Python also became easy to extend, you even had great tools like Swig http://swig.org/ http://swig.org/. Today some of main Python libraries are in C, speciall

Python also became easy to extend, you even had great tools like Swig http://swig.org/ http://swig.org/. Today some of main Python libraries are in C, specially the ones that need speed, like numpy, pandas and all the Data Science eco-system. Desktop user interfaces became less important with the Web. Python also got a good regexp engine. Its legibility, batteries included and interactive shell beat them all.