How do I activate a conda env in a subshell?

Question

I\'ve written a python program. And if I have a shebang like this one:

#!/usr/bin/python

and I make the file executable with:

Answer 1

In your script, change...

#!/usr/bin/python

...to:

#!/usr/bin/env python

The python used by an activated conda environment is ${CONDA_PREFIX}/bin/python and not /usr/bin/python

Notice the difference?

(root) ~/condaexpts$ which python
/home/ubuntu/condaexpts/m3/bin/python

(root) ~/condaexpts$ /usr/bin/env python
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul  2 2016, 17:53:06) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 

(root) ~/condaexpts$ source deactivate

~/condaexpts$ which python
/usr/bin/python

~/condaexpts$ /usr/bin/env python
Python 2.7.6 (default, Oct 26 2016, 20:30:19) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>