new_contents: from prometheus_client import start_http_server, Summary, \
  	Counter, Gauge, Histogram
  import time
  import sys
  
  requests = Counter('requests_total', 'Total requests', ['type', 'agent'])
  requests.labels(type='fetch', agent='prometheus').inc()
  requests.labels(type='store', agent='json').inc()
  requests.labels(type='oneline', agent='docker').inc()
  
  histogram = Histogram('request_latency_seconds', 'Sample histogram')
  histogram.observe(4.7)
  
  queue = Gauge('queue_size', 'Sample Gauge of queue size')
  queue.set(100)
  queue.dec(10)
  
  summary = Summary('summary_requests', 'Sample summary of requests')
  summary.observe(4.7)
  
  
  if __name__ == '__main__':
  	start_http_server(8000)
  	try:
  		time.sleep(1000)
  	except:
  		sys.exit(0)
subject: Add prometheus_client acme client