網(wǎng)絡(luò)抓取時(shí)收到 AttributeError 但我不確定我做錯(cuò)了什么？AttributeError 是什么意思？ response_obj = requests.get('https://en.wikipedia.org/wiki/Demographics_of_New_York_City').text soup = BeautifulSoup(response_obj,'lxml') Population_Census_Table = soup.find('table', {'class':'wikitable sortable'})準(zhǔn)備表 rows = Population_Census_Table.select("tbody > tr")[3:8] jurisdiction = [] for row in rows: jurisdiction = {} tds = row.select('td') jurisdiction["jurisdiction"] = tds[0].text.strip() jurisdiction["population_census"] = tds[1].text.strip() jurisdiction["%_white"] = float(tds[2].text.strip().replace(",","")) jurisdiction["%_black_or_african_amercian"] = float(tds[3].text.strip().replace(",","")) jurisdiction["%_Asian"] = float(tds[4].text.strip().replace(",","")) jurisdiction["%_other"] = float(tds[5].text.strip().replace(",","")) jurisdiction["%_mixed_race"] = float(tds[6].text.strip().replace(",","")) jurisdiction["%_hispanic_latino_of_other_race"] = float(tds[7].text.strip().replace(",","")) jurisdiction["%_catholic"] = float(tds[7].text.strip().replace(",","")) jurisdiction["%_jewish"] = float(tds[8].text.strip().replace(",","")) jurisdiction.append(jurisdiction)` `print(jurisdiction) 屬性錯(cuò)誤 ---> 18 jurisdiction.append(jurisdiction) AttributeError: 'dict' object has no attribute 'append'
1 回答
回首憶惘然
TA貢獻(xiàn)1847條經(jīng)驗(yàn) 獲得超11個(gè)贊
您從jurisdiction列表開始，然后立即將其作為字典。然后，您將其視為 dict，直到您嘗試再次將其視為列表的錯(cuò)誤行。我認(rèn)為您在開始時(shí)需要為列表命名。可能您的意思是司法管轄區(qū)（復(fù)數(shù)）作為列表。但是，IMO 還有另外兩個(gè)領(lǐng)域也肯定需要修復(fù)：
find返回一個(gè)表。dict 中的標(biāo)簽/鍵表示您想要稍后的表（不是第一個(gè)匹配項(xiàng)）
您的目標(biāo)表的索引不正確
你想要這樣的東西：
import requests, re
from bs4 import BeautifulSoup
response_obj = requests.get('https://en.wikipedia.org/wiki/Demographics_of_New_York_City').text
soup = BeautifulSoup(response_obj,'lxml')
Population_Census_Table = soup.select_one('.wikitable:nth-of-type(5)') #use css selector to target correct table.
jurisdictions = []
rows = Population_Census_Table.select("tbody > tr")[3:8]
for row in rows:
jurisdiction = {}
tds = row.select('td')
jurisdiction["jurisdiction"] = tds[0].text.strip()
jurisdiction["population_census"] = tds[1].text.strip()
jurisdiction["%_white"] = float(tds[2].text.strip().replace(",",""))
jurisdiction["%_black_or_african_amercian"] = float(tds[3].text.strip().replace(",",""))
jurisdiction["%_Asian"] = float(tds[4].text.strip().replace(",",""))
jurisdiction["%_other"] = float(tds[5].text.strip().replace(",",""))
jurisdiction["%_mixed_race"] = float(tds[6].text.strip().replace(",",""))
jurisdiction["%_hispanic_latino_of_other_race"] = float(tds[7].text.strip().replace(",",""))
jurisdiction["%_catholic"] = float(tds[10].text.strip().replace(",",""))
jurisdiction["%_jewish"] = float(tds[12].text.strip().replace(",",""))
jurisdictions.append(jurisdiction)
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