refactor: simplify conditional logic
Command: `sourcery review --fix --enable de-morgan .`
diff --git a/erpnext/accounts/party.py b/erpnext/accounts/party.py
index 1efe35c..008614e 100644
--- a/erpnext/accounts/party.py
+++ b/erpnext/accounts/party.py
@@ -775,7 +775,7 @@
frozen_accounts_modifier = frappe.db.get_single_value(
"Accounts Settings", "frozen_accounts_modifier"
)
- if not frozen_accounts_modifier in frappe.get_roles():
+ if frozen_accounts_modifier not in frappe.get_roles():
frappe.throw(_("{0} {1} is frozen").format(party_type, party_name), PartyFrozen)
elif party_type == "Employee":