This is the first time I have tried out functions (is that the main way
of making subroutines in Python?)
Anyway, my function, mutate, below
#make a child string by randomly changing one character of the parent
Def mutate():
newnum=random.randrange(27)
if newnum==0:
gene=' '
else:
gene=chr(newnum+96)
position=random.randrange(len(target))
child=parent[:position-1]+gene+parent[position+1:]
mutate()
The trouble is when I later (as in further down the code) attempt to
retrieve the value of gene I get an error saying that gene is undefined.
It works fine when I don't have the routine defined as a function. - the
IF- Else structure means gene must have a value of ' ' or 'a' to 'z'.
It seems that the line:
mutate()
is not invoking the function, but why not?
Thanks again - this group is great. I despair of ever being able to
contribute though :-(
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