can't import Contacts

This code crashes without catching Exception:

def build(self):
    try:
        return Label(text=str(dir(autoclass('android.provider.ContactsContract.Contacts'))).replace(' ', '\n'))
    except Exception as ex:
        return Label(text=str(ex).replace(' ', '\n'))

this case

def build(self):
    try:
        contract = autoclass('android.provider.ContactsContract')
        return Label(text=str(dir(contract.Contacts)).replace(' ', '\n'))
    except Exception as ex:
        return Label(text=str(ex).replace(' ', '\n')) 

catching Exception type object ‘android.provider.ContactsContract’ has no attribute ‘Contacts’

but I expect that such a class exists: http://developer.android.com/intl/ru/reference/android/provider/ContactsContract.Contacts.html

[pythonic64]

Try importing Contacts directly, like:

Contacts = autoclass('android.provider.ContactsContract$Contacts')

‘$’ is for accessing nested classes.

[Intasir]

how can i Access full contact list ,can anyone help??