I started using Python a couple of days ago - here are a few
questions:

* Doesn't the __main__() method automatically execute when I run my
python program?
* Only when I do an import of my test.py file within python and then
run test.__main__() I can see where my bugs are. Is this correct?
(right now this is my only way of running my python program and see
where I have problems)
* Once I've done an import and then I wish to make a change to the
file I've imported I have to quit Python, restart and import that
module again in order for the module to be refreshed. Is there no "re-
import" ?
* Finally, could someone tell me why I'm having problems with the
small module below?
  - Python pretends I provide chassis_id() with three parameters, even
though I clearly only provide it with two - why?

Thanks!

#!/usr/bin/python
import scapy
import struct

class lldp_class:
        def __init__(self):
                self.chassis_id_tlv = None

        def chassis_id(subtype, chassis_info):
                if subtype == 4:
                        chassis_data = struct.pack("!B",chassis_info)
                subtype_data = struct.pack("!B",subtype)
                self.chassis_id_tlv = subtype_data + chassis_data

def __main__():
        p = lldp_class()
        p.chassis_id(4, "01:80:C2:00:00:0E")
        payload = p.chassis_id_tlv
        ether = scapy.Ether(dst="01:02:03:04:05:06")
        fullpayload = ether + payload
        sendp(fullpayload)

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