Add clean script

clean.py

@@ -0,0 +1,21 @@
+import shelve
+
+db = shelve.open('t0txt')
+
+new = shelve.open('new')
+
+for k in db.keys():
+    try:
+        note = db[k]
+    except:
+        print('error', k)
+        continue
+
+    if not note and not isinstance(note, str):
+        print('bad', k)
+        continue
+
+    if k == 'HVQH':
+        continue
+    
+    new[k] = note