write a csv file inside qgis

qgis_write_csv.py

from PyQt4.QtCore import QVariant
from qgis.core import QGis
from qgis.core import QgsVectorFileWriter, QgsVectorLayer, QgsFields, QgsField, QgsCoordinateReferenceSystem, QgsApplication
from qgis.core import QgsFeature, QgsGeometry, QgsPoint, QgsField
import tempfile
import os

QgsApplication.setPrefixPath("/usr", True)
QgsApplication.initQgis()

fields = QgsFields()
fields.append(QgsField("test", QVariant.Int))

crs = QgsCoordinateReferenceSystem()
crs.createFromString("EPSG:4326")

encoding = "UTF-8"
#path = "/vsizip/{0}".format(os.path.join(tempfile.gettempdir(), "test.zip"))
path = os.path.join(tempfile.gettempdir(), "test.csv")
writer = QgsVectorFileWriter(
    path,
    encoding,
    fields,
    QGis.WKBPoint,
    crs,
    'CSV',
    [],
    ["CREATE_CSVT=YES", "WRITE_BOM=YES", "SEPARATOR=SEMICOLON", "GEOMETRY=AS_WKT"]
)

feature = QgsFeature(fields, 1)
feature.setGeometry(
    QgsGeometry.fromPoint(QgsPoint(13, 52))
)
feature.setAttribute('test', 10)
writer.addFeature(feature)
print path