[Event Hubs] Auth with SAS Token sample not working with Python2.7

[swathipil]

Describe the bug
Running sample azure-eventhub\samples\sync_samples\authenticate_with_sas_token.py produces an error on line 80.

Exception or Stack Trace

  File ".\authenticate_with_sas_token.py", line 80
    lambda pc, event: print(pc.partition_id, ":", event),
                          ^
SyntaxError: invalid syntax

To Reproduce
Install Python 2.7

pip install azure-eventhub
cd azure-sdk-for-python\sdk\eventhub\azure-eventhub\samples\sync_samples
python authenticate_with_sas_token.py

Code Snippet
lambda pc, event: print(pc.partition_id, ":", event),

Expected behavior
Expect it to print partition id and event, without an error.

Setup (please complete the following information):

• Python Version: Python 2.7
• SDK Version: azure-eventhub-5.2.1

Information Checklist
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