python - Set layer in edit mode in QGIS processing

Set a layer editable through the Python console works fine here (QGIS 2.18.4):

layer=iface.activeLayer()
if not layer.isEditable():
    qgis.utils.iface.actionToggleEditing().trigger()

But I do not know how to set a input layer editable in a QGIS processing script:

##Input_layer=vector

# ...
inlayer = processing.getObject(Input_layer)
if not inlayer.isEditable():
    #???

Can anybody help me with this?

Answer

You can use QgsVectorLayer.startEditing().
Then once your edits are complete you can either commitChanges() or rollBack() as approriate

##Input_layer=vector

# ...
inlayer = processing.getObject(Input_layer)
if not inlayer.isEditable():
    inlayer.startEditing()
    # ...
    inlayer.commitChanges()