/usr/bin/env: ‘python’: no such file or directory

Question

I have python 3 and python 2.7 installed in my system.

I am a newbee and I tried to run file :

~/usr/bin/env python 2.7 

But when I try to run the file it give me an error :

~/usr/bin/env python 2.7 No such file or directory

How can I check my default python version?

How can I run the file?

How to run the file without changing my default python version?

Answer 1

You can create an alias to 2.7 as 3  :

sudo ln -s /usr/bin/python2.7 /usr/bin/python3

To check your default python version use the command:

python --version

You may check your python executable, versus the location of lib site-packages.

Your site-packages should be in the directory:

~/usr/lib/python2.7/site-packages

And your executable could be in the directory:

~/usr/bin

To check where it is finding the executables run the command:

which python
which python2.7
which pythohn3