Problem using lseek

[Michael Mayhew]

Greetings,

	I have been using Python faithfully for the past five months and am quite 
happy having learned it. That being said, I am currently having a real 
honey of a problem. I am trying to use the os module's lseek function to 
set a file descriptor to a new offset position in a file. However, when 
running the code through the interpreter, I continue receiving a 
TypeError message:

Traceback (most recent call last):
   File "testseq.py", line 18, in ?
     os.lseek(somefile, someoffset, 1)
TypeError: an integer is required

I have already checked the type of someoffset and it is indeed an 
integer. I have also read the library reference to make sure that no new 
arguments to the function have been created. What else is needed for 
this statement to function correctly, as I am passing a file descriptor, 
an integer, and an integer, as the library reference requires. TIA.

Michael Mayhew