Why Python is Slow: Looking Under the Hood
    Dynamic typing makes Python easier to use than C

I disagree with the implications. The main reasons Python is easier to use is independent of type system. Not having to manually manage memory, for example! Overall it is a higher-level language, whereas C is designed for maximum performance.Dynamic typing is probably preferable to a 40 year old type system. But Python could be easier to use (catch bugs ahead of time!) and execute faster by adding a modern type system. Optional typing (like TypeScript or Facebook's new PHP implemntation) would probably be appropriate.