hi there,
I'm trying to create an asset for my scene which should retrieve directories names as a drop down menu, so in the DigitalAsset parameter options I chose “use menu” and then wrote the following in the menu script tab:

import os

projects = “/mypathto/projects”
menuitem =
dirlist = os.listdir(projects)
dirlist.sort()

for d in dirlist:
if not d.startswith(“.”):
if os.path.isdir(d):
menuitem.append(d)

return menuitem


but this code fails giving me the following error:

Error running Python menu script:
Python menu scripts must return an even number of strings.

this code works in a normal python shell returning me a list of items, the directories I'm expecting.


I tried to debug it line by line and if I instead write the following script:

import os

projects = “/mypathto/projects”
menuitem =
dirlist = os.listdir(projects)
dirlist.sort()

for d in dirlist:
menuitem.append(d)

return menuitem

I do have the dropdown giving me options, but they're not indexed properly. for example I select “directory1” from the menu but simply printing the variable name gives me “directory2”.. or another unrelated directory anyway… and of course I'm not filtering the list anyway as it returns the hidden dir (“.”) and files too, which I don't want.

anyone can help me on this?
thanks!

The returned menu list must contain an even number of items because it needs matching tokens and label values.

This is invalid (also essentially what your code returns):

If those were your 5 directories you basically need to add each twice, where the first entry is the value and the second is the label. For example:

of course!! makes perfectly sense.
thanks a lot


(head banging against my desk)

here's the corrected code for reference:

import os

projects = “/mypath/to/projects”
menuitem =
dirlist = os.listdir(projects)

for d in dirlist:
if not d.startswith(“.”):
if os.path.isdir(os.path.join(projects,d)):
menuitem.append(d)
menuitem.append(d)

menuitem.sort()
return menuitem