使用beautifulsoup直接抓取HTML表格？

Question

Is there any direct way to scrape HTML table? It would be great if we give the class of HTML table and it provides the results?

For example, I need to get table for this URL

I can use this procedure but I need a clean or direct solution

Answer 1

Well, then try this:

import requests
import pandas as pd

url = "https://buchholz-stadtwerke.de/wasseranalyse.html"

df = pd.read_html(requests.get(url).text, flavor="bs4")
df = pd.concat(df)
df.to_csv("data.csv", index=False)
print(df)

Output:

[                    Parameter  Einheit    Grenzwert Messwert, Februar 2020
0            Wassertemperatur       °C          NaN                     98
1         Leitfähigkeit (25°)    µS/cm         2790                    302
2   Sauerstoff (elektrochem.)     mg/l          NaN                    109
3                     pH-Wert      NaN  6,5 bis 9,5                    806
4             Sättigungsindex      NaN          NaN                    001
5         Karbonathärte (dH°)      °dH          NaN                    454
6           Gesamthärte (dH°)      °dH          NaN                    645
7                Härtebereich      NaN          NaN                  weich
8         Calcitlösekapazität     mg/l            5                    -01
and so on...

Also, this spits out a .csv file with the data from the table.

EDIT:

This sort of feels like a hack, but it works. Based on the comment and the URL, you can loop over the tables from the df and split them up in separate files.

import requests
import pandas as pd

url = "https://www.swd-ag.de/energie-wasser/wasser/trinkwasseranalyse/"

df = pd.read_html(io=requests.get(url).text, flavor="bs4")
for index, table in enumerate(df, start=1):
    table.to_csv(f"table_{index}.csv", index=False)