Add multilingual language and systems learning tracks

en/expanded-28-1/lesson-2/main.py

@@ -0,0 +1,6 @@
+import sqlite3
+db=sqlite3.connect(":memory:")
+db.execute("create table notes(value text)")
+value="A student's note"
+db.execute("insert into notes values (?)",(value,))
+print(db.execute("select value from notes").fetchone()[0])