Print statements not working when serve_forever() is called?

Question

I have the following small python script to run a local server for testing some html:

print(\'opened\')

from http.server import HTTPServer, SimpleHTTPReques         


        

Answer 1

That maybe related with the "infamous" need to flush in order for your prints to work!

Related reading material:

• Theoretical knowledge on the subject
• How to flush output of Python print?, python `print` does not work in loop, as suggested by @Kerorin:

---

Because you are using Python 3 and since version 3.3 you don't have to follow the solutions given in the above great answers.
The print build-in type has an option flush which by default is False. Do:

print('opened', flush=True)

from http.server import HTTPServer, SimpleHTTPRequestHandler

server_address = ('', 8000)
httpd = HTTPServer(server_address, SimpleHTTPRequestHandler)

print('Listening at https://127.0.0.1:8000/ . . .', flush=True)
httpd.serve_forever()

---

PS: This is a confirmed solution on a similar issue