[Python Edinburgh] How to do dynamic nesting of loops
Douglas Houston
douglasrhouston at googlemail.com
Tue Nov 18 13:08:03 CET 2014
Hi all,
I'm a bit stuck with this so maybe someone can help me.
I'm writing a little program that needs to iterate through several nested
'for' loops. However, the number of loops (and therefore the depth of the
nesting) cannot be predetermined.
I've read that lots of nested loops are bad form anyway, and that "you
should do it with functions instead".
However I still can't work out how to set the number dynamically.
for ((l=0; l<10; l++)); do
for ((m=0; m<10; m++))
;
do
for (n=0; n<10; n++)); do
something
that uses l, m and n
done
done
done
So this is what it needs to look like if nest_depth=3
But how do I write a program that iterates something
for nest_depth=4 (which in this case would use l, m, n and o), or any
other number (which can't be predicted)?
cheers,
Doug
PS I didn't write this in Python just for speed, but feel free to reply in
Python if you want - the practice would be good for me.
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