2012-06-30 124 views
2

我想在ios上運行一個python腳本。 我不想用Python編寫整個應用程序只是它的一小部分。在ios上運行一個簡單的python腳本

我試圖理解PyObjC,但它並不那麼容易。

你能舉個例子嗎?我想將以下方法的結果保存在NSString變量中。

def doSomething(): 
    someInfos = "test" 
    return someInfos 

回答

9

這是調用在myModule中定義的函數的示例。該equivient蟒蛇是:

import myModule 
pValue = myModule.doSomething() 
print pValue 

在Objective-C:

#include <Python.h> 

- (void)example { 

    PyObject *pName, *pModule, *pDict, *pFunc, *pArgs, *pValue; 
    NSString *nsString; 

    // Initialize the Python Interpreter 
    Py_Initialize(); 

    // Build the name object 
    pName = PyString_FromString("myModule"); 

    // Load the module object 
    pModule = PyImport_Import(pName); 

    // pDict is a borrowed reference 
    pDict = PyModule_GetDict(pModule); 

    // pFunc is also a borrowed reference 
    pFunc = PyDict_GetItemString(pDict, "doSomething"); 

    if (PyCallable_Check(pFunc)) { 
     pValue = PyObject_CallObject(pFunc, NULL); 
     if (pValue != NULL) { 
      if (PyObject_IsInstance(pValue, (PyObject *)&PyUnicode_Type)) { 
        nsString = [NSString stringWithCharacters:((PyUnicodeObject *)pValue)->str length:((PyUnicodeObject *) pValue)->length]; 
      } else if (PyObject_IsInstance(pValue, (PyObject *)&PyBytes_Type)) { 
        nsString = [NSString stringWithUTF8String:((PyBytesObject *)pValue)->ob_sval]; 
      } else { 
        /* Handle a return value that is neither a PyUnicode_Type nor a PyBytes_Type */ 
      } 
      Py_XDECREF(pValue); 
     } else { 
      PyErr_Print(); 
     } 
    } else { 
     PyErr_Print(); 
    } 

    // Clean up 
    Py_XDECREF(pModule); 
    Py_XDECREF(pName); 

    // Finish the Python Interpreter 
    Py_Finalize(); 

    NSLog(@"%@", nsString); 
} 

對於更多的文檔退房:Extending and Embedding the Python Interpreter