Parse error

[arnoutaertgeerts]

When trying to load a file with ModelicaRes I get the following error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-2-2fff0ce928b3> in <module>()
----> 1 data = SimRes(r'../Results/SolarCollector.mat')

/home/arnout/Projects/Work/ModelicaRes/modelicares/simres.pyc in __init__(self, fname, constants_only, tool)
    954                 raise LookupError("%s isn't one of the available tools (%s)."
    955                                   % (tool, ', '.join(list(readerdict))))
--> 956         variables = read(fname, constants_only)
    957         self.update(variables)
    958 

/home/arnout/Projects/Work/ModelicaRes/modelicares/_io/dymola.pyc in readsim(fname, constants_only)
    375                     if not display_unit:
    376                         display_unit = unit_str
--> 377                     unit = U._units(**nc.Exponents.fromstr(unit_str))
    378                     try:
    379                         _apply_unit(signed_values, unit)

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.py in fromstr(cls, expr)
    442                     new -= cls.fromstr(subexpr)
    443             else:
--> 444                 expr = process_expression(expr, new, add)
    445 
    446             # Get the operator for the next loop.

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.py in process_expression(expr, exponents, add)
    421 
    422             # Find the base, exponent, and remainder of the expression.
--> 423             base, exp, remainder = _split(expr)
    424 
    425             # Update the exponents.

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.py in _split(factor)
    182     """
    183     # Parse the factor.
--> 184     base, exp_fr, exp_fl, exp_i, remainder = parser.match(factor).groups()
    185 
    186     # Cast the exponent into the appropriate number type.

AttributeError: 'NoneType' object has no attribute 'groups'

any idea what might be causing this? The result file is generated by Dymola.

[arnoutaertgeerts]

The error is caused by this factor:

:#(type=Modelica_Fluid_Types*Dynamics)

I don't know why natu wants to parse this? Maybe you should prevent natu from parsing types like this?

[arnoutaertgeerts]

@kdavies4 Did you find some time to look at this issue? :)

[kdavies4]

Sorry for the delay. Could you send me the SolarCollector.mat file? ModelicaRes is trying to use natu to parse known units out of the unit attribute of the Modelica variable. What is :#(type=ModelicaFluidTypes*Dynamics) and where is it written?

[kdavies4]

Interesting. That file works for me. Could you update natu if it's not at v0.1.1? (Do pip install --upgrade natu.) Also, please check that you have the latest modelicares (currently commit c5bed955 -- unreleased).

[arnoutaertgeerts]

Kevin, I tried again with the latest Modelicares commit https://github.com/kdavies4/ModelicaRes/commit/9339ef6885ad663f855edb820dd6ef61053b322b and natu 0.1.1 but the file still fails to load with the same error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-2-2fff0ce928b3> in <module>()
----> 1 data = SimRes(r'../Results/SolarCollector.mat')

/home/arnout/anaconda/lib/python2.7/site-packages/ModelicaRes-0.12.2_117_g9339ef6-py2.7.egg/modelicares/simres.pyc in __init__(self, fname, constants_only, tool)
    954                 raise LookupError("%s isn't one of the available tools (%s)."
    955                                   % (tool, ', '.join(list(readerdict))))
--> 956         variables = read(fname, constants_only)
    957         self.update(variables)
    958 

/home/arnout/anaconda/lib/python2.7/site-packages/ModelicaRes-0.12.2_117_g9339ef6-py2.7.egg/modelicares/_io/dymola.pyc in readsim(fname, constants_only)
    375                     if not display_unit:
    376                         display_unit = unit_str
--> 377                     unit = U._units(**nc.Exponents.fromstr(unit_str))
    378                     try:
    379                         _apply_unit(signed_values, unit)

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.pyc in fromstr(cls, expr)
    442                     new -= cls.fromstr(subexpr)
    443             else:
--> 444                 expr = process_expression(expr, new, add)
    445 
    446             # Get the operator for the next loop.

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.pyc in process_expression(expr, exponents, add)
    421 
    422             # Find the base, exponent, and remainder of the expression.
--> 423             base, exp, remainder = _split(expr)
    424 
    425             # Update the exponents.

/home/arnout/anaconda/lib/python2.7/site-packages/natu/exponents.pyc in _split(factor)
    183     # Parse the factor.
--> 184     base, exp_fr, exp_fl, exp_i, remainder = parser.match(factor).groups()
    185 
    186     # Cast the exponent into the appropriate number type.

AttributeError: 'NoneType' object has no attribute 'groups'