pybee python ios

https://github.com/pybee/Python-Apple-support

#import "Python/Python.h"

http://stackoverflow.com/questions/9749260/python-for-ios-interpreter

A little trip to Ubuntu 16.04
Install Python 3.5

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sudo apt-get install python3 python3-dev

helloworld.c

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#include <Python.h>

int
main(int argc, char *argv[])
{
    wchar_t *program = Py_DecodeLocale(argv[0], NULL);
    if (program == NULL) {
        fprintf(stderr, "Fatal error: cannot decode argv[0]\n");
        exit(1);
    }
    Py_SetProgramName(program);  /* optional but recommended */
    Py_Initialize();
    PyRun_SimpleString("from time import time,ctime\n"
                       "print('Today is', ctime(time()))\n");
    Py_Finalize();
    PyMem_RawFree(program);
    return 0;
}

build

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gcc -c hellowworld.c
gcc helloworld.o $(/usr/bin/python3.5-config --ldflags)

Calling Python from C and fetching return values

Python: sample.py

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# Returns the sum of two numbers.
def add(a, b):
 return a+b

sample.c

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#include <python3.5/Python.h>
#include <stdio.h>

int main(int argc, char* argv[])

{
 char localPath[40] = "\/home\/XXX\/XXX\/";

 printf("Calling Python to find the sum of 2 and 2.\n");

 // Initialize the Python interpreter.
 Py_Initialize();

 // Create some Python objects that will later be assigned values.
 PyObject *pName, *pModule, *pDict, *pFunc, *pArgs, *pValue;

 // Convert the file name to a Python string.
 pName = PyUnicode_FromString("sample");

 PyObject *sys_path = PySys_GetObject("path");
 PyList_Append(sys_path, PyUnicode_FromString(localPath));

 // Import the file as a Python module.
 pModule = PyImport_Import(pName);

 // Create a dictionary for the contents of the module.
 pDict = PyModule_GetDict(pModule);

 // Get the add method from the dictionary.
 pFunc = PyDict_GetItemString(pDict, "add");

 // Create a Python tuple to hold the arguments to the method.
 pArgs = PyTuple_New(2);

 // Convert 2 to a Python integer.
 pValue = PyLong_FromLong(2);

 // Set the Python int as the first and second arguments to the method.
 PyTuple_SetItem(pArgs, 0, pValue); 
 PyTuple_SetItem(pArgs, 1, pValue); 

 // Call the function with the arguments.
 PyObject* pResult = PyObject_CallObject(pFunc, pArgs);

 // Print a message if calling the method failed.
 if(pResult == NULL) printf("Calling the add method failed.\n");

 // Convert the result to a long from a Python object.
 long result = PyLong_AsLong(pResult);

 // Destroy the Python interpreter.
 Py_Finalize();

 // Print the result.
 printf("The result is %d.\n", result);
 //std::cin.ignore();

 return 0;
}

Objective-C

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- (void)helloWorld
{
    printf("Calling Python to find the sum of 2 and 2.\n");
    
    NSString *resourcePath = [[NSBundle mainBundle] resourcePath];
    PyObject *sys_path = PySys_GetObject("path");
    PyList_Append(sys_path, PyUnicode_FromString([resourcePath UTF8String]));

    // Special environment to avoid writing bytecode because
    // the process will not have write attribute on the device.
    putenv("PYTHONDONTWRITEBYTECODE=1");
    
    NSString *python_home = [NSString stringWithFormat:@"%@/Library/Python.framework/Resources", resourcePath, nil];
    NSLog(@"PythonHome is: %@", python_home);
    wchar_t *wpython_home = Py_DecodeLocale([python_home UTF8String], NULL);
    Py_SetPythonHome(wpython_home);
    
    // iOS provides a specific directory for temp files.
    NSString *tmp_path = [NSString stringWithFormat:@"TMP=%@/tmp", resourcePath, nil];
    putenv((char *)[tmp_path UTF8String]);
    
    // Initialize the Python interpreter.
    Py_Initialize();
    
    // Create some Python objects that will later be assigned values.
    PyObject *pName, *pModule, *pDict, *pFunc, *pArgs, *pValue;
    
    // Convert the file name to a Python string.
    pName = PyUnicode_FromString("sample");
    
    // Import the file as a Python module.
    pModule = PyImport_Import(pName);
    
    // Create a dictionary for the contents of the module.
    pDict = PyModule_GetDict(pModule);
    
    // Get the add method from the dictionary.
    pFunc = PyDict_GetItemString(pDict, "add");
    
    // Create a Python tuple to hold the arguments to the method.
    pArgs = PyTuple_New(2);
    
    // Convert 2 to a Python integer.
    pValue = PyLong_FromLong(2);
    
    // Set the Python int as the first and second arguments to the method.
    PyTuple_SetItem(pArgs, 0, pValue);
    PyTuple_SetItem(pArgs, 1, pValue);
    
    // Call the function with the arguments.
    PyObject* pResult = PyObject_CallObject(pFunc, pArgs);
    
    // Print a message if calling the method failed.
    if(pResult == NULL) printf("Calling the add method failed.\n");
    
    // Convert the result to a long from a Python object.
    long result = PyLong_AsLong(pResult);
    
    // Destroy the Python interpreter.
    Py_Finalize();
    
    // Print the result.
    printf("The result is %d.\n", result);
}