From 9d851f46ea98a209f11044b6bafab2dec17ab53b Mon Sep 17 00:00:00 2001
From: Denis Laxalde <denis@laxalde.org>
Date: Thu, 1 Aug 2024 06:55:21 +0200
Subject: [PATCH] Avoid using deprecated "feasible" property (#631)

The "feasible" property of pymoo.core.individual.Individual got
deprecated in commit ad3ef6076a6bc7eed7c858c5776afadfb76fb5dd but was
still used internally, thus producing deprecation warnings in user code.
Use the FEAS property instead.
---
 pymoo/core/algorithm.py     | 2 +-
 pymoo/core/replacement.py   | 4 ++--
 pymoo/core/survival.py      | 2 +-
 pymoo/util/misc.py          | 2 +-
 pymoo/util/normalization.py | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/pymoo/core/algorithm.py b/pymoo/core/algorithm.py
index 09335e9b1..54e7694f4 100644
--- a/pymoo/core/algorithm.py
+++ b/pymoo/core/algorithm.py
@@ -261,7 +261,7 @@ def result(self):
             opt = None
 
         # if no feasible solution has been found
-        elif not np.any(opt.get("feasible")):
+        elif not np.any(opt.get("FEAS")):
             if self.return_least_infeasible:
                 opt = filter_optimum(opt, least_infeasible=True)
             else:
diff --git a/pymoo/core/replacement.py b/pymoo/core/replacement.py
index 10a569e69..933a3f2e6 100644
--- a/pymoo/core/replacement.py
+++ b/pymoo/core/replacement.py
@@ -59,8 +59,8 @@ def _do(self, problem, pop, off, **kwargs):
 
         ret = np.full((len(pop), 1), False)
 
-        pop_F, pop_CV, pop_feas = pop.get("F", "CV", "feasible")
-        off_F, off_CV, off_feas = off.get("F", "CV", "feasible")
+        pop_F, pop_CV, pop_feas = pop.get("F", "CV", "FEAS")
+        off_F, off_CV, off_feas = off.get("F", "CV", "FEAS")
 
         if problem.has_constraints() > 0:
 
diff --git a/pymoo/core/survival.py b/pymoo/core/survival.py
index ee95422aa..f078b97b9 100644
--- a/pymoo/core/survival.py
+++ b/pymoo/core/survival.py
@@ -86,7 +86,7 @@ def _do(self, problem, pop, off, **kwargs):
 
 
 def split_by_feasibility(pop, sort_infeas_by_cv=True, sort_feas_by_obj=False, return_pop=False):
-    F, CV, b = pop.get("F", "CV", "feasible")
+    F, CV, b = pop.get("F", "CV", "FEAS")
 
     feasible = np.where(b)[0]
     infeasible = np.where(~b)[0]
diff --git a/pymoo/util/misc.py b/pymoo/util/misc.py
index 392e718c2..480bd7378 100644
--- a/pymoo/util/misc.py
+++ b/pymoo/util/misc.py
@@ -360,7 +360,7 @@ def intersect(a, b):
 
 
 def has_feasible(pop):
-    return np.any(pop.get("feasible"))
+    return np.any(pop.get("FEAS"))
 
 
 def to_numpy(a):
diff --git a/pymoo/util/normalization.py b/pymoo/util/normalization.py
index ff5dc0b03..e0e60d188 100644
--- a/pymoo/util/normalization.py
+++ b/pymoo/util/normalization.py
@@ -305,7 +305,7 @@ def __init__(self) -> None:
         self._worst = None
 
     def update(self, pop):
-        F, feas = pop.get("F", "feasible")
+        F, feas = pop.get("F", "FEAS")
         self._infeas_ideal = find_ideal(F, current=self._infeas_ideal)
 
         if np.any(feas):