The **Aspose.Cells.Properties**  namespace provides classes to work with custom and built-in Spreadsheet properties such as title, keywords, company etc.

### Classes
| Class | Description |
| :- | :- |
| [`BuiltInDocumentPropertyCollection`](/cells/python-net/aspose.cells.properties/builtindocumentpropertycollection) | A collection of built-in document properties. |
| [`ContentTypeProperty`](/cells/python-net/aspose.cells.properties/contenttypeproperty) | Represents identifier information. |
| [`ContentTypePropertyCollection`](/cells/python-net/aspose.cells.properties/contenttypepropertycollection) | A collection of [`ContentTypeProperty`](/cells/python-net/aspose.cells.properties/contenttypeproperty) objects that represent additional information. |
| [`CustomDocumentPropertyCollection`](/cells/python-net/aspose.cells.properties/customdocumentpropertycollection) | A collection of custom document properties. |
| [`CustomProperty`](/cells/python-net/aspose.cells.properties/customproperty) | Represents a custom property which store name and value pairs of arbitrary user-defined data for worksheet. |
| [`CustomPropertyCollection`](/cells/python-net/aspose.cells.properties/custompropertycollection) | A collection of [`CustomProperty`](/cells/python-net/aspose.cells.properties/customproperty) objects that represent additional information. |
| [`DocumentProperty`](/cells/python-net/aspose.cells.properties/documentproperty) | Represents a custom or built-in document property. |


### Enumerations
| Enumeration | Description |
| :- | :- |
| [`PropertyType`](/cells/python-net/aspose.cells.properties/propertytype) | Specifies data type of a document property. |