Getting href urls using beautifulsoup in python-CodePudding

I am trying to download all csv files from the following url: https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices ,but unfortunately I could not succeed as expected. Here is my attempt:

soup = BeautifulSoup(page.content, "html.parser")
market_dataset = soup.findAll("table",{"class":"table table-striped table-condensed table-clean"})
for a in market_dataset.find_all('a', href=True):
    print("Found the URL:", a['href'])

Can anyone please help me. How can I get all urls' of the csv files.

CodePudding user response：

Select your elements more specific e.g. with css selectors and be aware you have to concat the href with baseUrl:

['https://emi.ea.govt.nz' a['href'] for a in soup.select('td.csv a')]

or simply change your code and use find() instead of findAll() to locate the table, what causes the following attribute error:

AttributeError: ResultSet object has no attribute 'find_all'. You're probably treating a list of elements like a single element. Did you call find_all() when you meant to call find()?

market_dataset = soup.find("table",{"class":"table table-striped table-condensed table-clean"})

Note: In new code use strict find_all() instead of old syntax findAll() or a mix of both.

Example

from bs4 import BeautifulSoup
import requests

url = 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices'

r = requests.get(url)
soup = BeautifulSoup(r.text, 'html.parser')

['https://emi.ea.govt.nz' a['href'] for a in soup.select('td.csv a')]

Output

['https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220318_FinalEnergyPrices_I.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220317_FinalEnergyPrices_I.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220316_FinalEnergyPrices.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220315_FinalEnergyPrices.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220314_FinalEnergyPrices.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220313_FinalEnergyPrices.csv',
 'https://emi.ea.govt.nz/Wholesale/Datasets/FinalPricing/EnergyPrices/20220312_FinalEnergyPrices.csv',...]