Just forget the lists...
counters = {0:0, 1:0, 2:0, 3:0, 4:0}
def increment(value):
counters[value] += 1
increment(1)
increment(1)
increment(3)
increment(4)
print counters[0]
>>> 0
print counters[1]
>>> 2
print coutners[2]
>>> 0
print counters[3]
>>> 1
print coutners[4]
>>> 1
The increment function should probably include a try:...except:
statement to catch KeyErrors that would arise if you passed a value
that is not a key in the counters dictionary.
Rob C
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