diff --git a/eclass/python-utils-r1.eclass b/eclass/python-utils-r1.eclass
index 1a20a3cae994b..b435ebaa7ad63 100644
--- a/eclass/python-utils-r1.eclass
+++ b/eclass/python-utils-r1.eclass
@@ -1010,6 +1010,9 @@ _python_wrapper_setup() {
 #
 # Returns 0 (true) if it is, 1 (false) otherwise.
 python_is_python3() {
+	eqawarn "${FUNCNAME} is deprecated, as Python 2 is not supported anymore"
+	[[ ${EAPI} == [67] ]] || die "${FUNCNAME} banned in EAPI ${EAPI}"
+
 	local impl=${1:-${EPYTHON}}
 	[[ ${impl} ]] || die "python_is_python3: no impl nor EPYTHON"
 
diff --git a/eclass/tests/python-utils-r1.sh b/eclass/tests/python-utils-r1.sh
index 85a6a53654d36..63a94c90b715d 100755
--- a/eclass/tests/python-utils-r1.sh
+++ b/eclass/tests/python-utils-r1.sh
@@ -5,6 +5,10 @@
 EAPI=7
 source tests-common.sh
 
+eqawarn() {
+	: # stub
+}
+
 test_var() {
 	local var=${1}
 	local impl=${2}