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What is the best way to specify the location of Python within a script?
A. #!usr/bin/env bash
B. #!usr/bin/env python
C. #!usr/local/bin/python
D. #!usr/bin/python
E. #!/scriptname
Correct Answer: B
Explanation/Reference:
Explanation:
If you have several versions of Python installed, /usr/bin/env will ensure the interpreter used is the first one on your environment’s $PATH. The alternative would be to hardcode something like #!/usr/bin/python; that’s ok, but less flexible.
Reference:
http://stackoverflow.com/questions/2429511/why-do-people-write-usr-bin-env-python-on-the-first-line-of-a-python-script
