Table of Contents
✅ Use the requests library to download files (recommended method)
Sample code: Download the file and save it locally
? illustrate:
? Get the original file name (optional optimization)
? Additional suggestions for handling redirects or large files
⚠️ Notes
Home Backend Development Python Tutorial python download file from url example

python download file from url example

Jul 26, 2025 am 04:00 AM
php java programming

Use the requests library and set stream=True to achieve efficient file download and avoid memory overflow; 2. Read data in chunks through response.iter_content and write files in binary mode, which is suitable for all types of file types; 3. You can automatically extract the original file name from the URL and save it by combining urlparse and os.path.basename; 4. It is recommended to add timeout parameters and simulate browser request headers to improve download stability; 5. Make sure that the URL is a direct file link, and pay attention to the access restrictions and disk space of the target website. This method is suitable for most common scenarios, and the file has been successfully downloaded as: downloaded_file.pdf.

python download file from url example

Downloading files is a common operation in Python. Here is a simple and practical example showing how to download files from URLs, suitable for most common scenarios.

python download file from url example

This is the most commonly used and concise method. You need to install requests first:

 pip install requests

Sample code: Download the file and save it locally

 import requests

url = "https://example.com/file.pdf" # Replace with the file link you want to download local_filename = "downloaded_file.pdf" # Saved local file name response = requests.get(url, stream=True)

# Check whether the request is successful if response.status_code == 200:
    with open(local_filename, 'wb') as file:
        for chunk in response.iter_content(chunk_size=8192): # 8KB is read each time
            file.write(chunk)
    print(f"File has been successfully downloaded as: {local_filename}")
else:
    print(f"Download failed, status code: {response.status_code}")

? illustrate:

  • stream=True : means streaming download, suitable for large files, and avoid memory overflow.
  • iter_content(chunk_size=8192) : read in chunks to save memory.
  • Write files using binary mode 'wb' , which is suitable for all file types (PDF, pictures, videos, etc.).

? Get the original file name (optional optimization)

If you want to automatically save with the file name in the URL:

python download file from url example
 import os
from urllib.parse import urlparse

# Extract file name from URL parsed_url = urlparse(url)
filename = os.path.basename(parsed_url.path)
if not filename:
    filename = "downloaded_file"

# Save as extracted file name local_filename = filename

? Additional suggestions for handling redirects or large files

  • Add timeout to avoid jamming:

     response = requests.get(url, stream=True, timeout=10)
  • Add request headers (some sites require):

    python download file from url example
     headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)'}
    response = requests.get(url, headers=headers, stream=True)

    ⚠️ Notes

    • Make sure the URL is a direct file link, not a web page.
    • Crawlers are prohibited from downloading, and cookies or login status are required.
    • Check disk space, especially large files before downloading.

    Basically that's it. Using requests stream=True is the safest way and is suitable for most situations.

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