Script to automatically clone gitlab projects. It will create a folder structure in --dir similar to the group tree in gitlab.

gitlab_clone.py

import argparse
import gitlab
import os
import subprocess
import getpass

# parse args
parser = argparse.ArgumentParser(description='Gitlab Clone Tree 🌲')
parser.add_argument('-U', '--url', required=False, default='https://gitlab.com/', help='gitlab url')
parser.add_argument('-P', '--prefix', required=True, help='ssh gitlab prefix')
parser.add_argument('-D', '--dir', required=True, help='target directory')
args = parser.parse_args()

# prompt secret
private_token = getpass.getpass('\nGitlab token?> ')

# init gitlab api
gl = gitlab.Gitlab(args.url, private_token=private_token)

# get projects
projects = gl.projects.list(owned=True, all=True)

# loop projects
for project in projects:
    if project.ssh_url_to_repo.startswith(args.prefix):

        # remote origin
        ssh_url_to_repo = project.ssh_url_to_repo

        # compose path
        tokens = ssh_url_to_repo.split('/')
        project_directory = '{}/{}'.format(args.dir, '/'.join(tokens[1:])[:-4])

        # clone repository
        if not os.path.exists(project_directory):
            os.makedirs(project_directory, exist_ok=True)
            subprocess.call(['git', 'clone', '--recursive', ssh_url_to_repo, project_directory])

$ python gitlab_clone.py ...
gitlab_clone.py: error: argument -D/--dir is required

Thanks @miguelaferreira, have updated the instructions