java to python q's

[Shaun]

(from the java code below)
1) whats the differance between public and private and what is the
equivalent in python?
2) how do i declare the variable nvsequence of type NvSequence in python?
3) is this.id = id; the same as self.id = id, in python?

public class Message
{
 private int id;
 private int subId;
 private NvSequence nvSequence;

 file://overloaded constructor 1
 file://sets up member vars id, subId of type int and nvSequence of type
NvSequence
 public Message(int id, int subId, NvSequence nvSequence)
 {
  this.id = id;
  this.subId = subId;

  this.nvSequence = nvSequence;
 }

4)in java:
public Message(int id, int subId)
 {
  this.id = id;
  this.subId = subId;

  this.nvSequence = null;
 }
how do i set this.nvSequence to null in python?
is it:
 def msg(id,subid,nvSequence=None)?

5)how/what modules do i use to find the index of the first/second integer in
a string?

=====================
Shaun Hogan
Interactive Enterprise Ltd.
alt. E-mail : shaun_hogan at yahoo.com
The University of Limerick Rollerhockey Club
URL: http://www.csn.ul.ie/~dek/ulrhc
Phone: +353 86 8342529