diff --git a/cookieplone/__init__.py b/cookieplone/__init__.py
index 6d18af6..14a7d0e 100644
--- a/cookieplone/__init__.py
+++ b/cookieplone/__init__.py
@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: 2024-present Plone Foundation <board@plone.org>
 #
 # SPDX-License-Identifier: MIT
-__version__ = "0.7.2.dev0"
+__version__ = "0.8.0.dev0"
diff --git a/cookieplone/filters/__init__.py b/cookieplone/filters/__init__.py
index d7f1f80..34c63ec 100644
--- a/cookieplone/filters/__init__.py
+++ b/cookieplone/filters/__init__.py
@@ -11,13 +11,33 @@
 @simple_filter
 def package_name(v) -> str:
     """Return the Python package name (without namespace)."""
-    return v.split(".")[1]
+    return v.split(".")[-1]
 
 
 @simple_filter
 def package_namespace(v) -> str:
     """Return the Python package namespace."""
-    return v.split(".")[0]
+    parts = v.rsplit(".", 1)
+    if len(parts) > 1:
+        return parts[0]
+    return ""
+
+
+@simple_filter
+def package_namespaces(v) -> str:
+    """Return Python package namespaces formatted for setup.py."""
+    result = []
+    nsparts = []
+    for ns in v.split(".")[:-1]:
+        nsparts.append(ns)
+        result.append(".".join(nsparts))
+    return ", ".join(f'"{item}"' for item in result)
+
+
+@simple_filter
+def package_path(v) -> str:
+    """Return path to the package code within the src directory."""
+    return "/".join(v.split("."))
 
 
 @simple_filter
diff --git a/cookieplone/utils/plone.py b/cookieplone/utils/plone.py
index 92eb43c..2ea505f 100644
--- a/cookieplone/utils/plone.py
+++ b/cookieplone/utils/plone.py
@@ -49,3 +49,15 @@ def format_python_codebase(path: Path):
     for cmd, func in PY_FORMATTERS:
         logger.debug(f"Format codebase: Running {cmd}")
         func(path)
+
+
+def create_namespace_packages(path: Path, package_name: str):
+    """Create namespace packages to hold an existing package."""
+    current = path.parent
+    for namespace in package_name.split(".")[:-1]:
+        current = current / namespace
+        current.mkdir()
+        (current / "__init__.py").write_text(
+            '__import__("pkg_resources").declare_namespace(__name__)\n'
+        )
+    path.rename(current / package_name.split(".")[-1])
diff --git a/cookieplone/utils/validators.py b/cookieplone/utils/validators.py
index fd78e28..2f6b522 100644
--- a/cookieplone/utils/validators.py
+++ b/cookieplone/utils/validators.py
@@ -54,11 +54,6 @@ def validate_python_package_name(value: str) -> str:
     parts = value.split(".")
     if any(not part.isidentifier() for part in parts):
         return f"'{value}' is not a valid Python identifier."
-    if len(parts) != 2:
-        return (
-            "The Python package name must contain a single namespace "
-            "(e.g. collective.something)"
-        )
     return ""
 
 
diff --git a/news/43.feature b/news/43.feature
new file mode 100644
index 0000000..6e673ca
--- /dev/null
+++ b/news/43.feature
@@ -0,0 +1 @@
+Support Python package names with no namespace or multiple namespaces. @davisagli
diff --git a/tests/test_filters.py b/tests/test_filters.py
index f51cac4..9ccabab 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -21,8 +21,20 @@ def func(filter_: str) -> Path:
 @pytest.mark.parametrize(
     "filter_,raw,expected",
     [
+        ["package_name", "{{'foo' | package_name}}", "foo"],
         ["package_name", "{{'foo.bar' | package_name}}", "bar"],
+        ["package_namespace", "{{'foo' | package_namespace}}", ""],
         ["package_namespace", "{{'foo.bar' | package_namespace}}", "foo"],
+        ["package_namespaces", "{{'foo' | package_namespaces}}", ""],
+        ["package_namespaces", "{{'foo.bar' | package_namespaces}}", '"foo"'],
+        [
+            "package_namespaces",
+            "{{'foo.bar.baz' | package_namespaces}}",
+            '"foo", "foo.bar"',
+        ],
+        ["package_path", "{{'foo' | package_path}}", "foo"],
+        ["package_path", "{{'foo.bar' | package_path}}", "foo/bar"],
+        ["package_path", "{{'foo.bar.baz' | package_path}}", "foo/bar/baz"],
         ["pascal_case", "{{'foo_bar' | pascal_case}}", "FooBar"],
         ["use_prerelease_versions", "{{ '' | use_prerelease_versions }}", "No"],
         ["node_version_for_volto", "{{'17' | node_version_for_volto}}", "18"],
diff --git a/tests/utils/test_validators.py b/tests/utils/test_validators.py
index da7be7e..5c7c56a 100644
--- a/tests/utils/test_validators.py
+++ b/tests/utils/test_validators.py
@@ -73,22 +73,9 @@ def test_validate_language_code(value: str, expected: str):
         (" ", "' ' is not a valid Python identifier."),
         ("", "'' is not a valid Python identifier."),
         ("project title", "'project title' is not a valid Python identifier."),
-        (
-            "project_title",
-            "The Python package name must contain a single namespace "
-            "(e.g. collective.something)",
-        ),
+        ("project_title", ""),
         ("project-title", "'project-title' is not a valid Python identifier."),
-        (
-            "projecttitle",
-            "The Python package name must contain a single namespace "
-            "(e.g. collective.something)",
-        ),
-        (
-            "projectTitle",
-            "The Python package name must contain a single namespace "
-            "(e.g. collective.something)",
-        ),
+        ("projecttitle", ""),
         ("project.title", ""),
     ),
 )