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#513: Different runtime errors occurring depending on whether vtk package is installed or not #515

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10 changes: 9 additions & 1 deletion src/lbaf/Applications/MoveCountsViewer.py
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,11 @@
import sys
import csv
import importlib
import vtk
try:
import vtk
using_vtk = True
except ModuleNotFoundError:
using_vtk = False

# pylint:disable=C0413:wrong-import-position
# Use lbaf module from source if lbaf package is not installed
Expand Down Expand Up @@ -333,6 +337,10 @@ def compute_move_counts_viewer(self):
writer.Write()

def run(self):
# Raise error if vtk is not installed
if not using_vtk:
raise ModuleNotFoundError("Could not find vtk module, which is required for the MoveCountsViewer.")

"""Run the MoveCountViewer logic."""
# Parse command line arguments
self.__parse_args()
Expand Down
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