fix examples for freeze_support() issue on windows (#2741)

Co-authored-by: Adam Hopkins <adam@amhopkins.com>

examples/amending_request_object.py

@@ -25,5 +25,5 @@ def key_exist_handler(request):
 
     return text("num does not exist in request")
 
-
-app.run(host="0.0.0.0", port=8000, debug=True)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000, debug=True)

examples/blueprint_middlware_execution_order.py

@@ -50,4 +50,5 @@ def pop_handler(request):
 
 app.blueprint(bp, url_prefix="/bp")
 
-app.run(host="0.0.0.0", port=8000, debug=True, auto_reload=False)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000, debug=True, auto_reload=False)

examples/blueprints.py

@@ -37,4 +37,5 @@ app.blueprint(blueprint)
 app.blueprint(blueprint2)
 app.blueprint(blueprint3)
 
-app.run(host="0.0.0.0", port=9999, debug=True)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=9999, debug=True)

examples/http_redirect.py

@@ -69,5 +69,5 @@ async def runner(app: Sanic, app_server: AsyncioServer):
         app.is_running = False
         app.is_stopping = True
 
-
-https.run(port=HTTPS_PORT, debug=True)
+if __name__ == "__main__":
+    https.run(port=HTTPS_PORT, debug=True)

examples/limit_concurrency.py

@@ -39,4 +39,5 @@ async def test(request):
         return json(response)
 
 
-app.run(host="0.0.0.0", port=8000, workers=2)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000, workers=2)

examples/override_logging.py

@@ -20,4 +20,5 @@ def test(request):
     return text("hey")
 
 
-app.run(host="0.0.0.0", port=8000)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000)

examples/request_timeout.py

@@ -20,4 +20,5 @@ def timeout(request, exception):
     return response.text("RequestTimeout from error_handler.", 408)
 
 
-app.run(host="0.0.0.0", port=8000)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000)

examples/run_async_advanced.py

@@ -35,27 +35,27 @@ async def after_server_stop(app, loop):
 async def test(request):
     return response.json({"answer": "42"})
 
-
-asyncio.set_event_loop(uvloop.new_event_loop())
-serv_coro = app.create_server(
+if __name__ == "__main__":
+    asyncio.set_event_loop(uvloop.new_event_loop())
+    serv_coro = app.create_server(
         host="0.0.0.0", port=8000, return_asyncio_server=True
-)
-loop = asyncio.get_event_loop()
-serv_task = asyncio.ensure_future(serv_coro, loop=loop)
-signal(SIGINT, lambda s, f: loop.stop())
-server: AsyncioServer = loop.run_until_complete(serv_task)
-loop.run_until_complete(server.startup())
+    )
+    loop = asyncio.get_event_loop()
+    serv_task = asyncio.ensure_future(serv_coro, loop=loop)
+    signal(SIGINT, lambda s, f: loop.stop())
+    server: AsyncioServer = loop.run_until_complete(serv_task)
+    loop.run_until_complete(server.startup())
 
-# When using app.run(), this actually triggers before the serv_coro.
-# But, in this example, we are using the convenience method, even if it is
-# out of order.
-loop.run_until_complete(server.before_start())
-loop.run_until_complete(server.after_start())
-try:
+    # When using app.run(), this actually triggers before the serv_coro.
+    # But, in this example, we are using the convenience method, even if it is
+    # out of order.
+    loop.run_until_complete(server.before_start())
+    loop.run_until_complete(server.after_start())
+    try:
         loop.run_forever()
-except KeyboardInterrupt:
+    except KeyboardInterrupt:
         loop.stop()
-finally:
+    finally:
         loop.run_until_complete(server.before_stop())
 
         # Wait for server to close