yeah i see... i would try to go through something like
meta_node['focal'].animation(0).evaluate(f) to get the meta data
and then modify the read path using that...
below is an (untested) attempt, and you'll probably still have
to fix the float, int, string problems...
coming to think of it, that could be why your method doesn't
work either - if you have a number of 1 it might read as 1.0 so
you might have to change your file naming accordingly.
chris
import nuke
import os
target_directory = "path/to/your/directory"
dynamic_read = nuke.toNode("YourReadNode")
dynamic_write = nuke.toNode("YourWriteNode")
meta_node = nuke.toNode("YourMetaNode")
first_frame = int(nuke.root()['first_frame'].value())
last_frame = int(nuke.root()['last_frame'].value())
for f in range(first_frame, last_frame):
meta_data = str(meta_node['focal'].animation(0).evaluate(f))
file_path = target_directory + meta_data
dynamic_read['file'].fromUserText(file_path)
frame = int(f)
nuke.execute(dynamic_write, frame, frame)
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