Introduction to 10 ways to download files in Python

In Python, we can use a variety of methods to implement file download function. This article will introduce 10 different Python file download methods and provide detailed code examples.

1. Use modules

import 

url = '/'
filename = ''

(url, filename)
print(f"The file has been downloaded: {filename}")

2. Use the requests library (easy way)

import requests

url = '/'
filename = ''

response = (url)
with open(filename, 'wb') as f:
    ()
print("Download is complete!")

3. Use the requests library (with progress bar)

import requests
from tqdm import tqdm

url = '/'
filename = ''

response = (url, stream=True)
total_size = int(('content-length', 0))
block_size = 1024  # 1KB

progress_bar = tqdm(total=total_size, unit='iB', unit_scale=True)
with open(filename, 'wb') as f:
    for data in response.iter_content(block_size):
        progress_bar.update(len(data))
        (data)
progress_bar.close()
print("\nDownload is complete!")

4. Use the wget library

import wget

url = '/'
filename = (url)
print(f"\nThe file has been downloaded: {filename}")

5. Use (standard library)

import 
import 

url = '/'
parsed_url = (url)
filename = ''

conn = (parsed_url.netloc)
("GET", parsed_url.path)
response = ()

with open(filename, 'wb') as f:
    (())
()
print("Download is complete!")

6. Use aiohttp (asynchronous download)

import aiohttp
import asyncio

async def download_file(url, filename):
    async with () as session:
        async with (url) as response:
            with open(filename, 'wb') as f:
                while True:
                    chunk = await (1024)
                    if not chunk:
                        break
                    (chunk)
    print(f"The file has been downloaded: {filename}")

url = '/'
filename = ''

(download_file(url, filename))

7. Use pycurl (high performance download)

import pycurl
from io import BytesIO

url = '/'
filename = ''

buffer = BytesIO()
c = ()
(, url)
(, buffer)
()
()

with open(filename, 'wb') as f:
    (())
print("Download is complete!")

8. Use the urllib3 library

import urllib3

url = '/'
filename = ''

http = ()
response = ('GET', url)

with open(filename, 'wb') as f:
    ()
print("Download is complete!")

9. Use ftplib to download FTP files

from ftplib import FTP

ftp = FTP('')
(user='username', passwd='password')
filename = 'remote_file.zip'
local_filename = 'local_file.zip'

with open(local_filename, 'wb') as f:
    (f'RETR {filename}', )
()
print("FTP file download is completed!")

10. Download using scp (via paramiko)

import paramiko

host = ''
port = 22
username = 'user'
password = 'password'
remote_path = '/path/to/remote/'
local_path = ''

ssh = ()
ssh.set_missing_host_key_policy(())
(host, port, username, password)

sftp = ssh.open_sftp()
(remote_path, local_path)
()
()
print("The SCP file download is completed!")

Summarize

This article introduces 10 ways to download files in Python, including:

Standard library method
Simple library method
How to take progress bar in library
Library-specific method
Standard library method
Asynchronous Method
High-performance method
8.urllib3 library method
FTP Download
SCP Download

Depending on different needs and scenarios, you can choose the most suitable method. For simple download tasks, the requests library is the most convenient choice; for large file downloads, requests or asynchronous aiohttp with progress bars are more suitable; for special protocols such as FTP/SCP, special libraries are required.

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