Split not working

[morgandebray]

Hi, I want to know why my split is not wokring (the other splits are perfectly working :

for ligneTiers in contenuTiers:
         ligneSplit = ligneTiers.split(';')
         sys.stderr.write(ligneSplit[0])

Initial = 78717;26410009000010;0;0;1
Expected = 78717
Result = 7871726410009000010001