Introduction to three methods of downloading files using python

When you encounter the situation of downloading files during Python development, the most common method is to use the urllib or urllib2 module through Http.

Of course you can also use ftplib to download files from the ftp site. In addition, Python also provides another method, requests.

Let’s take a look at how to download the zip file in three ways:

Method one:

import urllib 
import urllib2 
import requests
print "downloading with urllib" 
url = 'http://www.pythontab.com/test/demo.zip'  
print "downloading with urllib"
urllib.urlretrieve(url, "demo.zip")

Method two:

import urllib2
print "downloading with urllib2"
url = 'http://www.pythontab.com/test/demo.zip' 
f = urllib2.urlopen(url) 
data = f.read() 
with open("demo2.zip", "wb") as code:     
    code.write(data)

Method three:

import requests 
print "downloading with requests"
url = 'http://www.pythontab.com/test/demo.zip' 
r = requests.get(url) 
with open("demo3.zip", "wb") as code:
     code.write(r.content)

It seems that using urllib is the easiest, just one statement. Of course you can abbreviate urllib2 as:

f = urllib2.urlopen(url)

with open("demo2.zip", "wb") as code:

code.write(f.read())

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