Annotation filter with empty targdict

[mdenker]

If filtering a neo objects with an empty targdict, then nothing is returned. Desirable would be to return everything.

block.filter(targdict={},objects=["SpikeTrain"])

--> []

[lphan]

Some first results for function filter:
Following code worked, return list of all AnalogSignal found in Block:

print "targdict={} and objects='AnalogSignal' ", blk.filter(targdict={}, objects='ANALOGSignal')
print "targdict={} and objects=AnalogSignal ", blk.filter(targdict={}, objects=AnalogSignal)

[lphan]

print "targdict={} and objects=['AnalogSignal'] ", blk.filter(targdict={}, objects=['AnalogSignal']) 
print "targdict={} and objects=['AnalogSignal'] ", blk.filter(targdict={}, objects=['AnalogSiGNal']) 

also worked.
I will try next step with objects is a list ex. objects=['AnalogSignal', 'SpikeTrains']

[lphan]

Some new results like following also worked now:

print "targdict={} and objects=['SPikETRAin', 'AnalogSIGNAl', 'BLOCK'] ", blk.filter(targdict={}, objects=["SPikETRAin", "AnalogSIGNAL", "BLOCK"])

return a list of all targeted (searched) objects