(overview_python_handbook_py_cpp_function)=
# Use a C++ function interactively

This section describes how to use a C++ function within the python framework. The idea is that every 
of our surrogate model discussed later-on on can be exported in C++ and so they can be used either 
throughout the {{uranie}} classes (for instance to evaluate a set of new points) or, for single 
evaluation, in either C++ or python. This macro will focus on the latter part. This macro is also 
detailled [](#use_cases_howto_py_function_py).

{{
    "```{literalinclude} " + parent_dir 
    + "/roottest/uranie/doc/overview/use_cases/python/howtoLoadFunction.py\n"
    + ":language: python\n"
    + ":lines: 1-5,11-24\n"
    + "```"
}}

The macro shown above, is an example of how to load a function and use it in a single-point 
estimation. Its result is discussed in [](#use_cases_howto_py_function_py).