我正在尝试使用python bs4在Wikipedia中通过网络抓取数据表。但是我被这个问题困扰。获取数据值时,我的代码未获取第一列或索引零。我觉得索引有问题,但我无法弄清楚。请帮忙。见
response_obj = requests.get('https://en.wikipedia.org/wiki/Metro_Manila').text
soup = BeautifulSoup(response_obj,'lxml')
Neighborhoods_MM_Table = soup.find('table', {'class':'wikitable sortable'})
rows = Neighborhoods_MM_Table.select("tbody > tr")[3:8]
cities = []
for row in rows:
city = {}
tds = row.select('td')
city["City or Municipal"] = tds[0].text.strip()
city["%_Population"] = tds[1].text.strip()
city["Population"] = float(tds[2].text.strip().replace(",",""))
city["area_sqkm"] = float(tds[3].text.strip().replace(",",""))
city["area_sqm"] = float(tds[4].text.strip().replace(",",""))
city["density_sqm"] = float(tds[5].text.strip().replace(",",""))
city["density_sqkm"] = float(tds[6].text.strip().replace(",",""))
cities.append(city)
print(cities)
df=pd.DataFrame(cities)
df.head()
import requests
from bs4 import BeautifulSoup
import pandas as pd
def main(url):
r = requests.get(url)
soup = BeautifulSoup(r.content, 'html.parser')
target = [item.get_text(strip=True) for item in soup.findAll(
"td", style="text-align:right") if "%" in item.text] + [""]
df = pd.read_html(r.content, header=0)[5]
df = df.iloc[1: -1]
df['Population (2015)[3]'] = target
print(df)
df.to_csv("data.csv", index=False)
main("https://en.wikipedia.org/wiki/Metro_Manila")
输出:在线查看
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