How to get the Group ID from SkPy using Python?

Here is the code that I have tried:

username = "example@example.com"
password = "password@Password"

from skpy import Skype

slogin = Skype(username, password)

contact = slogin.contacts

for i in contact:
    print(i, "\n")

I have received the following output:

[SkypeContact]
Id: contactid
Name:Name
Location: loc
Language: EN
Avatar: picture
Mood: 
Phones: 
Birthday: 
Authorised: True
Blocked: False
Favourite: False

[SkypeContact]
Id: echo123
Name: Echo / Sound Test Service .
Location: GB
Language: EN
Avatar: url
Mood: None
Phones:
Birthday: None
Authorised: True
Blocked: False
Favourite: False

But there is a group that I have join. How I can get the ID of that group using SkPy?
Please let me know your suggestions.