增加了提issue的功能

Signed-off-by: Chen Xiao <abigwc@gmail.com>

server/venv/Lib/site-packages/docx/parts/numbering.py

@@ -0,0 +1,32 @@
+"""|NumberingPart| and closely related objects."""
+
+from ..opc.part import XmlPart
+from ..shared import lazyproperty
+
+
+class NumberingPart(XmlPart):
+    """Proxy for the numbering.xml part containing numbering definitions for a document
+    or glossary."""
+
+    @classmethod
+    def new(cls) -> "NumberingPart":
+        """Newly created numbering part, containing only the root ``<w:numbering>`` element."""
+        raise NotImplementedError
+
+    @lazyproperty
+    def numbering_definitions(self):
+        """The |_NumberingDefinitions| instance containing the numbering definitions
+        (<w:num> element proxies) for this numbering part."""
+        return _NumberingDefinitions(self._element)
+
+
+class _NumberingDefinitions:
+    """Collection of |_NumberingDefinition| instances corresponding to the ``<w:num>``
+    elements in a numbering part."""
+
+    def __init__(self, numbering_elm):
+        super(_NumberingDefinitions, self).__init__()
+        self._numbering = numbering_elm
+
+    def __len__(self):
+        return len(self._numbering.num_lst)