import traceback

import vistrails as vt

vistrail = vt.load_vistrail('examples/simplemath.vt')

vistrail

vistrail.select_latest_version()

vistrail

vistrail.get_pipeline(2)

tabledata = vt.load_package('org.vistrails.vistrails.tabledata')
tabledata

tabledata.convert

from vistrails.core.modules.module_registry import MissingModule
try:
    tabledata['convert']  # can't get namespaces this way, use a dot
except MissingModule:
    pass
else:
    assert False

tabledata.BuildTable, tabledata['BuildTable']

tabledata.read.CSVFile, tabledata['read|CSVFile']

outputs = vt.load_vistrail('examples/outputs.vt')
outputs.select_version(1)
outputs

# Errors
try:
    result = outputs.execute()
except vt.ExecutionErrors:
    traceback.print_exc()
else:
    assert False

# Results
outputs.select_latest_version()
result = outputs.execute()
result

outputs

outputs.current_pipeline

result.module_output(0)

result.output_port('msg')

pipeline = vistrail.current_pipeline
pipeline

in_a = pipeline.get_input('in_a')
assert (in_a == pipeline.get_module('First input')) is True
in_a

result = pipeline.execute(in_a == 2, in_b=4)

result.output_port('out_times'), result.output_port('out_plus')

im = vt.load_vistrail('examples/imagemagick.vt')

im.select_version('read')
im

im.execute().output_port('result')

im.select_version('blur')
im

im.execute().output_port('result')

im.select_version('edges')
im.execute().output_port('result')