How to run a python 3.4 script as an executable?

Question

Say, I have a python script named hello.py, which I run on mac as:

$ python hello.py 

What do I need to do to run it as:

$ hello 

• Avinash Raj: You need to create alias for the above command in bash_aliases file.
• tripleee: possible duplicate of how to run python script without typing 'python ...'

Answer 1

Add a "shebang" to the top of the file to tell it how to run your script.

#!/usr/bin/env python

Then you need to mark the script as "executable":

chmod +x hello.py

Then you can just run it as ./hello.py instead of python hello.py.

To run it as just hello, you can rename the file from hello.py to hello and then copy it into a folder in your $PATH.

Answer 2

1. add the following line at the beginning of the script:

#!/usr/bin/env python

2. rename hello.py to hello

3. change the script to be executable: chmod 755 hello