CODEWITHSUNDEEP
pythoncommand-linesudonameerror
yang5
yang5

Reputation: 1235

While running python script as another user (with sudo), input string taken as variable name

I have a simple python script, test.py:

x = input("Enter string")
print("Entered str: ", x)

I want to run the script as another user; lets call him scratch:

sudo -u scratch python test.py

The program waits for the console input. When I enter "abc", I encounter the following error:

Enter stringTraceback (most recent call last):
  File "test.py", line 1, in <module>
    x = input("Enter string")
  File "<string>", line 1, in <module>
NameError: name 'abc' is not defined

I am not sure about the reason behind this and the fix for it.

Upvotes: 0

Views: 297

Answers (2)

kindall
kindall

Reputation: 184270

input behaves differently in Python 2.x and 3.x. The other account has Python 2.x set as its default, or has a Python 2.x executable first in its PATH. Your usual account, on the other hand, is using a Python 3.x executable. Probably the best way to do this is to use the full path to the Python executable you want to use i the script's "shebang" line. For example:

#!/usr/bin/python3

(This path may need adjusting for your system. Try typing which python in your account to see what it's using.)

Upvotes: 2

shaktimaan
shaktimaan

Reputation: 12092

The issue is the code is using input() in a Python 2.7 environment (the other users' default python version probably). Try using raw_input() instead.

input() in a 2.7 behaves as a raw_input() followed by an exec() which is why it throws the NameError.

The code would run fine on a Python 3.x interpreter.

Upvotes: 1

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