Comparing Python to Other Languages
https://bjpelc.wordpress.com/2015/01/10/yet-another-language-speed-test-counting-primes-c-c-java-javascript-php-python-and-ruby-2/
You always have to balance development time and run time.
You can always prototype in python, and pass it along to someone else to do in C or C++ if performance needs require. I hate doing things twice.