input: Write a python function to generate a load testing report for a given website.
  assert generate_report('http://example.com')['URL'] == 'http://example.com'
  assert isinstance(generate_report('http://example.com')['StatusCode'], int)
  assert isinstance(generate_report('http://example.com')['Duration'], float)
output: def generate_report(url):
      import requests
      import time
  
      report = {}
      report['URL'] = url
      
      start_time = time.time()
      response = requests.get(url)
      end_time = time.time()
      
      report['StatusCode'] = response.status_code
      report['Duration'] = end_time - start_time
  
      return report