def walktree(self,top=".", depthfirst=False):
"""
Walk a directory tree, starting from 'top'
This code is based on os.path.walk, with the callback function
replaced by a yield and recursion replaced by iteration
"""
if type(top) != types.StringType:
raise TypeError("top must be a string")
# decide which end of the stack to pop
if depthfirst:
index = -1
else:
index = 0
dirstack = [top]
while dirstack:
top = dirstack.pop(index)
try:
names = os.listdir(top)
except os.error:
return
yield top, names
dirs = []
for name in names:
name = os.path.join(top, name)
try:
st = os.lstat(name)
except os.error:
continue
if stat.S_ISDIR(st.st_mode):
dirs.append(name)
# the depth-first results look 'backwards' to me
# so I'm changing them to fit my expectations
if depthfirst:
dirs.reverse()
dirstack.extend(dirs)
this function might be useful
Sean McIlroy wrote:
> And now for a pair of questions that are completely different:
>
> 1) I'd like to be able to bind callbacks to presses of the arrow
> buttons on the keyboard. How do you say that in Tkinter?
>
> 2) The function 'listdir' in os.path returns a list of all the files
> in the given directory - how do I get hold of a list of its
> subdirectories?
>
> Any help will be greatly appreciated.
>
> Peace,
> STM
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