PyScripter crashes at “import processing”

Question

I set up PyScripter latest version, 2.7) to work with QGIS (2.2, OSGeo4W install) following http://chelahmy.blogspot.ca/2011/02/setting-up-pyscripter-for-quantum-gis.html. It generally works well. I'm running Windows 7.

Here's my code:

import sys
import os
sys.path.append("C:\\OSGeo4W\\apps\\qgis\\python")
sys.path.append("C:\\OSGeo4W\\apps\\qgis\\python\\plugins")
from qgis.core import *
from qgis.utils import *
from qgis.gui import *
from PyQt4 import *
from PyQt4.QtCore import *
from PyQt4.QtGui import *

from processing.core.Processing import Processing

I need the sys.path.append to import qgis properly (rather than setting them in the PYTHONPATH). However, when I run the line

from processing.core.Processing import Processing

PyScripter simply shuts down, no error message, window just closes. Has anybody else experienced this? Same thing happens with other imports, like

import processing

I can import all the other plugin libraries (GdalTools, fTools, db_manager) with no problems - but I don't need those, I need the proceesing library to access all the nice OTB tools.

Answer 1

I had the same problem. I fixed it by running a few lines of code before "import processing".

First I created an (unused) application object. "processing" won't work without it and pyscripter will crash.

app = QgsApplication([], True)

Then I "manually" initialized Processing.

from processing.core.Processing import Processing
Processing.initialize()

Not only did the absence of these last two lines cause pyscripter to crash, but I couldn't access the processing algorithms in any environment (not just pyscripter) without them.