Victor Subervi wrote:
Hi;
This "pseudo-code" snippet was given to me by Dennis on this list (whose
last name escapes me):
def printTree(allTrees, level=0):
tree = []
for aTree in allTrees:
for name in sorted(aTree.keys()):
tree.append("%s%s" % ("\t" * level, name))
printTree(aTree[name], level + 1)
return tree
The code returns all the categories ("name") just fine. It doesn't,
however, increment level. I know from my tests that printTree is only
called twice (once for each store) and about half a dozen times
recursively within one of those stores. Why doesn't this increment? Full
code follows.
[snip]
'level' is the amount by which the items should be indented. It doesn't
need to be incremented for each item (if that's what you mean). When
'printTree' calls itself to print a subtree, it passes in level + 1 so
that the items in the subtree will be indented by one more level.
The function looks slightly wrong to me because it's appending items to
a list and returning that list, but ignoring the result of printing the
subtree when it calls itself. Perhaps it should be this:
def printTree(allTrees, level=0):
tree = []
for aTree in allTrees:
for name in sorted(aTree.keys()):
tree.append("%s%s" % ("\t" * level, name))
tree += printTree(aTree[name], level + 1)
return tree
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