From 745caf911a0e6b8019efae0a63ea7f489228848c Mon Sep 17 00:00:00 2001
From: Ankush Menat <ankush@frappe.io>
Date: Sun, 19 Dec 2021 19:08:09 +0530
Subject: [PATCH] perf: specify slots on FIFO queue

---
 erpnext/stock/valuation.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/erpnext/stock/valuation.py b/erpnext/stock/valuation.py
index 7f54facda8b..48efde64d24 100644
--- a/erpnext/stock/valuation.py
+++ b/erpnext/stock/valuation.py
@@ -20,6 +20,10 @@ class FifoValuation:
 	ref: https://en.wikipedia.org/wiki/FIFO_and_LIFO_accounting
 	"""
 
+	# specifying the attributes to save resources
+	# ref: https://docs.python.org/3/reference/datamodel.html#slots
+	__slots__ = ["queue",]
+
 	def __init__(self, state: Optional[List[FifoBin]]):
 		self.queue: List[FifoBin] = state if state is not None else []