python "Key Error"

[a9balsza]

i made an .fcl file in qtfuzzylite.I want to load it in python 2.7 with fcl Reader.It must do some calculation with the given inputs then it must give the output value.when i run the program it writes Key Error 'PNEU

I used this example: http://pyfuzzy.sourceforge.net/doc/quickstart.html

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import fuzzy.storage.fcl.Reader system = fuzzy.storage.fcl.Reader.Reader().load_from_file("Ballpositioner2.fcl")    # preallocate input and output values my_input = {         "REQ_POS" : 0.0,         "REQ_ANGLE" : 0.0,         "DESIRED" : 0.0,                   } my_output = {         "PNEU" : 3,         }    # if you need only one calculation you do not need the while           # set input values my_input["REQ_POS"] = 10 my_input["REQ_ANGLE"] = 20 my_input["DESIRED"] = 30         # calculate           system.calculate(my_input, my_output)            # now use outputs b = my_output["PNEU"]       line 3:0 extraneous input u'VAR_INPUT' expecting Identifier   Traceback (most recent call last):   File "D:\Szabolcs\szte\Szakdolgozat\Python\python 27\ewrwewerwer.py", line 23, in <module>     system.calculate(my_input, my_output)   File "C:\Python27\lib\site-packages\fuzzy\System.py", line 93, in calculate     self.defuzzify(output)   File "C:\Python27\lib\site-packages\fuzzy\System.py", line 76, in defuzzify     output[name] = self.variables[name].getValue() KeyError: 'PNEU'

[ichabod801]

A copy of my most recent reply on the old forums:

It's not writing it for the output. It's assigning to the output. You won't get a key error on assignment. If the key isn't there during assignment the key just gets added. The error is when it's accessing self.variables[name]. On access it will give the key error if the key isn't there. The traceback shows this is happening during system.calculate, so self is equal to system, and thus system.variables does not have the key 'PNEU'. The system variable is assigned when reading the file, leading to the conclusion that 'PNEU' is not in the file.

[a9balsza]

How can it be solved?

[Yoriz]

Use a file that has 'PNEU' in it or use a different key that is actually in the file.

[a9balsza]

Ballpositioner2.fcl must contain information about PNEU? Because it's in there.

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FUNCTION_BLOCK   VAR_INPUT   REQ_POS: REAL;   REQ_ANGLE: REAL;   DESIRED: REAL; END_VAR   VAR_OUTPUT   PNEU: REAL; END_VAR   FUZZIFY REQ_POS   ENABLED : TRUE;   RANGE := (-35.000 .. 35.000);   TERM FAR := Ramp 0.000 -35.000;   TERM CENTER := Triangle -35.000 0.000 35.000;   TERM CLOSE := Ramp 0.000 35.000; END_FUZZIFY   FUZZIFY REQ_ANGLE   ENABLED : TRUE;   RANGE := (-45.000 .. 45.000);   TERM RIGHT := Ramp 2.000 45.000;   TERM LEFT := Ramp -2.000 -45.000;   TERM HORIZONTAL := Triangle -2.000 0.000 2.000; END_FUZZIFY   FUZZIFY DESIRED   ENABLED : TRUE;   RANGE := (-35.000 .. 35.000);   TERM FAR := Ramp 0.000 -35.000;   TERM CENTER := Triangle -35.000 0.000 35.000;   TERM CLOSE := Ramp 0.000 35.000; END_FUZZIFY   DEFUZZIFY PNEU   ENABLED : TRUE;   RANGE := (0.000 .. 255.000);   TERM LEFT := Triangle 0.000 42.500 85.000;   TERM NOTHING := Triangle 85.000 127.500 170.000;   TERM RIGHT := Triangle 172.500 215.000 255.000;   METHOD : COG;   ACCU : HSUM;   DEFAULT := nan; END_DEFUZZIFY   RULEBLOCK   ENABLED : TRUE;   AND : MIN;   OR : MAX;   ACT : MIN;   RULE 1 : if REQ_POS is FAR and REQ_ANGLE is LEFT and DESIRED is FAR then PNEU is LEFT   RULE 2 : if REQ_POS is FAR and REQ_ANGLE is LEFT and DESIRED is CENTER then PNEU is LEFT   RULE 3 : if REQ_POS is FAR and REQ_ANGLE is LEFT and DESIRED is CLOSE then PNEU is LEFT   RULE 4 : if REQ_POS is FAR and REQ_ANGLE is RIGHT and DESIRED is FAR then PNEU is RIGHT   RULE 5 : if REQ_POS is FAR and REQ_ANGLE is RIGHT and DESIRED is CENTER then PNEU is LEFT   RULE 6 : if REQ_POS is FAR and REQ_ANGLE is RIGHT and DESIRED is CLOSE then PNEU is LEFT   RULE 7 : if REQ_POS is FAR and REQ_ANGLE is HORIZONTAL and DESIRED is FAR then PNEU is NOTHING   RULE 8 : if REQ_POS is FAR and REQ_ANGLE is HORIZONTAL and DESIRED is CENTER then PNEU is LEFT   RULE 9 : if REQ_POS is FAR and REQ_ANGLE is HORIZONTAL and DESIRED is CLOSE then PNEU is LEFT   RULE 10 : if REQ_POS is CENTER and REQ_ANGLE is LEFT and DESIRED is FAR then PNEU is RIGHT   RULE 11 : if REQ_POS is CENTER and REQ_ANGLE is LEFT and DESIRED is CENTER then PNEU is LEFT   RULE 12 : if REQ_POS is CENTER and REQ_ANGLE is LEFT and DESIRED is CLOSE then PNEU is LEFT   RULE 13 : if REQ_POS is CENTER and REQ_ANGLE is RIGHT and DESIRED is FAR then PNEU is RIGHT   RULE 14 : if REQ_POS is CENTER and REQ_ANGLE is RIGHT and DESIRED is CENTER then PNEU is RIGHT   RULE 15 : if REQ_POS is CENTER and REQ_ANGLE is RIGHT and DESIRED is CLOSE then PNEU is LEFT   RULE 16 : if REQ_POS is CENTER and REQ_ANGLE is HORIZONTAL and DESIRED is FAR then PNEU is RIGHT   RULE 17 : if REQ_POS is CENTER and REQ_ANGLE is HORIZONTAL and DESIRED is CENTER then PNEU is NOTHING   RULE 18 : if REQ_POS is CENTER and REQ_ANGLE is HORIZONTAL and DESIRED is CLOSE then PNEU is LEFT   RULE 19 : if REQ_POS is CLOSE and REQ_ANGLE is LEFT and DESIRED is FAR then PNEU is RIGHT   RULE 20 : if REQ_POS is CLOSE and REQ_ANGLE is LEFT and DESIRED is CENTER then PNEU is RIGHT   RULE 21 : if REQ_POS is CLOSE and REQ_ANGLE is LEFT and DESIRED is CLOSE then PNEU is LEFT   RULE 22 : if REQ_POS is CLOSE and REQ_ANGLE is RIGHT and DESIRED is FAR then PNEU is RIGHT   RULE 23 : if REQ_POS is CLOSE and REQ_ANGLE is RIGHT and DESIRED is CENTER then PNEU is RIGHT   RULE 24 : if REQ_POS is CLOSE and REQ_ANGLE is RIGHT and DESIRED is CLOSE then PNEU is RIGHT   RULE 25 : if REQ_POS is CLOSE and REQ_ANGLE is HORIZONTAL and DESIRED is FAR then PNEU is RIGHT   RULE 26 : if REQ_POS is CLOSE and REQ_ANGLE is HORIZONTAL and DESIRED is CENTER then PNEU is RIGHT   RULE 27 : if REQ_POS is CLOSE and REQ_ANGLE is HORIZONTAL and DESIRED is CLOSE then PNEU is NOTHING END_RULEBLOCK   END_FUNCTION_BLOCK

[Yoriz]

if you comment out

1	b = my_output["PNEU"]

and put

1	print my_output

what output does that give?