Recommended Reading : Python with Statement. If you love Linux commands and want to have similar flavor in your Python program, you can use wget library to download the file from a URL.
Python wget library is not part of the default installation, so you can install it using the PIP package manager.
The destination file argument is optional. Sometimes we get short URLs that redirect to the actual file. The requests library get method automatically follows the redirect and download the actual file.
It will require a lot of memory and might cause out of memory error. You can also download large files in chunks. Write the following program. Now run the program, and check your download location, you will found a file has been downloaded. Now you will learn how can you download file with a progress bar. First of all you have to install tqdm module. Now run the following command on your terminal. This is very nice. 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. The urlopen method of the urllib2 module returns an object that contains file data. To read the contents of. Note that in Python 3, urllib2 was merged in to urllib as urllib. Therefore, this script works only in Python 2. Downloading a file to your preferred directory with a single command is cool enough. If so, the -o flag is the answer!
Below, run the basic wget command syntax to download the wget. So instead of wget. Perhaps you want to download a newer version of a file you previously downloaded. If so, adding the --timestamp option in your wget command will do the trick. Applications on a website tend to be updated over time, and the --timestamp option checks for the updated version of the file in the specified URL.
The wget command below checks --timestamp and downloads the newer version of the wget. If the file wget. Most websites require a user to be logged in to access or download some files and content. To make this possible, Wget offers the --user and --password options. With these options, Wget provides a username and password to authenticate your connection request when downloading from a website.
The domain. The command also creates a log file in the working directory instead of printing output on the console. You may also put several options together, which do not require arguments. Below, you can see that instead of writing options separately -d -r -c , you can combine them in this format -drc. Rather than just a single web page, you may also want to download an entire website to see how the website is built.
Wget downloads all the files that make up the entire website to the local-dir folder, as shown below. The command below outputs the same result as the previous one you executed. The difference is that the --wait option sets a second interval in downloading each web page. While the --limit option sets the download speed limit to 50K mbps.
0コメント