Urllib2 file download

Post as a guest Name. Email Required, but never shown. The Overflow Blog. Introducing Content Health, a new way to keep the knowledge base up-to-date. Podcast what if you could invest in your favorite developer? Featured on Meta. Now live: A fully responsive profile. Reducing the weight of our footer. Linked See more linked questions. Related Hot Network Questions. Question feed. In the above code, 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. Run the above script and go to your "Downloads" directory. You should see your downloaded file named "cat.

Note : This urllib. Because of this, I wouldn't recommend using it in favor of one of the methods below. We've included it here due to is popularity in Python 2. Another way to download files in Python is via the urllib2 module. Oct 16, Jul 18, May 16, Apr 22, Feb 7, Dec 4, Sep 24, Sep 13, May 30, Jan 7, Oct 25, Oct 15, The return value is a tuple consisting of a local filename and either an email.

The caller must then open and read the contents of filename. If filename is not given and the URL refers to a local file, the input filename is returned. If the URL is non-local and filename is not given, the filename is the output of tempfile. If reporthook is given, it must be a function accepting three numeric parameters: A chunk number, the maximum size chunks are read in and the total size of the download -1 if unknown.

It will be called once at the start and after each chunk of data is read from the network. Variable that specifies the user agent of the opener object. To get urllib to tell servers that it is a particular user agent, set this in a subclass as a class variable or in the constructor before calling the base constructor. For the 30x response codes listed above, the Location header is used to fetch the actual URL. For response codes authentication required , basic HTTP authentication is performed.

For the 30x response codes, recursion is bounded by the value of the maxtries attribute, which defaults to According to the letter of RFC , and responses to POST requests must not be automatically redirected without confirmation by the user. In reality, browsers do allow automatic redirection of these responses, changing the POST to a GET, and urllib reproduces this behaviour.

The parameters to the constructor are the same as those for URLopener. The default implementation asks the users for the required information on the controlling terminal. A subclass may override this method to support more appropriate behavior if needed.

The FancyURLopener class offers one additional method that should be overloaded to provide the appropriate behavior:. Return information needed to authenticate the user at the given host in the specified security realm. The return value should be a tuple, user, password , which can be used for basic authentication. The implementation prompts for this information on the terminal; an application should override this method to use an appropriate interaction model in the local environment.

Currently, only the following protocols are supported: HTTP versions 0. The caching feature of urlretrieve has been disabled until someone finds the time to hack proper processing of Expiration time headers. This can sometimes cause confusing error messages. The urlopen and urlretrieve functions can cause arbitrarily long delays while waiting for a network connection to be set up.

This means that it is difficult to build an interactive web client using these functions without using threads. The data returned by urlopen or urlretrieve is the raw data returned by the server. This may be binary data such as an image , plain text or for example HTML.

The HTTP protocol provides type information in the reply header, which can be inspected by looking at the Content-Type header. If the returned data is HTML, you can use the module html. The code handling the FTP protocol cannot differentiate between a file and a directory. This can lead to unexpected behavior when attempting to read a URL that points to a file that is not accessible.

This can cause misleading results when you try to fetch a file whose read permissions make it inaccessible; the FTP code will try to read it, fail with a error, and then perform a directory listing for the unreadable file.

Functions defined by this module are used internally by the urllib. The typical response object is a urllib. Returns the headers of the response in the form of an EmailMessage instance. Navigation index modules next previous Python ». Note The request will not work as expected if the data object is unable to deliver its content more than once e. OpenerDirector objects open URLs in three stages: The order in which these methods are called within each stage is determined by sorting the handler instances.

These are intended for direct use: BaseHandler. Note The default implementation of this method does not strictly follow RFC , which says that and responses to POST requests must not be automatically redirected without confirmation by the user. For error codes, the response object is returned immediately. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

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