GH-98906 re module: search() vs. match() section should mention fullmatch()

Doc/library/re.rst

@@ -1565,21 +1565,27 @@ search() vs. match()
 
 .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
 
-Python offers two different primitive operations based on regular expressions:
-:func:`re.match` checks for a match only at the beginning of the string, while
-:func:`re.search` checks for a match anywhere in the string (this is what Perl
-does by default).
+Python offers different primitive operations based on regular expressions:
+
++ :func:`re.search` checks for a match anywhere in the string,
+  (this is what Perl does by default)
++ :func:`re.fullmatch` checks for entire string to be a match
++ :func:`re.match` checks for a match only at the beginning of the string
+
 
 For example::
 
-   >>> re.match("c", "abcdef")    # No match
-   >>> re.search("c", "abcdef")   # Match
-   <re.Match object; span=(2, 3), match='c'>
+   >>> re.match("c", "cdef")    # match
+   <re.Match object; span=(0, 1), match='c'>
+   >>> re.search("c", "cdef")   # Match
+   <re.Match object; span=(0, 1), match='c'>
+   >>> re.fullmatch("c", "cdef")  # No Match
 
 Regular expressions beginning with ``'^'`` can be used with :func:`search` to
 restrict the match at the beginning of the string::
 
    >>> re.match("c", "abcdef")    # No match
+   >>> re.fullmatch("c", "abcdef")  # No Match
    >>> re.search("^c", "abcdef")  # No match
    >>> re.search("^a", "abcdef")  # Match
    <re.Match object; span=(0, 1), match='a'>
@@ -1589,6 +1595,7 @@ beginning of the string, whereas using :func:`search` with a regular expression
 beginning with ``'^'`` will match at the beginning of each line. ::
 
    >>> re.match('X', 'A\nB\nX', re.MULTILINE)  # No match
+   >>> re.fullmatch('X', "A\nB\nX", re.MULTILINE)  # No Match
    >>> re.search('^X', 'A\nB\nX', re.MULTILINE)  # Match
    <re.Match object; span=(4, 5), match='X'>