Make HelloWorld python script executable

Question

I am trying to make a python script executable. The script is an testHelloWorld.py

#!/usr/bin/env python
print 'Hello World'

I have made it executable by running

chmod +x testHelloWorld.py

$ python testHelloWorld.py prints "Hello World". But $ ./testHelloWorld.py doesn't do anything. What am I missing here? I am using a Mac Os X device and its running Python 2.7.5.

I have gone through the answers for earlier questions and have checked for mistakes, but still no luck. This is one such similar post - how to make python script self-executable

Hmm I don't know what you're missing because i've just replicated this and it works fine. What happens if you type which python and which env. Also try env python and check that it opens a python interpreter for you — Ewan
– Ewan, Commented Jun 17, 2014 at 15:00
What happens when you replace the first line with #!/usr/local/bin/python? — cchristelis
– cchristelis, Commented Jun 17, 2014 at 15:01
Run /usr/bin/env python in bash. Does it start python or give you an error? — Magnun Leno
– Magnun Leno, Commented Jun 17, 2014 at 15:02
/usr/bin/env python is not a valid binary directory. Here you should write path to python interpreter binary file — Maciej
– Maciej, Commented Jun 17, 2014 at 15:08

AstroCB · Accepted Answer · 2015-03-01 06:05:25Z

7

On my mac:

#! /usr/bin/python
print 'Hello world'

Then

chmod +x <filename>.py

and finally

$ ./<filename>.py

gives me...

Hello world

So it is just the first line. Change to #! /usr/bin/python

edited Mar 1, 2015 at 6:05

AstroCB

12.4k20 gold badges59 silver badges75 bronze badges

answered Jun 17, 2014 at 15:23

brechmos

1,3161 gold badge11 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

11 Comments

deepng Over a year ago

Tried it, still no luck. I have tried it on a MacPro and a Macbook, and got the same result. Does anyone think it might be related to the env setup? if yes, what might be the problem.

brechmos Over a year ago

Really?? Huh. So you have a file called something.py and in it is exactly what I put in the first code section above. (with the /usr/bin/python). What is the output of which python?

deepng Over a year ago

$ which python /usr/bin/python $ which env /usr/bin/env

deepng Over a year ago

This script works fine on my linux desktop when I run it as an executable.

brechmos Over a year ago

When you say (above) "it doesn't do anything" does it literally do nothing? It just returns with no errors etc? Does it hang and you have to ctl-c it? What about if you do sudo ./<filename>.py? (You don't want to do sudo generally.) Is it a permissions issue? Super confused. Have you tried this in different directories (e.g., /tmp)? Is this an issue with that one directory?

|

Guiloga · Accepted Answer · 2017-02-16 11:56:15Z

0

Yo need to find where is located the python interpreter. Write:

which python

For me python interpreter is located at /usr/local/bin/python. So the hedaer on the python file should be that one (for me).

#!/usr/local/bin/python

After that change and making executable a python file by (chmod +x filename.py) you will be able to execute a python file by writing:

./filename.py

answered Feb 16, 2017 at 11:56

Guiloga

1

Comments

effo · Accepted Answer · 2018-03-07 22:20:50Z

-1

On OS X, try to replace ".py" extension by ".command" ! I don't remember why but it works for me.

answered Mar 7, 2018 at 22:20

effo

1

Collectives™ on Stack Overflow

Make HelloWorld python script executable

3 Answers 3

11 Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

11 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related