pocketpy/docs/quick-start/installation.md

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Download the pocketpy.h on our GitHub Release page. And #include it in your project.

Compile flags

To compile it with your project, these flags must be set:

• --std=c++17 flag must be set
• Exception must be enabled
• RTTI is not required

!!! For maximum performance, we recommend to use clang++ with -O2 flag. !!!

Example

#include "pocketpy.h"

using namespace pkpy;

int main(){
    // Create a virtual machine
    VM* vm = new VM();
    
    // Hello world!
    vm->exec("print('Hello world!')", "main.py", EXEC_MODE);

    // Create a list
    vm->exec("a = [1, 2, 3]", "main.py", EXEC_MODE);

    // Eval the sum of the list
    PyObject* result = vm->exec("sum(a)", "<eval>", EVAL_MODE);
    std::cout << CAST(int, result);   // 6
    return 0;
}

Overview

pkpy's C++ interfaces are organized in an object-oriented way. All classes are located in pkpy namespace.

The most important class is the VM class. A VM instance is a python virtual machine which holds all necessary runtime states, including callstacks, modules, variables, etc.

You need to use the C++ new operator to create a VM instance.

VM* vm = new VM();

The constructor can take 1 extra parameters.

VM(bool enable_os=true)

• enable_os, whether to enable OS-related features or not. This setting controls the availability of some priviledged modules such os io and os as well as builtin function open.

When you are done with the VM instance, you need to use the C++ delete operator to free the memory.

delete vm;