Replace tabs by spaces

Author: mherrmann

src/15 PyQt database example/main.py

@@ -5,8 +5,8 @@
 import sys
 
 if not exists("projects.db"):
-	print("File projects.db does not exist. Please run initdb.py.")
-	sys.exit()
+    print("File projects.db does not exist. Please run initdb.py.")
+    sys.exit()
 
 app = QApplication([])
 db = QSqlDatabase.addDatabase("QSQLITE")