python - 在Python中使用string.strip()提取特定列

Question

import requests
from bs4 import BeautifulSoup
f = open('path to create /Price.csv','w')
errorFile = open('path to create /errorPrice.txt','w')
year = 2012; month = 1; day =1
if year<= 2016:
    if day > 32:
        month += 1
        day = 1
    if month >12:
        year += 1
        month = 1
    url = 'http://nepalstock.com.np/main/todays_price/index/1/stock-name/desc/YTozOntzOjk6InN0YXJ0RGF0ZSI7czoxMDoiMjAxNi0wNi0wOSI7czoxMjoic3RvY2stc3ltYm9sIjtzOjA6IiI7czo2OiJfbGltaXQiO3M6MjoiNTAiO30?startDate='+str(year)+'-'+str(month)+'-'+str(day)+'&stock-symbol=&_limit=500'
    res = requests.get(url)

    soup = BeautifulSoup(res.text, 'lxml')

    for child in soup.findAll('table'):
            for row in child.findAll('tr')[2:]:
                for col in row.findAll('td'):

                    try:
                        SN = col[3].string.strip()
                        f.write(SN+'\n')

                    except Exception as e:
                        errorFile.write (str(day) + '*************'+ str(e)+'***********************'+ str(col)+'\n')
                        pass
        #day += 1
f.close
errorFile.close   

“我想提取 col[3]，但它不起作用，并且在错误文件中没有显示任何我可以追溯的内容，尽管我是一个十足的菜鸟，并且可能在这一点上犯了错误。”

Answer 1

您只需要对返回的列表进行索引SN = row.findAll('td')[3]，也没有必要删除换行符然后将其放回去，这将获取所有表数据:

 r = requests.get("http://nepalstock.com.np/main/todays_price/index/1/stock-name/desc/YTozOntzOjk6InN0YXJ0RGF0ZSI7czoxMDoiMjAxNi0wNi0wOSI7czoxMjoic3RvY2stc3ltYm9sIjtzOjA6IiI7czo2OiJfbGltaXQiO3M6MjoiNTAiO30?startDate=2016-01-04&stock-symbol=&_limit=500")

soup = BeautifulSoup(r.content)

table = soup.select_one("table.table-condensed.table-hover")
cols_tr = table.select_one("tr.unique")
print([td.text.strip() for td in cols_tr.find_all("td")])

for row in cols_tr.find_all_next("tr"):
    print([td.text.strip() for td in row.find_all("td")])

将输出:

[u'S.N.', u'Traded Companies', u'No. Of Transaction', u'Max Price', u'Min Price', u'Closing Price', u'Traded Shares', u'Amount', u'Previous Closing', u'Difference Rs.']
[u'1', u'Yeti  Development Bank Limited', u'7', u'143.00', u'140.00', u'140.00', u'1777.00', u'252897.00', u'143.00', u'-3.00']
[u'2', u'Western Development Bank Limited', u'1', u'315.00', u'315.00', u'315.00', u'500.00', u'157500.00', u'319.00', u'-4.00']
[u'3', u'Vijaya laghubitta Bittiya Sanstha Ltd.', u'162', u'1235.00', u'1172.00', u'1195.00', u'3188.00', u'3853176.00', u'1225.00', u'-30.00']
[u'4', u'United Insurance Co. (Nepal) Ltd.', u'111', u'550.00', u'500.00', u'540.00', u'50433.00', u'26399127.00', u'510.00', u'30.00']
[u'5', u'Unique Finance Ltd.', u'6', u'147.00', u'145.00', u'147.00', u'280.00', u'41116.00', u'143.00', u'4.00']
[u'6', u'Uniliver Nepal Limited', u'1', u'25500.00', u'25500.00', u'25500.00', u'80.00', u'2040000.00', u'25186.00', u'314.00']
[u'7', u'Tourism Development Bank Limited', u'2', u'233.00', u'229.00', u'229.00', u'51.00', u'11719.00', u'229.00', u'0.00']
[u'8', u'Tinau Development Bank Limited', u'1', u'300.00', u'300.00', u'300.00', u'154.00', u'46200.00', u'300.00', u'0.00']
[u'9', u'Taragaon Regency Hotel Limited', u'4', u'221.00', u'213.00', u'216.00', u'1550.00', u'334550.00', u'217.00', u'-1.00']
[u'10', u'Synergy Finance Ltd.', u'6', u'100.00', u'97.00', u'100.00', u'7991.00', u'793118.00', u'98.00', u'2.00']
[u'11', u'Swarojgar Laghu Bitta Bikas Bank Ltd.', u'9', u'2040.00', u'1921.00', u'2025.00', u'932.00', u'1859391.00', u'2000.00', u'25.00']
[u'12', u'Swabalamban Bikas Bank Limited', u'36', u'2025.00', u'1940.00', u'1940.00', u'3024.00', u'5970152.00', u'1949.00', u'-9.00']
[u'13', u'Surya Life Insurance Company Limited', u'27', u'826.00', u'773.00', u'790.00', u'5354.00', u'4322799.00', u'804.00', u'-14.00']
[u'14', u'Sunrise Bank Limited', u'7', u'415.00', u'408.00', u'415.00', u'2162.00', u'891160.00', u'412.00', u'3.00']
[u'15', u'Summit Micro Finance Development Bank Ltd.', u'4', u'2404.00', u'2311.00', u'2356.00', u'128.00', u'301158.00', u'2266.00', u'90.00']
[u'16', u'Subhechha Bikas Bank Limited', u'13', u'319.00', u'312.00', u'319.00', u'1130.00', u'356240.00', u'310.00', u'9.00']
[u'17', u'Standard Chartered Bank Limited', u'12', u'2590.00', u'2550.00', u'2555.00', u'805.00', u'2069500.00', u'2630.00', u'-75.00']
[u'18', u'Soaltee Hotel Limited', u'24', u'325.00', u'310.00', u'310.00', u'12580.00', u'3947660.00', u'320.00', u'-10.00']
[u'19', u'Siddhartha Investment Growth Scheme-1', u'1', u'15.56', u'15.56', u'15.56', u'1500.00', u'23340.00', u'15.61', u'-0.05']
[u'20', u'Siddhartha Insurance Ltd.', u'57', u'1075.00', u'1011.00', u'1075.00', u'10540.00', u'11093865.00', u'1052.00', u'23.00']
[u'21', u'Siddhartha Equity Orineted Scheme', u'4', u'9.55', u'9.50', u'9.55', u'7600.00', u'72527.00', u'9.65', u'-0.10']
[u'22', u'Siddhartha Bank Limited', u'20', u'605.00', u'591.00', u'597.00', u'4844.00', u'2904232.00', u'610.00', u'-13.00']
[u'23', u'Siddharth Finance Ltd.', u'8', u'196.00', u'180.00', u'193.00', u'677.00', u'128312.00', u'179.00', u'14.00']
[u'24', u'Shikhar Insurance Co. Ltd.', u'42', u'1424.00', u'1345.00', u'1379.00', u'6993.00', u'9595832.00', u'1377.00', u'2.00']
[u'25', u'Shangrila Development Bank Ltd.', u'3', u'380.00', u'375.00', u'378.00', u'657.00', u'248160.00', u'380.00', u'-2.00']
[u'26', u'Sewa Bikas Bank Limited', u'2', u'260.00', u'260.00', u'260.00', u'304.00', u'79040.00', u'255.00', u'5.00']
[u'27', u'Sanima Mai Hydropower Ltd.', u'33', u'768.00', u'750.00', u'760.00', u'2373.00', u'1808638.00', u'765.00', u'-5.00']
[u'28', u'Sanima Bank Limited', u'33', u'660.00', u'653.00', u'653.00', u'11727.00', u'7700213.00', u'661.00', u'-8.00']
[u'29', u'Sana Kisan Bikas Bank Ltd', u'37', u'1456.00', u'1400.00', u'1434.00', u'2863.00', u'4077092.00', u'1400.00', u'34.00']
[u'30', u'Sahayogi Bikas Bank Limited', u'1', u'375.00', u'375.00', u'375.00', u'10.00', u'3750.00', u'368.00', u'7.00']
[u'31', u'Sahara Bikas Bank Ltd.', u'2', u'980.00', u'980.00', u'980.00', u'20.00', u'19600.00', u'1000.00', u'-20.00']
[u'32', u'Sagarmatha Insurance Co. Ltd.', u'18', u'1122.00', u'1075.00', u'1075.00', u'2179.00', u'2389443.00', u'1095.00', u'-20.00']
[u'33', u'Sagarmatha  Finance Limited', u'20', u'185.00', u'170.00', u'185.00', u'3484.00', u'629111.00', u'169.00', u'16.00']
[u'34', u'Rural Microfinance Development Centre Ltd.', u'15', u'690.00', u'680.00', u'686.00', u'1490.00', u'1016830.00', u'689.00', u'-3.00']
[u'35', u'Ridi Hydropower Development Company Ltd.', u'34', u'362.00', u'343.00', u'355.00', u'648.00', u'228537.00', u'346.00', u'9.00']
[u'36', u'Reliance Lotus Finance Ltd.', u'1', u'170.00', u'170.00', u'170.00', u'1000.00', u'170000.00', u'170.00', u'0.00']
[u'37', u'Reliable Microfinance Bittiya Sanstha Ltd.', u'1', u'327.00', u'327.00', u'327.00', u'10.00', u'3270.00', u'321.00', u'6.00']
[u'38', u'Reliable Development Bank Limited', u'11', u'300.00', u'295.00', u'295.00', u'482.00', u'143941.00', u'300.00', u'-5.00']
[u'39', u'Raptibheri Bikas Bank Ltd.', u'68', u'185.00', u'177.00', u'182.00', u'1406.00', u'252988.00', u'180.00', u'2.00']
[u'40', u'Purnima Bikas Bank Ltd.', u'4', u'318.00', u'300.00', u'318.00', u'404.00', u'124866.00', u'298.00', u'20.00']
[u'41', u'Prudential Insurance Co. Ltd.', u'113', u'720.00', u'630.00', u'698.00', u'31521.00', u'21716588.00', u'655.00', u'43.00']
[u'42', u'ProgressiveFinance Limited', u'2', u'126.00', u'126.00', u'126.00', u'240.00', u'30240.00', u'128.00', u'-2.00']
[u'43', u'Professional Diyalo Bikas Bank Ltd.', u'1', u'165.00', u'165.00', u'165.00', u'11.00', u'1815.00', u'164.00', u'1.00']
[u'44', u'Prime Life Insurance Company Limited', u'89', u'1595.00', u'1550.00', u'1565.00', u'12795.00', u'20032091.00', u'1555.00', u'10.00']
[u'45', u'Prime Commercial Bank Ltd.', u'19', u'499.00', u'485.00', u'490.00', u'4224.00', u'2064184.00', u'490.00', u'0.00']
[u'46', u'Premier Insurance Co. Ltd.', u'120', u'965.00', u'895.00', u'960.00', u'26299.00', u'24644627.00', u'878.00', u'82.00']
[u'47', u'Prabhu Insurance Ltd.', u'60', u'629.00', u'590.00', u'605.00', u'17659.00', u'10658300.00', u'617.00', u'-12.00']
[u'48', u'Pokhara Finance Ltd.', u'6', u'292.00', u'285.00', u'290.00', u'1616.00', u'463864.00', u'289.00', u'1.00']
[u'49', u'Pacific Development Bank Limited', u'1', u'333.00', u'333.00', u'333.00', u'53.00', u'17649.00', u'339.00', u'-6.00']
[u'50', u'Oriental Hotels Limited', u'1', u'417.00', u'417.00', u'417.00', u'22.00', u'9174.00', u'416.00', u'1.00']
[u'51', u'NMB Sulav Investment Fund-1', u'2', u'9.90', u'9.71', u'9.90', u'3500.00', u'34365.00', u'9.90', u'0.00']
[u'52', u'NMB Bank Limited', u'12', u'424.00', u'416.00', u'421.00', u'2559.00', u'1078416.00', u'416.00', u'5.00']
[u'53', u'NLG Insurance Company Ltd.', u'38', u'891.00', u'806.00', u'842.00', u'7364.00', u'6196657.00', u'825.00', u'17.00']
[u'54', u'Nirdhan Utthan Bank Limited', u'8', u'1690.00', u'1670.00', u'1688.00', u'996.00', u'1672610.00', u'1655.00', u'33.00']
[u'55', u'NIDC Capital Markets Ltd.', u'1', u'276.00', u'276.00', u'276.00', u'500.00', u'138000.00', u'281.00', u'-5.00']
[u'56', u'NIC Asia Bank Ltd.', u'168', u'1034.00', u'1010.00', u'1012.00', u'41061.00', u'41629557.00', u'1014.00', u'-2.00']
[u'57', u'NIBL Samriddhi Fund 1', u'7', u'9.95', u'9.90', u'9.95', u'20478.00', u'203256.10', u'9.80', u'0.15']
[u'58', u'Nerude Laghubita Bikas Bank Limited', u'18', u'2038.00', u'1977.00', u'1985.00', u'1880.00', u'3750102.00', u'1960.00', u'25.00']
[u'59', u'Nepal SBI Bank Limited', u'35', u'1510.00', u'1500.00', u'1500.00', u'7476.00', u'11234652.00', u'1503.00', u'-3.00']
[u'60', u'Nepal Life Insurance Co. Ltd.', u'14', u'3520.00', u'3410.00', u'3461.00', u'1661.00', u'5730070.00', u'3475.00', u'-14.00']
[u'61', u'Nepal Investment Bank Ltd. Promoter Share', u'6', u'591.00', u'585.00', u'591.00', u'3460.00', u'2039850.00', u'600.00', u'-9.00']
[u'62', u'Nepal Investment Bank Limited', u'37', u'700.00', u'692.00', u'700.00', u'9062.00', u'6311182.00', u'695.00', u'5.00']
[u'63', u'Nepal Insurance Co. Ltd.', u'23', u'618.00', u'579.00', u'615.00', u'7147.00', u'4295495.00', u'617.00', u'-2.00']
[u'64', u'Nepal Grameen Bikas Bank  Ltd.', u'25', u'313.00', u'299.00', u'300.00', u'9497.00', u'2881799.00', u'314.00', u'-14.00']
[u'65', u'Nepal Doorsanchar Comapany Limited', u'2', u'660.00', u'659.00', u'660.00', u'1320.00', u'871000.00', u'660.00', u'0.00']
[u'66', u'Nepal Bank Limited', u'29', u'306.00', u'300.00', u'301.00', u'23894.00', u'7224247.00', u'310.00', u'-9.00']
[u'67', u'Nepal Bangladesh Bank Limited', u'49', u'436.00', u'430.00', u'436.00', u'17799.00', u'7713258.00', u'432.00', u'4.00']
[u'68', u'Neco Insurance Co. Ltd.', u'50', u'890.00', u'832.00', u'864.00', u'8940.00', u'7675605.00', u'868.00', u'-4.00']
[u'69', u'Naya Nepal Laghubitta Bikas Bank Ltd.', u'6', u'1475.00', u'1400.00', u'1410.00', u'1173.00', u'1663779.00', u'1497.00', u'-87.00']
[u'70', u'National Life Insurance Co. Ltd.', u'66', u'2630.00', u'2500.00', u'2526.00', u'9181.00', u'23332004.00', u'2550.00', u'-24.00']
[u'71', u'National Hydro Power Company Limited', u'31', u'115.00', u'110.00', u'112.00', u'34550.00', u'3886400.00', u'110.00', u'2.00']
[u'72', u'Narayani National Finance Limited', u'2', u'295.00', u'294.00', u'295.00', u'652.00', u'192140.00', u'295.00', u'0.00']
[u'73', u'NagBeli LaghuBitta Bikas Bank Ltd.', u'7', u'3570.00', u'3500.00', u'3500.00', u'303.00', u'1071390.00', u'3550.00', u'-50.00']
[u'74', u'NABIL Bank Limited Promotor Share', u'8', u'1341.00', u'1332.00', u'1332.00', u'1897.00', u'2534803.00', u'1340.00', u'-8.00']
[u'75', u'Nabil Bank Limited', u'28', u'1850.00', u'1800.00', u'1800.00', u'2496.00', u'4504646.00', u'1840.00', u'-40.00']
[u'76', u'Nabil Balance Fund 1', u'2', u'14.50', u'14.40', u'14.40', u'4797.00', u'69256.50', u'14.70', u'-0.30']
[u'77', u'Multipurpose Finance Company  Limited', u'3', u'150.00', u'150.00', u'150.00', u'33.00', u'4950.00', u'150.00', u'0.00']
[u'78', u'Muktinath Bikas Bank Ltd.', u'19', u'720.00', u'690.00', u'701.00', u'4694.00', u'3281696.00', u'720.00', u'-19.00']
[u'79', u'Mount Makalu Development Bank Ltd.', u'1', u'506.00', u'506.00', u'506.00', u'20.00', u'10120.00', u'497.00', u'9.00']
[u'80', u'Mithila LaghuBitta Bikas Bank Ltd.', u'1', u'1322.00', u'1322.00', u'1322.00', u'24.00', u'31728.00', u'1297.00', u'25.00']
[u'81', u'Miteri Development Bank Limited', u'11', u'555.00', u'535.00', u'550.00', u'3168.00', u'1726818.00', u'535.00', u'15.00']
[u'82', u'Mirmire Microfinance Development Bank Ltd.', u'84', u'2310.00', u'2150.00', u'2225.00', u'840.00', u'1877350.00', u'2280.00', u'-55.00']
[u'83', u'Malika Bikas Bank Limited', u'3', u'247.00', u'245.00', u'245.00', u'850.00', u'208350.00', u'250.00', u'-5.00']
[u'84', u'Mahila Sahayatra Microfinance Bittiya Sanstha Ltd.', u'4', u'552.00', u'522.00', u'552.00', u'40.00', u'21480.00', u'512.00', u'40.00']
[u'85', u'Lumbini General Insurance Co. Ltd.', u'55', u'670.00', u'575.00', u'610.00', u'7968.00', u'4860101.00', u'610.00', u'0.00']
[u'86', u'Life Insurance Co. Nepal', u'25', u'3877.00', u'3780.00', u'3798.00', u'2958.00', u'11241460.00', u'3872.00', u'-74.00']
[u'87', u'Laxmi Value Fund-1', u'1', u'9.95', u'9.95', u'9.95', u'3300.00', u'32835.00', u'9.94', u'0.01']
[u'88', u'Laxmi Laghubitta Bittiya Sanstha Ltd.', u'22', u'1899.00', u'1757.00', u'1800.00', u'1010.00', u'1864729.00', u'1826.00', u'-26.00']
[u'89', u'Laxmi Bank Limited', u'36', u'572.00', u'555.00', u'566.00', u'8151.00', u'4587286.00', u'569.00', u'-3.00']
[u'90', u'Kumari Bank Limited', u'21', u'399.00', u'390.00', u'392.00', u'6652.00', u'2609547.00', u'398.00', u'-6.00']
[u'91', u'Kasthamandap Development Bank Limited', u'4', u'183.00', u'180.00', u'183.00', u'287.00', u'51780.00', u'180.00', u'3.00']
[u'92', u'Kalinchowk Development Bank Ltd.', u'22', u'174.00', u'166.00', u'166.00', u'1123.00', u'189964.00', u'174.00', u'-8.00']
[u'93', u'Kalika Microcredit Development Bank Ltd.', u'19', u'1645.00', u'1582.00', u'1600.00', u'2594.00', u'4149688.00', u'1614.00', u'-14.00']
[u'94', u'Kabeli Bikas Bank Limited', u'5', u'469.00', u'453.00', u'460.00', u'124.00', u'56536.00', u'453.00', u'7.00']
[u'95', u'Jebils Finance Ltd.', u'1', u'156.00', u'156.00', u'156.00', u'100.00', u'15600.00', u'153.00', u'3.00']
[u'96', u'Innovative Development Bank Ltd.', u'3', u'540.00', u'520.00', u'540.00', u'30.00', u'15900.00', u'510.00', u'30.00']
[u'97', u'ILFCO Microfinance Bittiya Sanstha Ltd.', u'200', u'1035.00', u'980.00', u'1000.00', u'3140.00', u'3169471.00', u'1030.00', u'-30.00']
[u'98', u'ICFC Finance Limited', u'1', u'204.00', u'204.00', u'204.00', u'500.00', u'102000.00', u'204.00', u'0.00']
[u'99', u'Himalayan General Insurance Co. Ltd', u'154', u'671.00', u'600.00', u'671.00', u'57596.00', u'36967536.00', u'610.00', u'61.00']
[u'100', u'Himalayan Bank Limited', u'13', u'932.00', u'915.00', u'926.00', u'1030.00', u'954487.00', u'932.00', u'-6.00']
[u'101', u'Gurans Life Insurance Company Ltd.', u'46', u'728.00', u'661.00', u'686.00', u'12487.00', u'8592354.00', u'700.00', u'-14.00']
[u'102', u'Global IME Bank Limited', u'49', u'396.00', u'392.00', u'394.00', u'12643.00', u'4985295.00', u'395.00', u'-1.00']
[u'103', u'Garima Bikas Bank Limited', u'5', u'299.00', u'296.00', u'299.00', u'404.00', u'120036.00', u'301.00', u'-2.00']
[u'104', u'Gandaki Bikas Bank Limited', u'3', u'336.00', u'325.00', u'336.00', u'295.00', u'98375.00', u'321.00', u'15.00']
[u'105', u'First Micro Finance Development Bank Ltd.', u'15', u'722.00', u'709.00', u'709.00', u'3001.00', u'2149232.00', u'730.00', u'-21.00']
[u'106', u'Excel Development Bank Ltd.', u'19', u'754.00', u'731.00', u'741.00', u'2834.00', u'2104352.00', u'734.00', u'7.00']
[u'107', u'Everest Insurance Co. Ltd.', u'31', u'1026.00', u'930.00', u'951.00', u'4349.00', u'4225220.00', u'999.00', u'-48.00']
[u'108', u'Everest Bank Limited Con. Pref.', u'6', u'1340.00', u'1320.00', u'1320.00', u'1372.00', u'1815640.00', u'1349.00', u'-29.00']
[u'109', u'Everest Bank Limited', u'27', u'2055.00', u'2036.00', u'2050.00', u'4501.00', u'9209523.00', u'2041.00', u'9.00']
[u'110', u'Dev Bikas Bank Limited', u'8', u'181.00', u'175.00', u'175.00', u'3328.00', u'590568.00', u'184.00', u'-9.00']
[u'111', u'Deprosc Development Bank Limited', u'21', u'1820.00', u'1725.00', u'1735.00', u'6895.00', u'12041655.00', u'1759.00', u'-24.00']
[u'112', u'Country Development Bank Ltd.', u'3', u'180.00', u'180.00', u'180.00', u'180.00', u'32400.00', u'180.00', u'0.00']
[u'113', u'Civil Bank Ltd', u'51', u'255.00', u'247.00', u'250.00', u'14794.00', u'3707676.00', u'252.00', u'-2.00']
[u'114', u'Citizen Investment Trust', u'21', u'4150.00', u'4100.00', u'4135.00', u'1517.00', u'6252870.00', u'4105.00', u'30.00']
[u'115', u'Citizen Bank International Limited', u'29', u'567.00', u'553.00', u'563.00', u'5521.00', u'3109845.00', u'568.00', u'-5.00']
[u'116', u'Chilime Hydropower Company Limited', u'40', u'1175.00', u'1150.00', u'1150.00', u'4385.00', u'5083376.00', u'1166.00', u'-16.00']
[u'117', u'Chhimek Laghubitta Bikas Bank Limited', u'27', u'1775.00', u'1680.00', u'1680.00', u'2320.00', u'4030330.00', u'1755.00', u'-75.00']
[u'118', u'Century Commercial Bank Ltd.', u'27', u'316.00', u'308.00', u'314.00', u'7663.00', u'2395955.00', u'314.00', u'0.00']
[u'119', u'Butwal Power Company Limited', u'4', u'540.00', u'540.00', u'540.00', u'700.00', u'378000.00', u'540.00', u'0.00']
[u'120', u'Biratlaxmi Bikas Bank Limited', u'5', u'315.00', u'303.00', u'315.00', u'332.00', u'102712.00', u'309.00', u'6.00']
[u'121', u'Bhaktapur Finance Co. Ltd.', u'12', u'140.00', u'133.00', u'133.00', u'1321.00', u'177546.00', u'140.00', u'-7.00']
[u'122', u'Barun Hydropower Co. Ltd.', u'102', u'280.00', u'266.00', u'276.00', u'1050.00', u'286600.00', u'267.00', u'9.00']
[u'123', u'Asian Life Insurance Co. Limited', u'45', u'1300.00', u'1240.00', u'1275.00', u'9473.00', u'12147812.00', u'1304.00', u'-29.00']
[u'124', u'Arun Valley Hydropower Development Co. Ltd.', u'23', u'261.00', u'254.00', u'257.00', u'5072.00', u'1296773.00', u'256.00', u'1.00']
[u'125', u'Arun Finance Limited', u'10', u'110.00', u'104.00', u'104.00', u'1550.00', u'162080.00', u'112.00', u'-8.00']
[u'126', u'Araniko Development Bank Limited', u'5', u'208.00', u'202.00', u'207.00', u'1079.00', u'222403.00', u'199.00', u'8.00']
[u'127', u'Api Power Company Ltd.', u'449', u'373.00', u'358.00', u'368.00', u'9183.00', u'3351712.00', u'369.00', u'-1.00']
[u'128', u'Agriculture Development Bank Limited', u'37', u'528.00', u'502.00', u'506.00', u'6760.00', u'3441749.00', u'518.00', u'-12.00']
[u'129', u'Ace Development Bank Ltd.', u'4', u'290.00', u'288.00', u'290.00', u'1368.00', u'395744.00', u'290.00', u'0.00']
[u'Page 1/1\xa01']
[u'Total Amount Rs.', u'494,473,367']
[u'Total Quantity', u'704,022']
[u'Total No of Transactions', u'3,766']

为了避免最后一个数据不属于 cols，请捕获第一个 td 不是数字的位置:

for row in cols_tr.find_all_next("tr"):
    if row.find("td").text.isdigit():
         print([td.text.strip() for td in row.find_all("td")])

这只会留下表格数据，删除:

[u'Page 1/1\xa01']
[u'Total Amount Rs.', u'494,473,367']
[u'Total Quantity', u'704,022']
[u'Total No of Transactions', u'3,766']

您还可以检查返回的 tds 的长度，看看它们是否与列的长度匹配。您不想做的是对切片进行硬编码，就好像在标题之前或在您会丢失的最后一段数据之后添加了额外的行一样。

此外，如果您只想要第n个td，则不需要find_all，您可以使用nth-of-type:

for row in cols_tr.find_all_next("tr"):
    if row.find("td").text.isdigit():
         print(row.select_one("td:nth-of-type(4)").text)

这只会为您提供第四列数据:

143.00
315.00
1235.00
550.00
147.00
25500.00
233.00
300.00
221.00
100.00
2040.00
2025.00
826.00
415.00
2404.00
319.00
2590.00
325.00
15.56
1075.00
9.55
605.00
196.00
1424.00
380.00
260.00
768.00
660.00
1456.00
375.00
980.00
1122.00
185.00
690.00
362.00
170.00
327.00
300.00
185.00
318.00
720.00
126.00
165.00
1595.00
499.00
965.00
629.00
292.00
333.00
417.00
9.90
424.00
891.00
1690.00
276.00
1034.00
9.95
2038.00
1510.00
3520.00
591.00
700.00
618.00
313.00
660.00
306.00
436.00
890.00
1475.00
2630.00
115.00
295.00
3570.00
1341.00
1850.00
 ......................................

要将所有数据写入 csv 只需使用 csv.writer :并写入数据列表即可:

from bs4 import BeautifulSoup
soup = BeautifulSoup(r.content)
with open("data.csv", "w") as f:

    wr = writer(f)
    table = soup.select_one("table.table-condensed.table-hover")
    cols_tr = table.select_one("tr.unique")
    # write columns names
    wr.writerow([td.text.strip() for td in cols_tr.find_all("td")])

    # write all row data.
    wr.writerows([td.text.strip() for td in row.find_all("td")]
                    for row in cols_tr.find_all_next("tr")
                        if row.find("td").text.isdigit())

所以 data.csv 看起来像:

S.N.,Traded Companies,No. Of Transaction,Max Price,Min Price,Closing Price,Traded Shares,Amount,Previous Closing,Difference Rs.
1,Yeti  Development Bank Limited,7,143.00,140.00,140.00,1777.00,252897.00,143.00,-3.00
2,Western Development Bank Limited,1,315.00,315.00,315.00,500.00,157500.00,319.00,-4.00
3,Vijaya laghubitta Bittiya Sanstha Ltd.,162,1235.00,1172.00,1195.00,3188.00,3853176.00,1225.00,-30.00
4,United Insurance Co. (Nepal) Ltd.,111,550.00,500.00,540.00,50433.00,26399127.00,510.00,30.00
5,Unique Finance Ltd.,6,147.00,145.00,147.00,280.00,41116.00,143.00,4.00
6,Uniliver Nepal Limited,1,25500.00,25500.00,25500.00,80.00,2040000.00,25186.00,314.00
7,Tourism Development Bank Limited,2,233.00,229.00,229.00,51.00,11719.00,229.00,0.00
8,Tinau Development Bank Limited,1,300.00,300.00,300.00,154.00,46200.00,300.00,0.00
9,Taragaon Regency Hotel Limited,4,221.00,213.00,216.00,1550.00,334550.00,217.00,-1.00
10,Synergy Finance Ltd.,6,100.00,97.00,100.00,7991.00,793118.00,98.00,2.00
11,Swarojgar Laghu Bitta Bikas Bank Ltd.,9,2040.00,1921.00,2025.00,932.00,1859391.00,2000.00,25.00
12,Swabalamban Bikas Bank Limited,36,2025.00,1940.00,1940.00,3024.00,5970152.00,1949.00,-9.00
13,Surya Life Insurance Company Limited,27,826.00,773.00,790.00,5354.00,4322799.00,804.00,-14.00
14,Sunrise Bank Limited,7,415.00,408.00,415.00,2162.00,891160.00,412.00,3.00
......................................

要迭代日期范围，请使用逻辑 here