No output in Python console when using PyQGIS

Question

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

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

Answer 1

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.