It's version 0.6 I add users DB

storage/users_storage.py

@@ -0,0 +1,33 @@
+from .DB import get_db
+
+def save_user(user_id: int, group: str = "30тс"):
+    db = get_db()
+    cur = db.cursor()
+    cur.execute("INSERT INTO users (user_id, user_group) VALUES (?, ?)", (user_id, group))
+    db.commit()
+    cur.close()
+    db.close()
+
+def set_group(user_id: int, group: str = "30тс"):
+    db = get_db()
+    cur = db.cursor()
+    cur.execute("UPDATE users SET user_group = ? WHERE user_id = ?", (group, user_id))
+    db.commit()
+    cur.close()
+    db.close()
+
+def get_group(user_id: int, default: str = "30тс") -> str:
+    db = get_db()
+    cur = db.cursor()
+    cur.execute("SELECT user_group FROM users WHERE user_id = ?", (user_id,))
+    row = cur.fetchone()
+    if row:
+        group = row[0]
+    else:
+        # если пользователя нет — регистрируем с дефолтной группой
+        cur.execute("INSERT INTO users (user_id, user_group) VALUES (?, ?)", (user_id, default))
+        db.commit()
+        group = default
+    cur.close()
+    db.close()
+    return group