diff --git a/doc/sphinxext/announce.py b/doc/sphinxext/announce.py
index 66e999e251c5e..18a028248775e 100755
--- a/doc/sphinxext/announce.py
+++ b/doc/sphinxext/announce.py
@@ -57,6 +57,22 @@
 
 
 def get_authors(revision_range):
+    """
+    Extract authors from a range of revisions.
+
+    This designed to list the authors who contributed to a given range of revisions in a Git repository. 
+    It identifies new contributors within range and distinguishes them with a "+" sign.
+
+    Parameters
+    ----------
+    revision_range : str
+        Release dates.
+
+    Returns
+    -------
+    List
+        List of authors.
+    """
     pat = "^.*\\t(.*)$"
     lst_release, cur_release = (r.strip() for r in revision_range.split(".."))
 
@@ -109,6 +125,24 @@ def get_authors(revision_range):
 
 
 def get_pull_requests(repo, revision_range):
+    """
+    Extract pull request numbers from a range of revisions
+
+    This function identifies pull requests merged in a given range of revisions
+    in a Git repository. It includes regular merges, auto merges, and squash-merges.
+
+    Parameters
+    ----------
+    repo : github.Repository.Repository
+        The GitHub repository object.
+    revision_range : str
+        The range of revisions to examine, in the format "<start_revision>..<end_revision>".
+
+    Returns
+    -------
+    List
+        List of pull requests.
+    """
     prnums = []
 
     # From regular merges
@@ -134,6 +168,24 @@ def get_pull_requests(repo, revision_range):
 
 
 def build_components(revision_range, heading="Contributors"):
+    """
+    Build components for the release notes
+
+    This function constructs the components required for generating the release notes,
+    including the heading, author message, and list of authors.
+
+    Parameters
+    ----------
+    revision_range : str
+        The range of revisions to examine, in the format "<start_revision>..<end_revision>".
+    heading : str, optional
+        The heading for the release notes, by default "Contributors".
+
+    Returns
+    -------
+    dict
+        Dictionary containing the heading, author message, and list of authors.
+    """
     lst_release, cur_release = (r.strip() for r in revision_range.split(".."))
     authors = get_authors(revision_range)
 
@@ -145,6 +197,24 @@ def build_components(revision_range, heading="Contributors"):
 
 
 def build_string(revision_range, heading="Contributors"):
+    """
+    Build the release notes string
+
+    This function formats the release notes as a string using the components generated
+    by build_components.
+
+    Parameters
+    ----------
+    revision_range : str
+        The range of revisions to examine, in the format "<start_revision>..<end_revision>".
+    heading : str, optional
+        The heading for the release notes, by default "Contributors".
+
+    Returns
+    -------
+    str
+        Formatted release notes.
+    """
     components = build_components(revision_range, heading=heading)
     components["uline"] = "=" * len(components["heading"])
     components["authors"] = "* " + "\n* ".join(components["authors"])
@@ -162,6 +232,17 @@ def build_string(revision_range, heading="Contributors"):
 
 
 def main(revision_range):
+    """
+    Main function to generate and print the release notes
+
+    This function generates the release notes for the given revision range
+    and prints them to the standard output.
+
+    Parameters
+    ----------
+    revision_range : str
+        The range of revisions to examine, in the format "<start_revision>..<end_revision>".
+    """
     # document authors
     text = build_string(revision_range)
     print(text)
diff --git a/doc/sphinxext/contributors.py b/doc/sphinxext/contributors.py
index 06f205b5cc3ce..17a5acacf7ec1 100644
--- a/doc/sphinxext/contributors.py
+++ b/doc/sphinxext/contributors.py
@@ -26,6 +26,18 @@ class ContributorsDirective(Directive):
     name = "contributors"
 
     def run(self):
+        """
+        Execute the ContributorsDirective directive.
+
+        This function retrieves information about code contributors and commits within
+        a specified version range and generates a list of contributors to include in the
+        documentation.
+
+        Returns
+        -------
+        List
+            List containing author message and contributors.
+        """
         range_ = self.arguments[0]
         if range_.endswith("x..HEAD"):
             return [nodes.paragraph(), nodes.bullet_list()]
@@ -53,6 +65,22 @@ def run(self):
 
 
 def setup(app):
+    """
+    Setup function for the Sphinx extension.
+
+    This function initializes the Sphinx extension, adding the 'contributors' directive
+    to the app.
+
+    Parameters
+    ----------
+    app : sphinx.application.Sphinx
+        The Sphinx application object.
+    
+    Returns
+    -------
+    dict
+        A dictionary containing version information and safety flags for the extension.
+    """
     app.add_directive("contributors", ContributorsDirective)
 
     return {"version": "0.1", "parallel_read_safe": True, "parallel_write_safe": True}