[6.0.x] Refs #36810 -- Avoided infinite recursion in LazyNonce.__repr__().

Moved nonce generation in ``django.utils.csp.LazyNonce`` to a function
to avoid infinite recursion in ``SimpleLazyObject.__repr__`` for
unevaluated instances.

Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>

Backport of 165c3599965e63f88649a46fcc2ff681c52f2f66 from main.

1 files changed, 5 insertions, 4 deletions

diff --git a/django/utils/csp.py b/django/utils/csp.py
index d57fc98995..08a9d0752e 100644
--- a/django/utils/csp.py
+++ b/django/utils/csp.py
@@ -71,15 +71,16 @@ class LazyNonce(SimpleLazyObject):
     """
 
     def __init__(self):
-        super().__init__(self._generate)
-
-    def _generate(self):
-        return secrets.token_urlsafe(16)
+        super().__init__(generate_nonce)
 
     def __bool__(self):
         return self._wrapped is not empty
 
 
+def generate_nonce():
+    return secrets.token_urlsafe(16)
+
+
 def build_policy(config, nonce=None):
     policy = []