[BioPython] IOError:[Errno 2]No such file or directory:'ls_orchid.fasta'

[ssalie_lab_staff_health_med_uct at mail.med.uct.ac.za]

CLASSPATH=C:\Python23\biopython-1.30\examples

I tried to run this script always the same error
Please Help!

C:\>C:\Python23\biopython-1.30\examples\fasta_iterator.py
Traceback (most recent call last):
  File "C:\Python23\biopython-1.30\examples\fasta_iterator.py", line 29, in ?
    all_species = extract_organisms("ls_orchid.fasta")
  File "C:\Python23\biopython-1.30\examples\fasta_iterator.py", line 7, in 
extra
ct_organisms
    file = open(file_to_parse, 'r')
IOError: [Errno 2] No such file or directory: 'ls_orchid.fasta'