What steps will reproduce the problem?
1. Reading any STDF with test.py
2.
3.

What is the expected output? What do you see instead?
-Expect to see valid HEAD_NUM & SITE_NUM for PIR.
-SITE_NUM in PIR displays as None.

What version of the product are you using? On what operating system?
stdfparser-1.0.2, Windows 7

Please provide any additional information below.
Error is due to function "_get_Un" in stdfparser.py. When reading format "U1", 
function returns None if buffer length is < 2.

Workaround/Fix.
Edit line 315 to:
    if len(buf) < 1:

What steps will reproduce the problem?
1. Run test.py on an STFD that I'm not going to supply.
2.
3.

What is the expected output? What do you see instead?

Traceback (most recent call last):
  File "test.py", line 33, in <module>
    do()
  File "test.py", line 31, in do
    x.parse(sys.argv[1:])
  File "stdfparser.py", line 225, in parse
    self.process(buf, (typ, sub))
  File "stdfparser.py", line 173, in process
    self.data[i[0]], buf = self.get_parse_func(tmp)(tmp, buf)
  File "stdfparser.py", line 472, in _get_Kx
    item, buf = func(item_format, buf)
  File "stdfparser.py", line 295, in _get_Nn
    return (r, buf[1])
IndexError: string index out of range


What version of the product are you using? On what operating system?

stdfparser-1.0.2
Python 2.6.6
Linux

Please provide any additional information below.

In the function _get_Nn, it's clear it doesn't handle the case len(buf) == 1.