Of course, python-docx is great, in file docx/oxml/shape.py,class CT_GraphicalObjectData may be update ro render chart file,

The origin class:

class CT_GraphicalObjectData(BaseOxmlElement):
"""<a:graphicData> element, container for the XML of a DrawingML object."""

pic: CT_Picture = ZeroOrOne("pic:pic") # pyright: ignore[reportAssignmentType]
uri: str = RequiredAttribute("uri", XsdToken) # pyright: ignore[reportAssignmentType]

updated class
class CT_GraphicalObjectData(BaseOxmlElement):
"""<a:graphicData> element, container for the XML of a DrawingML object."""

pic: CT_Picture = ZeroOrOne("pic:pic") # pyright: ignore[reportAssignmentType]
cChart = ZeroOrOne('c:chart') 
uri: str = RequiredAttribute("uri", XsdToken) # pyright: ignore[reportAssignmentType]

By add cChart = ZeroOrOne('c:chart') ,charts tools such as python-pptx can be supported well.