Refactored code; organized letter and word metrics

src/storage/__init__.py

@@ -0,0 +1,33 @@
+import os.path
+import sqlite3
+
+class Storage:
+    def __init__(self, dbFile):
+        self.__dbFile = dbFile
+        self.__initialize()
+        self.__con = None
+        self.__cur = None
+
+    def __initialize(self):
+        self._createDatabase()
+
+    def _createDatabase(self):
+        pass
+
+    def _destroyDatabase(self):
+        pass
+
+    def connect(self):
+        self.__con = sqlite3.connect(self.__dbFile)
+        self.__cur = self.__con.cursor()
+        return self.__cur
+
+    def commit(self, doClose=True):
+        self.__con.commit()
+        if doClose:
+            self.__cur.close()
+            self.__con.close()
+
+    def recreateDatabase(self):
+        self._destroyDatabase()
+        self._createDatabase()