How to Download Torrent Files in Python

To download torrent files with Python, you can use the libtorrent library, which provides a Python wrapper around the C++ libtorrent library. Here are the steps to do it:

1. Install the libtorrent library with pip:

pip install libtorrent

1. Define a function to download the torrent file using libtorrent:

import libtorrent as lt

def download_torrent_file(url, file_name):
ses = lt.session()
params = {
‘save_path’: ‘.’, # download to the current directory
‘storage_mode’: lt.storage_mode_t(2), # use storage_mode_t(2) to create files in sparse mode
‘url’: url
}
handle = ses.add_torrent(params)
print(‘Downloading:’, file_name)
while (not handle.is_seed()):
s = handle.status()
state_str = [‘queued’, ‘checking’, ‘downloading metadata’, ‘downloading’, ‘finished’, ‘seeding’, ‘allocating’]
print(f’\r{file_name}: {state_str[s.state]} ({s.progress:.1%})’, end=’‘)
time.sleep(1)
print(‘\nDownload finished!’)

3. Call the `download_torrent_file()` function with the URL of the torrent file and the desired file name:

url = ‘https://example.com/my-torrent-file.torrent';
file_name = ‘my-torrent-file.torrent’
download_torrent_file(url, file_name)

With this approach, you can download torrent files programmatically using Python and the `libtorrent` library.

Note: Downloading copyrighted material may be illegal in your jurisdiction. Please make sure that you have the necessary permission before downloading any torrent files.

## To get information about a torrent file using `libtorrent` in Python
To get information about a torrent file using `libtorrent` in Python, you can use the `torrent_info` class. Here are the steps to do it:

1. Initialize a `session` object and add the torrent file:

import libtorrent as lt

ses = lt.session()
params = {
‘save_path’: ‘.’, # download to the current directory
}
torrent_path = ‘path/to/my-torrent-file.torrent’
handle = lt.add_torrent_file(ses, torrent_path, params)

2. Use the `torrent_info` class to get information about the torrent file:

info = handle.get_torrent_info()
print(‘Name:’, info.name())
print(‘Number of files:’, info.num_files())
print(‘File sizes:’)
for file in info.files():
print(f’{file.path}: {file.size}’)

With this approach, you can programmatically get information about a torrent file using Python and the `libtorrent` library.

Note that `libtorrent` has changed its API in version 1.2.0 and later, so the code snippets above may need to be adapted to work with earlier or later versions of the library.

## To parse a magnet URI using libtorrent in Python

To parse a magnet URI using `libtorrent` in Python, you can use the `parse_magnet_uri` function. Here's an example:

import libtorrent as lt

magnet_uri = ‘magnet:?xt=urn:btih:a2df1e84f607ff7af6df4380’
params = {
‘save_path’: ‘.’, # download to the current directory
‘storage_mode’: lt.storage_mode_t(2), # use storage_mode_t(2) to create files in sparse mode
}
handle = lt.add_magnet_uri(ses, magnet_uri, params)

torrent_info = handle.torrent_file()
print(‘Name:’, torrent_info.name())
print(‘Number of files:’, torrent_info.num_files())
print(‘File sizes:’)
for file in torrent_info.files():
print(f’{file.path}: {file.size}’)

With this approach, you can parse a magnet URI and get information about the torrent file using Python and the `libtorrent` library.

Note that you need to initialize a `session` object and add the magnet URI using the `add_magnet_uri` function before you can get information about the torrent file.