os.isfile() error

[Gary Wessle]

Hi

could someone help me to find out whats wrong with this code?

**************** code ****************
import os, sys

if len(sys.argv) < 2:
    sys.exit("please enter a suitable directory.")

dpath = sys.argv[1]
for name in os.listdir(dpath):
    if os.isfile(dpath+name):
        infile = open(os.path.join(dpath,name), 'rb')
print type(infile)


**************** error ****************
Traceback (most recent call last):
  File "python/useful/cat2all.py", line 13, in ?
    if os.isfile(dpath+name):
AttributeError: 'module' object has no attribute 'isfile'


thank you