Why is python console not picking up pyenv global version?

Question

ishandutta2007@MacBook-Pro:~$ python --version

 Python 2.7.15 

 ishandutta2007@MacBook-Pro:~$ pyenv versions

  system 2.7 * 3.7.0 (set by /Users/ishandutta2007/.pyenv/version) 

 ishandutta2007@MacBook-Pro:~$ pyenv global 3.7.0
 ishandutta2007@MacBook-Pro:~$ pyenv versions

  system 2.7 * 3.7.0 (set by /Users/ishandutta2007/.pyenv/version) 

ishandutta2007@MacBook-Pro:~$ python --version

 Python 2.7.15 

ishandutta2007@MacBook-Pro:~$ python

 Python 2.7.15 (default, Jun 17 2018, 12:46:58) [GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin Type "help", "copyright", "credits" or "license" for more information. 

Answer 1

you need to add:

eval "$(pyenv init -)" 

in your .bash_profile or .bashrc

Answer 2

The issue was I needed to add this in my bash_profile

if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init -)"
fi