Fix closes Issue12621 - Fix docstrings of find and rfind methods of bytes/bytearry/unicodeobject.
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 7a74104..0b45394 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -1102,7 +1102,7 @@
"B.find(sub[, start[, end]]) -> int\n\
\n\
Return the lowest index in B where subsection sub is found,\n\
-such that sub is contained within s[start,end]. Optional\n\
+such that sub is contained within B[start,end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
@@ -1172,7 +1172,7 @@
"B.rfind(sub[, start[, end]]) -> int\n\
\n\
Return the highest index in B where subsection sub is found,\n\
-such that sub is contained within s[start,end]. Optional\n\
+such that sub is contained within B[start,end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 38458ef..8e35fa9 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -1273,7 +1273,7 @@
"B.find(sub[, start[, end]]) -> int\n\
\n\
Return the lowest index in B where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within B[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
@@ -1312,7 +1312,7 @@
"B.rfind(sub[, start[, end]]) -> int\n\
\n\
Return the highest index in B where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within B[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 03807a4..75da0e7 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7587,7 +7587,7 @@
"S.find(sub[, start[, end]]) -> int\n\
\n\
Return the lowest index in S where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within S[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
@@ -8513,7 +8513,7 @@
"S.rfind(sub[, start[, end]]) -> int\n\
\n\
Return the highest index in S where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within S[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");