with open(filename, "ab") as f: # 'ab' = append binary for chunk in response.iter_content(8192): f.write(chunk) import requests from concurrent.futures import ThreadPoolExecutor urls = [ "https://example.com/doc1.pdf", "https://example.com/doc2.pdf", ]

import requests Download and save a PDF url = "https://example.com/document.pdf" response = requests.get(url)

print(f"Saved: filename") download_pdf("https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf", "sample.pdf") 2. Handle Authentication & Headers (Many real PDFs) import requests headers = "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"

from selenium import webdriver driver = webdriver.Chrome() driver.get("https://example.com/js-generated-pdf") pdf_url = driver.find_element("tag name", "embed").get_attribute("src") Download normally with requests import requests r = requests.get(pdf_url) with open("output.pdf", "wb") as f: f.write(r.content)

response = requests.get("https://secure-site.com/report.pdf", headers=headers, cookies=cookies, auth=("username", "password")) # Basic auth import requests url = "https://example.com/huge.pdf" response = requests.get(url, stream=True)