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QuestionEmbedding Python in C++ Pin
Member 1312483628-Apr-17 17:06
Member 1312483628-Apr-17 17:06 
I have tried using Selenium with both the PythonQt and the Python.h libraries. I have a Ubuntu 16.04 platform using QT Creator 4.2.2 with Qt5.8.0. I can get everything setup with either interpreter and call a simple Python class for strings from Qt. However when I try and use Selenium I end up having problems (running py script for Selenium from the prompt works fine). For instance, using python.h When PyObject_GetAttrString(pModule, "browser") is called I get a segmentation fault. I am assuming that I need to load the selenium module or set the python path to it in Qt, but I am not clear on how to do this with multiple modules/paths. This is my python code browser.py:

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

class browser():
  def __init__(self):
    self.driver = None
    self.webelement = None
  def getbrowser(self, name):
    if name == "chrome":
      self.driver = webdriver.Chrome()
    elif name == "firefox":
      self.driver = webdriver.Firefox()    
  def getpage(self,page):
    self.driver.get(page)
  def getsearchelement(self,elementname):
    self.webelement = self.driver.find_element_by_name(elementname)
  def getsearch(self,search):
    self.webelement.send_keys(search + Keys.RETURN)
  def stopbrowser(self):
    self.driver.quit()
    
""" Following runs fine from prompt, crashes in PythonQt/python.h
browser = webdriver.Firefox()
browser.get('https:\\search.yahoo.com')
elem = browser.find_element_by_name('p')  # Find the search box
elem.send_keys('seleniumhq' + Keys.RETURN)
browser.quit()
"""


Here is the routine from my c++ code

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{

    ui->setupUi(this);

    // Doing it here for debugging
    PyObject *pName, *pModule, *pFuncSet, *pValue, *pClass, *pInst, *pArgs;
    PyObject *pGetBrowser, *pGetPage, *pGetSearchElement, *pGetSearch, *pStopBrowser;
    // Initialize the Python Interpreter
    Py_Initialize();
    PySys_SetPath("/home/user/CppCode/StocksWeb/src/");
    // Build the name object
    pName = PyString_FromString("browser");
    // Load the module object
    pModule = PyImport_ImportModule("browser");
    pClass = PyObject_GetAttrString(pModule, "browser");
    if(pClass != NULL && pModule != NULL ) {
        pArgs  = Py_BuildValue("(  )");
        pInst = PyEval_CallObject(pClass, pArgs);
        if ( pInst != NULL ) {
            pGetBrowser = PyObject_GetAttrString(pInst, "getbrowser");
            pGetPage = PyObject_GetAttrString(pInst, "getpage");
            pGetSearchElement = PyObject_GetAttrString(pInst, "getsearchelement");
            pGetSearch = PyObject_GetAttrString(pInst, "getsearch");
            pStopBrowser = PyObject_GetAttrString(pInst, "stopbrowser");
            if( PyCallable_Check(pGetBrowser) && PyCallable_Check(pGetPage) && PyCallable_Check(pGetSearchElement) && \
                    PyCallable_Check(pGetSearch) && PyCallable_Check(pStopBrowser) ) {
                pArgs  = Py_BuildValue("(s)","firefox");
                PyObject_CallObject(pGetBrowser, pArgs);
                pArgs  = Py_BuildValue("(s)","https:\\search.yahoo.com");
                PyObject_CallObject(pGetPage, pArgs);
                pArgs  = Py_BuildValue("(s)","p");
                PyObject_CallObject(pGetSearchElement, pArgs);
                pArgs  = Py_BuildValue("(s)","seleniumhq");
                PyObject_CallObject(pGetSearch, pArgs);
                PyObject_CallObject(pStopBrowser, NULL);
            }
        }
    }
    // Clean up
    Py_DECREF(pModule);
    Py_DECREF(pName);

    // Finish the Python Interpreter
    Py_Finalize();
}


Any help would be greatly appreciated!

modified 28-Apr-17 23:16pm.

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Questionerror LNK2019: unresolved external symbol __stdio_common_vsprintf referenced in function sprint VS 2015 Pro Windows 10 Pin
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