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When I run my code in QGIS Python console I get output, but when I run my code from normal console I didn't get any output.

Why does it work only in QGIS Python console?

import sys, os

sys.path.append(r'C:/PROGRA~1/QGIS3~1.16/apps/qgis/python/plugins')
os.environ['PROJ_LIB'] = 'C:\\Program Files\\QGIS 3.16\\share\\proj'

from qgis.core import *
from qgis.utils import *

qgispath = r'C:/PROGRA~1/QGIS3~1.16/apps/qgis'
 
QgsApplication.setPrefixPath(qgispath, True)
qgs = QgsApplication([], False)
qgs.initQgis()

path = r'C:/Users/ja/Inne/Desktop/POLSKA/PRG_PunktyAdresowe_POLSKA.shp' 
lyr = QgsVectorLayer (path, 'PRG_PunktyAdresowe_POLSKA', 'ogr')

for f in lyr.getFeatures():
    print(f.attributes())
    break

enter image description here

enter image description here

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6
  • On your second image I do not see break command. Can you try using it? – Taras Nov 2 '20 at 13:31
  • the same, didnt get any output.. – datasciencebegginer Nov 2 '20 at 13:33
  • What if you try print(lyr) before for-loop. What does it give you? – Taras Nov 2 '20 at 13:36
  • >>> print(lyr) <QgsMapLayer: 'PRG_PunktyAdresowe_POLSKA' (ogr)> – datasciencebegginer Nov 2 '20 at 13:39
  • Try print(lyr.featureCount()) before forloop. I think there are no entities or it can't read and iterate on your layer – Vincent Bré Nov 2 '20 at 13:42
4

In your last screenshot where we see the Python interpreter in an interactive session you have not actually started execution of the loop yet. Hit the Enter key one more time.

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