$ git clone https://github.com/conan-io/conan.git
$ cd conan
$ pip install -r conans/requirements.txt

Next create a script and name it conan (without any .py extensions!). Put it to any directory in PATH environment variable

printenv PATH

or add any directory with script to PATH

Script content:

#!/usr/bin/env python3

import sys

conan_repo_path = "/home/your_user/conan" # ABSOLUTE PATH TO CONAN REPOSITORY FOLDER

sys.path.append(conan_repo_path)
from conans.client.command import main
main(sys.argv[1:])

Change script mode to be executable:

sudo chmod 755 /path_to_script/conan

Now you can use conan as is

$ conan