[Rpm-maint] [rpm-software-management/rpm] Add real-life examples of Python RPM (PR #3177)

[Panu Matilainen]

@pmatilai commented on this pull request.



> @@ -0,0 +1,11 @@
+#!/usr/bin/python3
+
+# Query all installed packages.
+# A Python equivalent for `rpm -qa`
+
+import rpm
+
+ts = rpm.TransactionSet()
+mi = ts.dbMatch()
+for hdr in mi:

Similar issues exist with the 'ts' handle of course - doesn't matter at all in such small examples but people commonly don't realize that the 'ts' handle will also keep the database open for much longer than intended.

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