EOFError when input() after print() in SSH console

Question

I got a strange behavior in my Python code. It runs fine in my Windows console

For example,

@cmd.exe : python file.py

Content of my file.py file

print("-------------------------- RANDOM STRING HERE! --------------------------------")
email = input()
print("-------------------------- RANDOM STRING HERE! --------------------------------")
name = input()
print("-------------------------- RANDOM STRING HERE! --------------------------------")
address = input()
print("-------------------------- RANDOM STRING HERE! --------------------------------")
print(email+name+address)

This same code doesn't work when I do:

curl ://filepath/file.py | sudo python3

in an a console under SSH. I already tried with PuTTY and Git Bash, but I am still getting the same error.

EOFError in SSH Console:

EOFError in SSH Console

I already tried to use sys.stdin, but it doesn't work as expected.

You are loading the script over stdin. Python has already read it all and there is nothing more available. — ephemient
– ephemient, Commented Apr 15, 2017 at 22:45
@ephemient searched and understood in someway how stdin works.. i still can't get the user's input under those consoles.. tried sys.stdin.read() => nope and sys.stdin.buffer.raw.read(100), works in cmd but nope via ssh.. (unlimited field and doesn't submit when pressing enter) .. Is there any way expected to work? — Yidir
– Yidir, Commented Apr 15, 2017 at 23:44

Peter Mortensen · Accepted Answer · 2017-07-08 08:02:27Z

2

No, really, you can't do that this way. Running

... | sudo python3

puts the script to the stdin so you can't use the stdin from that script any more.

But you can do it the other way round without a pipe using a temporary file:

curl ://filepath/file.py -o /tmp/script
sudo python3 /tmp/script

Or using process substitution (in Bash):

python3 <(curl ://filepath/file.py)

edited Jul 8, 2017 at 8:02

Peter Mortensen

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answered Apr 16, 2017 at 7:32

Jakuje

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2 Comments

Yidir Over a year ago

Makes sense! Partially worked using process substituion (doesn't work with sudo) returns for some reason: python3: can't open file '/dev/fd/63': [Errno 2] No such file or directory and (23) Failed writing body, temporary file doesn't work either resulting curl: (6) Could not resolve host: sudo curl: (6) Could not resolve host: python3 curl: (3) <url> malformed -- syntax error? Upvoted and i lack some reputation, Thanks @Jakuje !

Jakuje Over a year ago

Yes. Obviously the sudo closes all the additional file descriptors (which is a good security practice, but breaks this use case). Without sudo it can work.

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