Merge pull request #13229 from achillesrasquinha/py3

fixed tabs
diff --git a/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py b/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
index 626774b..c715b1b 100755
--- a/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
+++ b/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
@@ -334,4 +334,4 @@
 		{"start": start, "end": end}, as_dict=True, update={"allDay": 0})
 	for item in data:
 		item.end = item.start + datetime.timedelta(minutes = item.duration)
-	return data
+	return data
\ No newline at end of file