Issue #5341: Fix a variety of spelling errors.
diff --git a/Objects/abstract.c b/Objects/abstract.c
index ee744de..c67581e 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -2258,7 +2258,7 @@
/* Iterate over seq. Result depends on the operation:
PY_ITERSEARCH_COUNT: -1 if error, else # of times obj appears in seq.
- PY_ITERSEARCH_INDEX: 0-based index of first occurence of obj in seq;
+ PY_ITERSEARCH_INDEX: 0-based index of first occurrence of obj in seq;
set ValueError and return -1 if none found; also return -1 on error.
Py_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on error.
*/