Trying to integrate Python with Docker. Getting error on input portion of code

Question

I have a very simple python script. I am trying to use it in a docker container.

Python file (computer.py)

import datetime
print("Welcome to virtual assistant.")
name = input("What is your name? ")
print("Welcome " + name)
def time():
print(datetime.datetime.now())
command = input("Would you like to know the time " + name + "?")
if command == "yes":
print(time())

And My docker file looks like this.(Docker)

FROM python:3

ADD computer.py /

CMD [ "python", "./computer.py" ]

Then I ran

docker build -t python-barcode .

Then

run python-barcode

I get this error

Traceback (most recent call last):
  File "./computer.py", line 4, in <module>
    name = input("What is your name? ")
EOFError: EOF when reading a line
Welcome to virtual assistant.
What is your name? %

It seems to run the code up untill I ask for input? Not even sure what would cause that. Any help would be greatly appreciated.

larsks · Accepted Answer · 2018-12-07 17:46:21Z

2

When you run a container with docker run, stdin is by default not connected, so anything that attempts to read interactive input will fail. You probably want to run:

docker run -it python-barcode

The -i leaves stdin connected, and the -t allocates a tty which is what you normally want to interactive input.

answered Dec 7, 2018 at 17:46

larsks

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2 Comments

Kash Over a year ago

Thank you that worked! Are the -i and -t just docker arguments? just so I can look up a comprehensive list.

larsks Over a year ago

That's correct; you can find those documented in the docker run reference.

bonaccorso.p · Accepted Answer · 2018-12-07 17:51:05Z

0

you shold run the container in interactive mode with the -i and -t

docker run -it python-barcode

answered Dec 7, 2018 at 17:51

bonaccorso.p

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