A Python JetBrains License Server implemented within 43 lines of code.

https://github.com/BennyThink/pyJetBrains_license_server

root@ubuntu:~# python -m pip install --upgrade pip
Collecting pip
  Downloading https://files.pythonhosted.org/packages/0f/74/ecd13431bcc456ed390b44c8a6e917c1820365cbebcb6a8974d1cd045ab4/pip-10.0.1-py2.py3-none-any.whl (1.3MB)
    100% |████████████████████████████████| 1.3MB 875kB/s 
Installing collected packages: pip
  Found existing installation: pip 9.0.1
    Uninstalling pip-9.0.1:
      Successfully uninstalled pip-9.0.1
Successfully installed pip-10.0.1
root@ubuntu:~# pip install flask cryptography
Requirement already satisfied: flask in /usr/local/lib/python2.7/dist-packages (1.0.2)
Requirement already satisfied: cryptography in /usr/local/lib/python2.7/dist-packages (2.2.2)
Requirement already satisfied: click>=5.1 in /usr/local/lib/python2.7/dist-packages (from flask) (6.7)
Requirement already satisfied: Werkzeug>=0.14 in /usr/local/lib/python2.7/dist-packages (from flask) (0.14.1)
Requirement already satisfied: itsdangerous>=0.24 in /usr/local/lib/python2.7/dist-packages (from flask) (0.24)
Requirement already satisfied: Jinja2>=2.10 in /usr/local/lib/python2.7/dist-packages (from flask) (2.10)
Requirement already satisfied: six>=1.4.1 in /usr/local/lib/python2.7/dist-packages (from cryptography) (1.11.0)
Requirement already satisfied: cffi>=1.7; platform_python_implementation != "PyPy" in /usr/local/lib/python2.7/dist-packages (from cryptography) (1.11.5)
Requirement already satisfied: enum34; python_version < "3" in /usr/local/lib/python2.7/dist-packages (from cryptography) (1.1.6)
Requirement already satisfied: idna>=2.1 in /usr/local/lib/python2.7/dist-packages (from cryptography) (2.7)
Requirement already satisfied: asn1crypto>=0.21.0 in /usr/local/lib/python2.7/dist-packages (from cryptography) (0.24.0)
Requirement already satisfied: ipaddress; python_version < "3" in /usr/local/lib/python2.7/dist-packages (from cryptography) (1.0.22)
Requirement already satisfied: MarkupSafe>=0.23 in /usr/local/lib/python2.7/dist-packages (from Jinja2>=2.10->flask) (1.0)
Requirement already satisfied: pycparser in /usr/local/lib/python2.7/dist-packages (from cffi>=1.7; platform_python_implementation != "PyPy"->cryptography) (2.18)
root@ubuntu:~#