Urllib2 download file example

We will be covering each part individually except for urllib. The official documentation actually recommends that you might want to check out the 3rd party library, requests , for a higher-level HTTP client interface. However, we believe that it can be useful to know how to open URLs and interact with them without using a 3rd party and it may also help you appreciate why the requests package is so popular. Note : This urllib. In the earlier snippet, we first import the urllib.

Next, we create a variable url that contains the path of the file to be downloaded. Keep in mind that you can pass any filename as the second parameter and that is the location and name that your file will have, assuming you have the correct permissions.

The open method accepts two parameters, the path to the local file and the mode in which data will be written. We have explained how to use urllib module to download remote files. Besides the recently introduced methods, we hope you can leverage what we are sharing in your work. The remote server accepts the incoming values and formats a plain text response to send back. The return value from urlopen gives access to the headers from the HTTP server through the info method, and the data for the remote resource via methods like read and readlines.

When you do include the data, the request being made is a POST request, where the url will be your post url, and the parameter will be http post content.

The reason why you would want to do that is that some websites dislike being browsed by programs. The example below, use the Mozilla 5. To send back.

Through the information technique, and the information for the distant asset using strategies like Peruse and readlines. Moreover, the document object that is returned by urlopen is iterable. In its least difficult structure, you make a solicitation object that indicates the URL you need to get. One way to do this is to setup our own ProxyHandler , with no proxies defined. This is done using similar steps to setting up a Basic Authentication handler:.

Currently urllib. However, this can be enabled by extending urllib. The Python support for fetching resources from the web is layered. As of Python 2. This can be useful in applications which have to fetch web pages. By default the socket module has no timeout and can hang. Currently, the socket timeout is not exposed at the http. However, you can set the default timeout globally for all sockets using.

Browser sniffing is a very bad practice for website design - building sites using web standards is much more sensible. Unfortunately a lot of sites still send different versions to different browsers. In my case I have to use a proxy to access the internet at work. If you attempt to fetch localhost URLs through this proxy it blocks them. IE is set to use the proxy, which urllib picks up on. In order to test scripts with a localhost server, I have to prevent urllib from using the proxy. Navigation index modules next previous Python ».

Request url , data with urllib. Request url , data , headers with urllib. URLError as e HTTPError as e