Problem within loops

asma.ch · April 2017

Hi!
When preparing my research about a cuing experiment, I had to use the version 1.6 of opensesame. However, when executing, I was confronted to a problem within the loops.
This problem persists even when I try to present some simple images.
Here's the error that I'm talking about.
I also have another problem : when I close a file, the loops get erased when I re-open it.

Thank you in advance.

sebastiaan · April 2017

Hi Asma,

The crucial part of the error message is always at the bottom, so it's not visible in your screenshot ;-)

You'll also find the stacktrace (i.e. the error message) in the debug window (Ctrl+D). Could you copy the entire error message from there?

Cheers,
Sebastiaan

asma.ch · April 2017

 File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libqtopensesame\runners\base_runner.py", line 221, in init_experiment
    logfile=logfile)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\experiment.py", line 140, in __init__
    item.item.__init__(self, name, self, string)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\item.py", line 67, in __init__
    self.from_string(string)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\experiment.py", line 345, in from_string
    self.items.new(item_type, item_name, def_str)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\item_store.py", line 174, in new
    item = item_class(name, self.experiment, script)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\item.py", line 67, in __init__
    self.from_string(string)
  File "C:\Program Files (x86)\OpenSesame\lib\site-packages\libopensesame\loop.py", line 91, in from_string
    self.dm[var] = u''
  File "build/bdist.linux-x86_64/egg/datamatrix/_datamatrix/_datamatrix.py", line 494, in __setitem__
    self.__setattr__(name, value)
  File "build/bdist.linux-x86_64/egg/datamatrix/_datamatrix/_datamatrix.py", line 441, in __setattr__
    self._setlength(value)
  File "build/bdist.linux-x86_64/egg/datamatrix/_datamatrix/_datamatrix.py", line 221, in _setlength
    rowid = Index([i+startid for i in range(value-len(self))])
TypeError: unsupported operand type(s) for -: 'unicode' and 'int'

sebastiaan · April 2017

Hi Asma,

Thanks for pointing this out. You probably have a column named length, right? Renaming this column to say _length, for example by opening the experiment in an older version, should fix the issue.

This is clearly a bug, and I opened an issue for it so that it will be resolved in 3.1.7.

Cheers!
Sebastiaan

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Problem within loops

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