This library aims at embedding a Python interpreter into a Metatrader (http://www.metaquotes.com) script, expert advisor or custom indicator written using the MQL language. Py4MQL is build on top of the Boost.Python library and support Python versions from 2.7.x to 3.4.x. It targets the both the Metatrader 5 and the Metatrader 4 (for build 600 and higher) platforms.