diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 846cece3761858..09f596101b4d1e 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -232,8 +232,24 @@ Fundamental data types
 +----------------------+------------------------------------------+----------------------------+
 | :class:`c_int`       | :c:expr:`int`                            | int                        |
 +----------------------+------------------------------------------+----------------------------+
+| :class:`c_int8`      | :c:type:`int8_t`                         | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_int16`     | :c:type:`int16_t`                        | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_int32`     | :c:type:`int32_t`                        | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_int64`     | :c:type:`int64_t`                        | int                        |
++----------------------+------------------------------------------+----------------------------+
 | :class:`c_uint`      | :c:expr:`unsigned int`                   | int                        |
 +----------------------+------------------------------------------+----------------------------+
+| :class:`c_uint8`     | :c:type:`uint8_t`                        | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_uint16`    | :c:type:`uint16_t`                       | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_uint32`    | :c:type:`uint32_t`                       | int                        |
++----------------------+------------------------------------------+----------------------------+
+| :class:`c_uint64`    | :c:type:`uint64_t`                       | int                        |
++----------------------+------------------------------------------+----------------------------+
 | :class:`c_long`      | :c:expr:`long`                           | int                        |
 +----------------------+------------------------------------------+----------------------------+
 | :class:`c_ulong`     | :c:expr:`unsigned long`                  | int                        |
@@ -2524,7 +2540,7 @@ These are the fundamental ctypes data types:
 
 .. class:: c_int8
 
-   Represents the C 8-bit :c:expr:`signed int` datatype.  Usually an alias for
+   Represents the C 8-bit :c:expr:`signed int` datatype.  It is an alias for
    :class:`c_byte`.
 
 
@@ -2599,7 +2615,7 @@ These are the fundamental ctypes data types:
 
 .. class:: c_uint8
 
-   Represents the C 8-bit :c:expr:`unsigned int` datatype.  Usually an alias for
+   Represents the C 8-bit :c:expr:`unsigned int` datatype.  It is an alias for
    :class:`c_ubyte`.
 
 
diff --git a/Doc/library/fnmatch.rst b/Doc/library/fnmatch.rst
index 12e61bc36f5db0..ee654b7a83e203 100644
--- a/Doc/library/fnmatch.rst
+++ b/Doc/library/fnmatch.rst
@@ -53,7 +53,7 @@ a :class:`!str` filename, and vice-versa.
 
 Finally, note that :func:`functools.lru_cache` with a *maxsize* of 32768
 is used to cache the (typed) compiled regex patterns in the following
-functions: :func:`fnmatch`, :func:`fnmatchcase`, :func:`.filter`.
+functions: :func:`fnmatch`, :func:`fnmatchcase`, :func:`.filter`, :func:`.filterfalse`.
 
 
 .. function:: fnmatch(name, pat)
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 00925ae920aad9..aa46920d3526f0 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -47,7 +47,7 @@ Iterator            Arguments               Results
 Iterator                        Arguments                       Results                                             Example
 ============================    ============================    =================================================   =============================================================
 :func:`accumulate`              p [,func]                       p0, p0+p1, p0+p1+p2, ...                            ``accumulate([1,2,3,4,5]) → 1 3 6 10 15``
-:func:`batched`                 p, n                            (p0, p1, ..., p_n-1), ...                           ``batched('ABCDEFG', n=3) → ABC DEF G``
+:func:`batched`                 p, n                            (p0, p1, ..., p_n-1), ...                           ``batched('ABCDEFG', n=2) → AB CD EF G``
 :func:`chain`                   p, q, ...                       p0, p1, ... plast, q0, q1, ...                      ``chain('ABC', 'DEF') → A B C D E F``
 :func:`chain.from_iterable`     iterable                        p0, p1, ... plast, q0, q1, ...                      ``chain.from_iterable(['ABC', 'DEF']) → A B C D E F``
 :func:`compress`                data, selectors                 (d[0] if s[0]), (d[1] if s[1]), ...                 ``compress('ABCDEF', [1,0,1,0,1,1]) → A C E F``
@@ -181,7 +181,7 @@ loops that truncate the stream.
    Roughly equivalent to::
 
       def batched(iterable, n, *, strict=False):
-          # batched('ABCDEFG', 3) → ABC DEF G
+          # batched('ABCDEFG', 2) → AB CD EF G
           if n < 1:
               raise ValueError('n must be at least one')
           iterator = iter(iterable)
diff --git a/Lib/test/test_ast/test_ast.py b/Lib/test/test_ast/test_ast.py
index 38d3a5adc5f01f..3f55ff44ba75c2 100644
--- a/Lib/test/test_ast/test_ast.py
+++ b/Lib/test/test_ast/test_ast.py
@@ -3545,7 +3545,7 @@ def test_show_empty_flag(self):
         self.check_output(source, expect, '--show-empty')
 
 
-class ASTOptimiziationTests(unittest.TestCase):
+class ASTOptimizationTests(unittest.TestCase):
     def wrap_expr(self, expr):
         return ast.Module(body=[ast.Expr(value=expr)])
 
diff --git a/Modules/_ctypes/stgdict.c b/Modules/_ctypes/stgdict.c
index f208d2956e429e..ab955a0b824a2f 100644
--- a/Modules/_ctypes/stgdict.c
+++ b/Modules/_ctypes/stgdict.c
@@ -484,7 +484,7 @@ error:;
 
 /*
   Replace array elements at stginfo->ffi_type_pointer.elements.
-  Return -1 if error occured.
+  Return -1 if error occurred.
 */
 int
 _replace_array_elements(ctypes_state *st, PyObject *layout_fields,
diff --git a/Modules/_interpretersmodule.c b/Modules/_interpretersmodule.c
index e7feaa7f186aee..9426ce72733c28 100644
--- a/Modules/_interpretersmodule.c
+++ b/Modules/_interpretersmodule.c
@@ -666,7 +666,7 @@ _run_in_interpreter(PyThreadState *tstate, PyInterpreterState *interp,
 
     // Prep and switch interpreters.
     if (_PyXI_Enter(session, interp, shareables, &result) < 0) {
-        // If an error occured at this step, it means that interp
+        // If an error occurred at this step, it means that interp
         // was not prepared and switched.
         _PyXI_FreeSession(session);
         _PyXI_FreeFailure(failure);
diff --git a/Tools/peg_generator/pegen/parser_generator.py b/Tools/peg_generator/pegen/parser_generator.py
index 52ae743c26b6b8..7dd56f98a652cc 100644
--- a/Tools/peg_generator/pegen/parser_generator.py
+++ b/Tools/peg_generator/pegen/parser_generator.py
@@ -56,7 +56,7 @@ def visit_NamedItem(self, item: NamedItem) -> None:
 
 
 class KeywordCollectorVisitor(GrammarVisitor):
-    """Visitor that collects all the keywods and soft keywords in the Grammar"""
+    """Visitor that collects all the keywords and soft keywords in the Grammar"""
 
     def __init__(self, gen: "ParserGenerator", keywords: Dict[str, int], soft_keywords: Set[str]):
         self.generator = gen