Why learn Python for data analysis?

Python (an interpreted language) has gathered a lot of interest recently as a preferred choice of language for data analysis. Here are some reasons in favour of learning Python:

It is open source – free to install and use
Python has an awesome online community - latest algorithms come to Python in a matter of days
It is easy to learn
It can become a common language for data science and production of web-based analytics products

Which of the following is not a reason to learn Python for data analysis?

Possible Answers

Python is easy to learn.
Python is an interpreted language, so computation times can be higher than compiler based languages in some cases.
Python has good libraries for data science.
It is a production ready language (from web & software perspective).