style: format code with black
diff --git a/erpnext/regional/saudi_arabia/utils.py b/erpnext/regional/saudi_arabia/utils.py
index 515862d..b47adc9 100644
--- a/erpnext/regional/saudi_arabia/utils.py
+++ b/erpnext/regional/saudi_arabia/utils.py
@@ -13,21 +13,25 @@
 
 def create_qr_code(doc, method=None):
 	region = get_region(doc.company)
-	if region not in ['Saudi Arabia']:
+	if region not in ["Saudi Arabia"]:
 		return
 
 	# if QR Code field not present, create it. Invoices without QR are invalid as per law.
-	if not hasattr(doc, 'ksa_einv_qr'):
-		create_custom_fields({
-			doc.doctype: [
-				dict(
-					fieldname='ksa_einv_qr',
-					label='KSA E-Invoicing QR',
-					fieldtype='Attach Image',
-					read_only=1, no_copy=1, hidden=1
-				)
-			]
-		})
+	if not hasattr(doc, "ksa_einv_qr"):
+		create_custom_fields(
+			{
+				doc.doctype: [
+					dict(
+						fieldname="ksa_einv_qr",
+						label="KSA E-Invoicing QR",
+						fieldtype="Attach Image",
+						read_only=1,
+						no_copy=1,
+						hidden=1,
+					)
+				]
+			}
+		)
 
 	# Don't create QR Code if it already exists
 	qr_code = doc.get("ksa_einv_qr")
@@ -37,129 +41,129 @@
 	meta = frappe.get_meta(doc.doctype)
 
 	if "ksa_einv_qr" in [d.fieldname for d in meta.get_image_fields()]:
-		''' TLV conversion for
+		"""TLV conversion for
 		1. Seller's Name
 		2. VAT Number
 		3. Time Stamp
 		4. Invoice Amount
 		5. VAT Amount
-		'''
+		"""
 		tlv_array = []
 		# Sellers Name
 
-		seller_name = frappe.db.get_value(
-			'Company',
-			doc.company,
-			'company_name_in_arabic')
+		seller_name = frappe.db.get_value("Company", doc.company, "company_name_in_arabic")
 
 		if not seller_name:
-			frappe.throw(_('Arabic name missing for {} in the company document').format(doc.company))
+			frappe.throw(_("Arabic name missing for {} in the company document").format(doc.company))
 
 		tag = bytes([1]).hex()
-		length = bytes([len(seller_name.encode('utf-8'))]).hex()
-		value = seller_name.encode('utf-8').hex()
-		tlv_array.append(''.join([tag, length, value]))
+		length = bytes([len(seller_name.encode("utf-8"))]).hex()
+		value = seller_name.encode("utf-8").hex()
+		tlv_array.append("".join([tag, length, value]))
 
 		# VAT Number
-		tax_id = frappe.db.get_value('Company', doc.company, 'tax_id')
+		tax_id = frappe.db.get_value("Company", doc.company, "tax_id")
 		if not tax_id:
-			frappe.throw(_('Tax ID missing for {} in the company document').format(doc.company))
+			frappe.throw(_("Tax ID missing for {} in the company document").format(doc.company))
 
 		tag = bytes([2]).hex()
 		length = bytes([len(tax_id)]).hex()
-		value = tax_id.encode('utf-8').hex()
-		tlv_array.append(''.join([tag, length, value]))
+		value = tax_id.encode("utf-8").hex()
+		tlv_array.append("".join([tag, length, value]))
 
 		# Time Stamp
 		posting_date = getdate(doc.posting_date)
 		time = get_time(doc.posting_time)
 		seconds = time.hour * 60 * 60 + time.minute * 60 + time.second
 		time_stamp = add_to_date(posting_date, seconds=seconds)
-		time_stamp = time_stamp.strftime('%Y-%m-%dT%H:%M:%SZ')
+		time_stamp = time_stamp.strftime("%Y-%m-%dT%H:%M:%SZ")
 
 		tag = bytes([3]).hex()
 		length = bytes([len(time_stamp)]).hex()
-		value = time_stamp.encode('utf-8').hex()
-		tlv_array.append(''.join([tag, length, value]))
+		value = time_stamp.encode("utf-8").hex()
+		tlv_array.append("".join([tag, length, value]))
 
 		# Invoice Amount
 		invoice_amount = str(doc.grand_total)
 		tag = bytes([4]).hex()
 		length = bytes([len(invoice_amount)]).hex()
-		value = invoice_amount.encode('utf-8').hex()
-		tlv_array.append(''.join([tag, length, value]))
+		value = invoice_amount.encode("utf-8").hex()
+		tlv_array.append("".join([tag, length, value]))
 
 		# VAT Amount
 		vat_amount = str(get_vat_amount(doc))
 
 		tag = bytes([5]).hex()
 		length = bytes([len(vat_amount)]).hex()
-		value = vat_amount.encode('utf-8').hex()
-		tlv_array.append(''.join([tag, length, value]))
+		value = vat_amount.encode("utf-8").hex()
+		tlv_array.append("".join([tag, length, value]))
 
 		# Joining bytes into one
-		tlv_buff = ''.join(tlv_array)
+		tlv_buff = "".join(tlv_array)
 
 		# base64 conversion for QR Code
 		base64_string = b64encode(bytes.fromhex(tlv_buff)).decode()
 
 		qr_image = io.BytesIO()
-		url = qr_create(base64_string, error='L')
+		url = qr_create(base64_string, error="L")
 		url.png(qr_image, scale=2, quiet_zone=1)
 
 		name = frappe.generate_hash(doc.name, 5)
 
 		# making file
 		filename = f"QRCode-{name}.png".replace(os.path.sep, "__")
-		_file = frappe.get_doc({
-			"doctype": "File",
-			"file_name": filename,
-			"is_private": 0,
-			"content": qr_image.getvalue(),
-			"attached_to_doctype": doc.get("doctype"),
-			"attached_to_name": doc.get("name"),
-			"attached_to_field": "ksa_einv_qr"
-		})
+		_file = frappe.get_doc(
+			{
+				"doctype": "File",
+				"file_name": filename,
+				"is_private": 0,
+				"content": qr_image.getvalue(),
+				"attached_to_doctype": doc.get("doctype"),
+				"attached_to_name": doc.get("name"),
+				"attached_to_field": "ksa_einv_qr",
+			}
+		)
 
 		_file.save()
 
 		# assigning to document
-		doc.db_set('ksa_einv_qr', _file.file_url)
+		doc.db_set("ksa_einv_qr", _file.file_url)
 		doc.notify_update()
 
+
 def get_vat_amount(doc):
-	vat_settings = frappe.db.get_value('KSA VAT Setting', {'company': doc.company})
+	vat_settings = frappe.db.get_value("KSA VAT Setting", {"company": doc.company})
 	vat_accounts = []
 	vat_amount = 0
 
 	if vat_settings:
-		vat_settings_doc = frappe.get_cached_doc('KSA VAT Setting', vat_settings)
+		vat_settings_doc = frappe.get_cached_doc("KSA VAT Setting", vat_settings)
 
-		for row in vat_settings_doc.get('ksa_vat_sales_accounts'):
+		for row in vat_settings_doc.get("ksa_vat_sales_accounts"):
 			vat_accounts.append(row.account)
 
-	for tax in doc.get('taxes'):
+	for tax in doc.get("taxes"):
 		if tax.account_head in vat_accounts:
 			vat_amount += tax.tax_amount
 
 	return vat_amount
 
+
 def delete_qr_code_file(doc, method=None):
 	region = get_region(doc.company)
-	if region not in ['Saudi Arabia']:
+	if region not in ["Saudi Arabia"]:
 		return
 
-	if hasattr(doc, 'ksa_einv_qr'):
-		if doc.get('ksa_einv_qr'):
-			file_doc = frappe.get_list('File', {
-				'file_url': doc.get('ksa_einv_qr')
-			})
+	if hasattr(doc, "ksa_einv_qr"):
+		if doc.get("ksa_einv_qr"):
+			file_doc = frappe.get_list("File", {"file_url": doc.get("ksa_einv_qr")})
 			if len(file_doc):
-				frappe.delete_doc('File', file_doc[0].name)
+				frappe.delete_doc("File", file_doc[0].name)
+
 
 def delete_vat_settings_for_company(doc, method=None):
-	if doc.country != 'Saudi Arabia':
+	if doc.country != "Saudi Arabia":
 		return
 
-	if frappe.db.exists('KSA VAT Setting', doc.name):
-		frappe.delete_doc('KSA VAT Setting', doc.name)
+	if frappe.db.exists("KSA VAT Setting", doc.name):
+		frappe.delete_doc("KSA VAT Setting", doc.name)