python - Lie to isinstance -


so, kluge. i'm working luigi , sciluigi.

the isinstance check in sciluigi package, , i'd rather kluge have branch entire sciluigi small issue :)

simply put, had subclass 1 of package's classes (luigi.localtarget)- add additional functionality. functionality works great, there's object check in sciluigi package...

sciluigi.dependencies.dependencyhelpers._parse_outputitem()

...which causes run fail because isinstance line set check 'targetinfo' objects.

what i'd tell child class 'lie' isinstance reports targetinfo object , passes :d

forgiveness asked in advance :d

def _parse_outputitem(self, val, targets):     '''     recursively loop through lists of targetinfos, or     callables returning targetinfos, or lists of ...     (repeat recursively) ... , return targets.     '''     if callable(val):         val = val()     if isinstance(val, targetinfo):         targets.append(val.target)     elif isinstance(val, list):         valitem in val:             targets = self._parse_outputitem(valitem, targets)     elif isinstance(val, dict):         _, valitem in iteritems(val):             targets = self._parse_outputitem(valitem, targets)     else:         raise exception('input item neither callable, targetinfo, nor list: %s' % val)     return targets

error message:

2017-04-06 22:26:09,753 - pipeinetest1 - debug - runsubprocess:traceback (most recent call last): 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:  file "/library/python/2.7/site-packages/luigi/worker.py", line 305, in check_complete 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:    is_complete = task.complete() 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:  file "/library/python/2.7/site-packages/luigi/task.py", line 482, in complete 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:    outputs = flatten(self.output()) 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:  file "/library/python/2.7/site-packages/sciluigi/dependencies.py", line 99, in output 2017-04-06 22:26:09,754 - pipeinetest1 - debug - runsubprocess:    return self._output_targets() 2017-04-06 22:26:09,755 - pipeinetest1 - debug - runsubprocess:  file "/library/python/2.7/site-packages/sciluigi/dependencies.py", line 111, in _output_targets 2017-04-06 22:26:09,755 - pipeinetest1 - debug - runsubprocess:    output_targets = self._parse_outputitem(attrval, output_targets) 2017-04-06 22:26:09,755 - pipeinetest1 - debug - runsubprocess:  file "/library/python/2.7/site-packages/sciluigi/dependencies.py", line 132, in _parse_outputitem 2017-04-06 22:26:09,755 - pipeinetest1 - debug - runsubprocess:    raise exception('input item neither callable, targetinfo, nor list: %s' % val) 2017-04-06 22:26:09,755 - pipeinetest1 - debug - runsubprocess:exception: input item neither callable, targetinfo, nor list: <bioproximity.common.luigi_extensions.local_target.toppaslocaltarget object @ 0x110e48190>

...unfortunately, thats 100% of error traceback sciluigi provides output.

sciluigi.dependencies.targetinfo(object)

class targetinfo(object):     '''     class used sending specification of target,     task, use, when stitching workflow tasks' outputs , inputs together.     '''     task = none     path = none     target = none      def __init__(self, task, path, format=none, is_tmp=false):         self.task = task         self.path = path         self.target = luigi.localtarget(path, format, is_tmp)      def open(self, *args, **kwargs):         '''         forward open method, luigi's target class         '''         return self.target.open(*args, **kwargs)  # ==============================================================================

it looks need subclass targetinfo object pass isinstance check. can have this:

class foo(<whatever other base classes have>, targetinfo):     ...

if have targetinfo root descendant shouldn't interfere class's functionality because other base classes override conflicting methods.


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