script running python --version command is printing it too early

I have a error handler script that shows my important environment variables when I fail (I added a few Enter in the echo string for easier reading, the full line is added at the end of the question):

echo -e "--- failed at line $1 in function $2\nvirtual env = 
$(echo ${VIRTUAL_ENV})\ncurrent dir = ${PWD}\nbranch = $(git status | head
 -1)\ngit commit = $(git log -1 | tr '\n''\t')\npip version = $(pip -
V)\nPy version = $(python --version)\nhostname = $(logname)@$(hostname)\n"

I get a good result, except for the python --version part:

Python 2.7.12  <--- why is this here?
--- failed at line 186 in function my_func
virtual env = 
current dir = /home/bla/blabla/foo
branch = On branch goo
git commit = commit ### Author: ... 
pip version = pip 18.1 from /usr/local/lib/python2.7/dist-packages/pip-18.1-py2.7.egg/pip (python 2.7)
Py version =  <----- instead of here
hostname = X@Y

The actual function of mine doesn't use echo right away. I also call tput setaf && tput sgr0 to modify the colors. The python line (the 1st) is not colored, while the others are...

"--- failed at line $1 in function $2\nvirtual env = $(echo ${VIRTUAL_ENV})\ncurrent dir = ${PWD}\nbranch = $(git status | head -1)\ngit commit = $(git log -1 | tr '\n''\t')\npip version = $(pip -V)\nPy version = $(python --version)\nhostname = $(logname)@$(hostname)\n"