Downloads given number of beatmapsets with the most favorites from osu.ppy.sh into the current working directory.
You can install this program via pip:
pip install osu-beatmap-downloader
This will install the program in the global python package folder inside your python installation directory.
You can also install it into your python user directory with:
pip install --user osu-beatmap-downloader
These directories might not be in PATH. If you want to use this program from the command line, you may have to add the correct directories to PATH.
To use the downloader navigate to your osu! Songs directory (default is C:\<User>\AppData\Local\osu!\Songs\):
cd ~\AppData\Local\osu!\Songs\
Make sure you are in the correct directory since the downloader will save all the files in the current working directory.
Then start the dowloader with
osu-beatmap-downloader download
The program will ask for your osu! username and password because osu.ppy.sh won't let you download beatmaps without being logged in.
The program will then ask you if you want to save your credentials so that you don't have to enter them every time you want to start the program. They will be stored in %USERPROFILE%/.osu-beatmap-downloader/credentials.json on Windows and ~/.osu-beatmap-downloader/credentials.json on Linux/macOS. The credentials are saved in plaintext (yes, that includes your password!). If you want to delete the credential file you can run:
osu-beatmap-downloader credentials --delete
You can check if the credential file exists with:
osu-beatmap-downloader credentials --check
By default the program will download the top 200 beatmaps. You can change the limit with:
osu-beatmap-downloader download --limit 500
or
osu-beatmap-downloader download -l 500
You can also download the beatmaps without video files by adding:
osu-beatmap-downloader download -l 500 --no-video
or
osu-beatmap-downloader download -l 500 -nv
The programm will limit its rate to 30 files per minute to prevent unnecessary load on osu!s website. Despite this after a specific amount of songs (that I don't know) the website will prevent any further downloads. The program will terminate after 5 failed downloads. In this case you might have to wait for half an hour or even longer before you can download again.
Every step will be printed in your command line window and will also be logged in %USERPROFILE%/.osu-beatmap-downloader/downloader.log on Windows or ~/.osu-beatmap-downloader/downloader.log on Linux/macOS.