从多个 web 站点创建多个表

Question

I'm in the process of creating a table with pandas that contain a certain value. For example I want to paste the links from different years of the Premier League and get in multiple rows how a particular team is doing that year. I would also like to have the link in the first column from which the information comes.

import requests
import pandas as pd

url = 'https://www.skysports.com/premier-league-table'
html = requests.get(url).content
df_list = pd.read_html(html)
df = df_list[-1]

contain = df[df["Team"].str.contains("Liverpool")]

print(contain)

Here I already have the first approach for a specific year. So I'm told here how Liverpool is doing this year. However, I would still like to get more information on how Liverpool has fared in the other years. For example for the year 21/22 ( https://www.skysports.com/premier-league-table/2021 ).

So I would like to add another row with the dates for 21/22, 20/21, etc.. At the end there should be several rows of dates with the information and the source.

At the moment I get this:
    #       Team  Pl  W  ...   A  GD  Pts  Last 6
9  10  Liverpool   8  2  ...  12   8   10     NaN

I would like to get this:
    #       Team  Pl  W  ...   A  GD  Pts  Last 6  Link
9  10  Liverpool   8  2  ...  12   8   10     NaN  https://www.sky...
1  2   Liverpool   8  28 ...  12  68   92     NaN  https://www.sky...
...

Answer 1

You can create a one-column df and merge it by the default index 0

urldf=pd.DataFrame([url],columns=["Link"]) 
contain=contain.reset_index()
contain = pd.merge(contain,urldf,left_index=True,right_index=True)

Here is a related question Merge two dataframes by index

You can do this for all the years and use pandas.concat to make the desired outcome dataframe