| Exception class | Description | Derived from
|
| PyModelDataError | exception base class for PyModelData | Exception
|
| ParserError | reading from a file or file-like object failed | PyModelDataError
|
| UnitMismatchError | the units in the template file and in the model data file do not match | PyModelDataError
|
| OutOfRangeError | the value of a property does not fit in the specified range | PyModelDataError
|
| AccessError | the model data is invalid, i. e. the value of an item isn't a dictionary; non-existent name of a group, item or property (see below) | PyModelDataError
|
| InvalidGroupError | attempt to access a non-existent group by name | AccessError
|
| InvalidItemError | attempt to access a non-existent item by name | AccessError
|
| InvalidPropertyError | attempt to access a non-existent property by name | AccessError
|
