parse-ing? how does it work?

[Shaun]

i put this.........

> import string
>
> class MessageFormatError:
>     def __init__(self, value):
>         self.value = value
>     def __str__(self):
>         return self.value
>
> class Message:
>     def __init__(self, messageStr):
>         (idStr, subIdStr, nvSeqStr) = string.split(messageStr, None, 2)
>
>         try:
>             self.id = int(idStr)
>             self.subId = int(subIdStr)
>         except ValueError:
>             raise MessageFormatError("Can't parse: %s" % messageStr)
>
>         self.nvSeq = parseNvSeq(nvSeqStr)
>
>     def parseNvSeq(nvSeqStr):
>         if len(nvSeqStr) == 0:
>             return None
>         else:
>             return nvSeqStr # decode here...
>

 ......code in a module called findx.py, and heres what happened

>>> from findx import *
>>> m = Message("123 234 This is an nvSeqStr.")

Traceback (innermost last):
  File "<pyshell#1>", line 1, in ?
    m = Message("123 234 This is an nvSeqStr.")
  File "C:\Program Files\Python\Tools\idle\findx.py", line 19, in __init__
    self.nvSeq = parseNvSeq(nvSeqStr)
NameError: parseNvSeq
>>>

ive tried moving and changing loads of ways but i cant get it to work,
parseNvSeq seems to be the main problem, would
ye be able to tell me whats wrong? please..
thanks
Shaun

_____________________________________________________
my original problem:
ok,
i have variables ,id ,subId, nvSeqStr
a message will be passed in like...(some code  & pseudo code below)
forgive me im still a newbie and i cant grasp this stuff at all....


class message:
    import string

    def __init__(self, id, subId, nvSequence):
        self.id=id
        self.subId=subId
        self.nvSequence=nvSequence()

         #overloaded constructor 1
 #sets up member vars id and subId subId of type int
    def __init__(self, id, subId, nvSequence=None):
        self.id = id
        self.subId = subId
        self.nvSequence = nvSequence

def Message(StringMsg):

# what i want to do is,

1) find the index of the first integer in the string StringMsg
2)          #on an error throw a  format exception
3)    save int in var id

4) find the index of the second integer in the string StringMsg
            #on an error throw a  format exception
    save int in var subId

5) keep the rest of the string in var nvSeqStr

6)    if nvSeqStr is not empty
7)        try
            decode it
                    #on an error throw a  format exception
8)        else
            set nvSeqStr to null
                    #on an error throw a  format exception




=====================
Shaun Hogan
Interactive Enterprise Ltd.
alt. E-mail : shaun_hogan at yahoo.com
Phone: +353 86 8342529

The University of Limerick Rollerhockey Club
URL: http://rollerhockey.csn.ul.ie