 最新電價表 http://www.moea.gov.tw/Mns/populace/news/wHandNews_File.ashx?news_id=25156&serial_no=2 | |
# | |
# ===> 以下為舊電價表 | |
#四、表燈用電 | |
# (一)非時間電價 | |
#分 類 | |
#非營業用 | |
#夏 月 | |
#(6月1日至9月30日) | |
#110 度以下部分 每 度 2.10 元 | |
#111~330 度部分 每 度 3.02 | |
#331~500 度部分 每 度 4.05 | |
#501~700 度部分 每 度 4.51 | |
#701 度以上部分 每 度 5.10 | |
#非 夏 月 | |
#(夏月以外時間) | |
#110 度以下部分 每 度 2.10 元 | |
#111~330 度部分 每 度 2.68 | |
#331~500 度部分 每 度 3.27 | |
#501~700 度部分 每 度 3.55 | |
#701 度以上部分 每 度 3.97 | |
#註: | |
#1.公私立各級學校用電按非營業用電第一段單價計收(公私立國中小學電價按附表三電價計收)。 | |
#2.公用路燈按附表二電價計收。 | |
#3. 用戶因實施隔月抄表、收費,其計費之分段度數概加倍計算。 | |
# | |
# ===> 新電價表 (5/15/2012實施) | |
# | |
#四、表燈用電 | |
# (一)非時間電價 | |
#分 類 | |
#非營業用 | |
#夏 月 | |
#(6月1日至9月30日) | |
#120 度以下部分 每 度 2.10 元 | |
#121~330 度部分 每 度 3.47 | |
#331~500 度部分 每 度 4.89 | |
#501~700 度部分 每 度 5.67 | |
#701 度以上部分 每 度 6.43 | |
#非 夏 月 | |
#(夏月以外時間) | |
#120 度以下部分 每 度 2.10 元 | |
#121~330 度部分 每 度 3.13 | |
#331~500 度部分 每 度 4.11 | |
#501~700 度部分 每 度 4.71 | |
#701 度以上部分 每 度 5.30 | |
import nose | |
def elec_calc(watts, is_summer=False, is_new=False): | |
table_summer = [ | |
(121, 2.10), | |
(331, 3.47), | |
(501, 4.89), | |
(701, 5.67), | |
(-1, 6.43) | |
] | |
table_not_summer = [ | |
(121, 2.10), | |
(331, 3.13), | |
(501, 4.11), | |
(701, 4.71), | |
(-1, 5.30) | |
] | |
table_summer_old = [ | |
(111, 2.1), | |
(331, 3.02), | |
(501, 4.05), | |
(701, 4.51), | |
(-1, 5.1) | |
] | |
table_not_summer_old = [ | |
(111, 2.1), | |
(331, 2.68), | |
(501, 3.27), | |
(701, 3.55), | |
(-1, 3.97) | |
] | |
table = table_not_summer | |
if is_summer: | |
table = table_summer | |
cost = 0 | |
last_meter = 0 | |
for meter, rate in table: | |
if watts > meter and meter != -1: | |
cost += (meter - last_meter) * rate | |
else: | |
cost += (watts - last_meter) * rate | |
break | |
last_meter = meter | |
return cost | |
def main(): | |
print elec_calc(1802.44, is_summer=True) | |
def test_elec_calc(): | |
# Test is_summer=True | |
test_pair = [ | |
(1, 2.10), | |
(5, 10.5), | |
(110.5, 232.05), | |
(115, 245.18), | |
(331, 897.5), | |
(339, 929.9), | |
(501, 1586), | |
(550, 1806.99), | |
(700, 2483.49), | |
(701, 2488), | |
(790, 2941.9), | |
] | |
for watts, desired in test_pair: | |
check_elec_calc(watts, desired, is_summer=True) | |
# Test is_summer=True | |
test_pair2 = [ | |
(1, 2.1), | |
(5, 10.5), | |
(110.5, 232.05), | |
(115, 243.82), | |
(331, 822.7), | |
(339, 848.86), | |
(501, 1378.6), | |
(550, 1552.55), | |
(700, 2085.05), | |
(701, 2088.6), | |
(790, 2441.93) | |
] | |
for watts, desired in test_pair2: | |
check_elec_calc(watts, desired) | |
def check_elec_calc(watts, desired, is_summer=False): | |
nose.tools.assert_almost_equal(elec_calc(watts, is_summer), desired) | |
if __name__ == "__main__": | |
main() |
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