bug in ilastik connector: if unassigned pixel files in pixeldata folder (no labels can be assigend)

[cmohl2013]

if in the pixeldata folder there are image files that cannot be assigned to a label image in the ilp project, a None is assigned

labelfilename: None
Traceback (most recent call last):
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/venv_animate_yapic_vs01/bin/yapic", line 11, in <module>
    load_entry_point('yapic-cli', 'console_scripts', 'yapic')()
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_cli/yapic_cli/main.py", line 99, in entry_point
    res = main(arguments)
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_cli/yapic_cli/main.py", line 90, in main
    res = train(args)
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_cli/yapic_cli/train.py", line 138, in train
    val_fraction)
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_cli/yapic_cli/train.py", line 45, in import_training_data
    conn = io_connector(image_path, label_path).filter_labeled()
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_io/yapic_io/connector.py", line 12, in io_connector
    return IlastikConnector(image_path, label_path, *args, **kwds)
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_io/yapic_io/tiff_connector.py", line 119, in __init__
    original_labels = self.original_label_values_for_all_images()
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/yapic_vs01/yapic_io/yapic_io/ilastik_connector.py", line 149, in original_label_values_for_all_images
    filename, (img, lbl, prediction) = self.ilp[label_filename]
  File "/mnt/moehlc/idaf/IDAF_Projects/170512_max_neurite_classification/code/venv_animate_yapic_vs01/lib/python3.5/site-packages/pyilastik/ilastik_storage_version_01.py", line 89, in __getitem__
    idx = self.image_path_list().index(i)
ValueError: 'None' is not in list