It's not necessary to store the label in the context type, instead use
the corresponding library function to get the current in-memory label
container.
The device label information is stored in-memory by libfdisk library
when creating a context or assigning a device.
Avoids possible incosistencies between libfdisk in-memory label and
python-libfdisk context type label information.
python-libfdisk raises Python exceptions when the libfdisk reports an
error when executing some function. libfdisk returns negative
errno values when reporting some error.
Adds utility function to set PyErr string based on the strerror of
a given errno code. Useful when raising Python exceptions.
Call Partition_AddModuleObject when initializing the python module.
Fixes bug when using the Partition class but the class has not
been added to the module via Py_TypeReady.
A common error was the type not being ready (missing attributes):
>>> for pa in cxt.parts:
... print(pa.partno)
...
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
AttributeError: 'libfdisk.Partition' object has no attribute 'partno'
Jose M. Guisado
Jose M. Guisado Gomez