make PDeque generic covariant

tobgu · Oct 16, 2023 · 3ee2f01 · 3ee2f01
1 parent 225f8ae
commit 3ee2f01
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/pyrsistent/_pdeque.py b/pyrsistent/_pdeque.py
@@ -4,10 +4,10 @@
 from typing import TypeVar, Generic
 from pyrsistent._plist import plist
 
-T = TypeVar("T")
+T_co = TypeVar("T_co", covariant=True)
 
 
-class PDeque(Generic[T]):
+class PDeque(Generic[T_co]):
     """
     Persistent double ended queue (deque). Allows quick appends and pops in both ends. Implemented
     using two persistent lists.