Update sqlite3-python/README.md

sqlite3-python/README.md

@@ -13,17 +13,16 @@ sql("SELECT * FROM sqlite_master WHERE type = 'table'")
 def SQL():
     from sqlite3 import connect, Row
     (con := connect('.db.sql', isolation_level=None)).row_factory = Row
-    sql = type('', (), dict(
+    con.execute('PRAGMA journal_mode=wal')
+    con.execute('PRAGMA busy_timeout='f'{1e9}')
+    con.execute('CREATE TABLE IF NOT EXISTS kv(k PRIMARY KEY, v)')
+    return (sql := type('', (), dict(
         __call__=lambda _, q, *p: list(map(dict, con.execute(q, p))),
         __iter__=lambda sql: (kv.values() for kv in sql('SELECT * FROM kv')),
         __getitem__=lambda sql, k: sql('SELECT v FROM kv WHERE k=?', k)[0]['v'],
         __setitem__=lambda sql, k, v: 
             sql('INSERT or REPLACE INTO kv VALUES(?,?)', k, v),
-    ))()
-    sql('PRAGMA journal_mode=wal')
-    sql('PRAGMA busy_timeout='f'{1e9}')
-    sql('CREATE TABLE IF NOT EXISTS kv(k PRIMARY KEY, v)')
-    return sql
+    ))())
 sql = SQL()
 ```