<simpara>or in Python 1.5.2:</simpara>
<programlisting>
-import string
-if string.find(filename, old_prefix) == 0:
- filename = string.replace(filename, old_prefix, new_prefix)
+if filename.find(old_prefix) == 0:
+ filename = filename.replace(old_prefix, new_prefix)
</programlisting>
</example>