How to run __init__.py

[engFelipeMonteiro]

I was studing the library, and saw this segment of code inside init.py.

.... if __name__ == '__main__': c = Counter('cc', 'A counter') c.inc() g = Gauge('gg', 'A gauge') g.set(17) s = Summary('ss', 'A summary', ['a', 'b']) s.labels('c', 'd').observe(17) h = Histogram('hh', 'A histogram') h.observe(.6) start_http_server(8000) import time while True: time.sleep(1) 

How do I run this code in python3?
I want to run directly to make some test.