Secret Recipes of the Python Ninja

How to do it...

1. First, we will create single_thread.py to give us a benchmark for comparison. For this example, we will be contacting a number of websites and calculating the time it takes to open a connection to all of them:

        import urllib.request        import urllib.error        import time        def single_thread_retrieval():            start_time = time.time()            urls = ["https://www.python.org",                     "https://www.google.com",                     "https://www.techdirt.com",                    "https://www.facebook.com",                    "https://www.ibm.com",                    "https://www.dell.com",                    "https://www.amd.com",                    "https://www.yahoo.com",                    "https://www.microsoft.com",                    "https://www.apache.org"]            try:                for url in urls:                    urllib.request.urlopen(url)            except urllib.error.HTTPError:                pass            return time.time() - start_time

• • As we will be contacting ...