Isn’t this an index or am I just doing it wrong?
(To run the script you’ll need two clips in the vse with a cross transition between them)
import bpy
seq_strips = bpy.context.scene.sequence_editor.sequences
for strip in seq_strips:
if strip.type in ['CROSS']:
try:
next_element = seq_strips[seq_strips.index(strip)+1]
except (ValueError,IndexError):
next_element = ""
print ("Current: "+strip.bpy.path.basename(strip.filepath) )
print ("Next: "+next_element.bpy.path.basename(strip.filepath))