Plenary Diamond Keynote: Why Python Sucks (But Works Great For Us)
There aren't enough Python coders, but on average they're of higher quality.
The company prefers smart, open-minded coders over Python zealots.
Sometimes switching to C++ for speed is worth it. In one case, they had to process 10 billion records. They gave up after waiting 15 hours for the Python version to finish. After rewriting it in C++, they were done in 30 minutes. This makes sense when the C++ code doesn't take too long to write.