I am trying to create a list containing all unique year links from a website (see below).
When I execute the append function it gives me a huge list containing dupli-multiplicate entries.
I need to get a list containing only the unique year links.
The website : https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html
Code written so far :
from bs4 import BeautifulSoup
import requests
import csv
import pandas as pd
import re
URL = 'https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html'
headers1 = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36",
"X-Amzn-Trace-Id": "Root=1-61acac03-6279b8a6274777eb44d81aae",
"X-Client-Data": "CJW2yQEIpLbJAQjEtskBCKmdygEIuevKAQjr8ssBCOaEzAEItoXMAQjLicwBCKyOzAEI3I7MARiOnssB" }
page = requests.get(URL, headers = headers1)
soup = BeautifulSoup(page.content,"html.parser")
year = []
for link in soup.find_all('a', href=lambda href: href and "category" in href):
print(link.get('href'))
#year.append(link.get('href'))
#print(year)
The desired result would look like this (but I need this in list format):
https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html
/apofaseis-gnomodotiseis/itemlist/category/83-2022.html
/apofaseis-gnomodotiseis/itemlist/category/78-2021.html
/apofaseis-gnomodotiseis/itemlist/category/71-2020.html
/apofaseis-gnomodotiseis/itemlist/category/4-2019.html
/apofaseis-gnomodotiseis/itemlist/category/5-2018.html
/apofaseis-gnomodotiseis/itemlist/category/6-2017.html
/apofaseis-gnomodotiseis/itemlist/category/7-2016.html
/apofaseis-gnomodotiseis/itemlist/category/8-2015.html
/apofaseis-gnomodotiseis/itemlist/category/9-2014.html
/apofaseis-gnomodotiseis/itemlist/category/10-2013.html
/apofaseis-gnomodotiseis/itemlist/category/11-2012.html
/apofaseis-gnomodotiseis/itemlist/category/12-2011.html
/apofaseis-gnomodotiseis/itemlist/category/13-2010.html
/apofaseis-gnomodotiseis/itemlist/category/18-2009.html
/apofaseis-gnomodotiseis/itemlist/category/19-2008.html
/apofaseis-gnomodotiseis/itemlist/category/20-2007.html
/apofaseis-gnomodotiseis/itemlist/category/21-2006.html
/apofaseis-gnomodotiseis/itemlist/category/22-2005.html
/apofaseis-gnomodotiseis/itemlist/category/23-2004.html
/apofaseis-gnomodotiseis/itemlist/category/24-2003.html
/apofaseis-gnomodotiseis/itemlist/category/25-2002.html
/apofaseis-gnomodotiseis/itemlist/category/26-2001.html
/apofaseis-gnomodotiseis/itemlist/category/27-2000.html
/apofaseis-gnomodotiseis/itemlist/category/44-1999.html
/apofaseis-gnomodotiseis/itemlist/category/45-1998.html
/apofaseis-gnomodotiseis/itemlist/category/48-1997.html
/apofaseis-gnomodotiseis/itemlist/category/47-1996.html
/apofaseis-gnomodotiseis/itemlist/category/46-1995.html
/apofaseis-gnomodotiseis/itemlist/category/49-1994.html
CodePudding user response：
Use a set as the intermediate storage for the HREFs then convert to a list later.
from bs4 import BeautifulSoup
import requests
URL = 'https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html'
headers1 = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36",
"X-Amzn-Trace-Id": "Root=1-61acac03-6279b8a6274777eb44d81aae",
"X-Client-Data": "CJW2yQEIpLbJAQjEtskBCKmdygEIuevKAQjr8ssBCOaEzAEItoXMAQjLicwBCKyOzAEI3I7MARiOnssB"}
page = requests.get(URL, headers=headers1)
soup = BeautifulSoup(page.content, "lxml")
year = set()
for link in soup.find_all('a', href=lambda href: href and "category" in href):
year.add(link.get('href'))
print(list(year))
CodePudding user response：
How to fix?
Just check if the link is not in your list of links - So it is True append it to your list:
if link.get('href') not in year:
year.append(link.get('href'))
Note
The desired result would look like this (but I need this in list format)
This is not a list in the sense of data structure it is a printed version of each single element of a list.
Alternativ
Example
from bs4 import BeautifulSoup
import requests
URL = 'https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html'
headers1 = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36",
"X-Amzn-Trace-Id": "Root=1-61acac03-6279b8a6274777eb44d81aae",
"X-Client-Data": "CJW2yQEIpLbJAQjEtskBCKmdygEIuevKAQjr8ssBCOaEzAEItoXMAQjLicwBCKyOzAEI3I7MARiOnssB" }
page = requests.get(URL, headers = headers1)
soup = BeautifulSoup(page.content,"html.parser")
year = []
for link in soup.find_all('a', href=lambda href: href and "category" in href):
if link.get('href') not in year:
year.append(link.get('href'))
print(year)
Output
['https://www.epant.gr/apofaseis-gnomodotiseis/itemlist/category/78-2021.html', '/apofaseis-gnomodotiseis/itemlist/category/83-2022.html', '/apofaseis-gnomodotiseis/itemlist/category/78-2021.html', '/apofaseis-gnomodotiseis/itemlist/category/71-2020.html', '/apofaseis-gnomodotiseis/itemlist/category/4-2019.html', '/apofaseis-gnomodotiseis/itemlist/category/5-2018.html', '/apofaseis-gnomodotiseis/itemlist/category/6-2017.html', '/apofaseis-gnomodotiseis/itemlist/category/7-2016.html', '/apofaseis-gnomodotiseis/itemlist/category/8-2015.html', '/apofaseis-gnomodotiseis/itemlist/category/9-2014.html', '/apofaseis-gnomodotiseis/itemlist/category/10-2013.html', '/apofaseis-gnomodotiseis/itemlist/category/11-2012.html', '/apofaseis-gnomodotiseis/itemlist/category/12-2011.html', '/apofaseis-gnomodotiseis/itemlist/category/13-2010.html', '/apofaseis-gnomodotiseis/itemlist/category/18-2009.html', '/apofaseis-gnomodotiseis/itemlist/category/19-2008.html', '/apofaseis-gnomodotiseis/itemlist/category/20-2007.html', '/apofaseis-gnomodotiseis/itemlist/category/21-2006.html', '/apofaseis-gnomodotiseis/itemlist/category/22-2005.html', '/apofaseis-gnomodotiseis/itemlist/category/23-2004.html', '/apofaseis-gnomodotiseis/itemlist/category/24-2003.html', '/apofaseis-gnomodotiseis/itemlist/category/25-2002.html', '/apofaseis-gnomodotiseis/itemlist/category/26-2001.html', '/apofaseis-gnomodotiseis/itemlist/category/27-2000.html', '/apofaseis-gnomodotiseis/itemlist/category/44-1999.html', '/apofaseis-gnomodotiseis/itemlist/category/45-1998.html', '/apofaseis-gnomodotiseis/itemlist/category/48-1997.html', '/apofaseis-gnomodotiseis/itemlist/category/47-1996.html', '/apofaseis-gnomodotiseis/itemlist/category/46-1995.html', '/apofaseis-gnomodotiseis/itemlist/category/49-1994.html']