diff --git a/py/objdeque.c b/py/objdeque.c
index 2ad771284df53..22c380a05a926 100644
--- a/py/objdeque.c
+++ b/py/objdeque.c
@@ -208,7 +208,7 @@ static mp_obj_t deque_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
size_t offset = mp_get_index(self->base.type, deque_len(self), index, false);
size_t index_val = self->i_get + offset;
- if (index_val > self->alloc) {
+ if (index_val >= self->alloc) {
index_val -= self->alloc;
}
diff --git a/tests/basics/deque2.py b/tests/basics/deque2.py
index 3552d5be37abe..ebc0872c7b4e0 100644
--- a/tests/basics/deque2.py
+++ b/tests/basics/deque2.py
@@ -31,6 +31,16 @@
d[3] = 5
print(d[3])
+# Access the last element via index, when the last element is at various locations
+d = deque((), 2)
+for i in range(4):
+ d.append(i)
+ print(i, d[-1])
+
+# Write the last element then access all elements from the end
+d[-1] = 4
+print(d[-2], d[-1])
+
# Accessing indices out of bounds raises IndexError
try:
d[4]
pFad - Phonifier reborn
Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.
Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.
Alternative Proxies:
Alternative Proxy
pFad Proxy
pFad v3 Proxy
pFad v4 Proxy