-The main takeaway is that LPython/LFortran generate fast code by default. Our benchmarks show that it's straightforward to write high-speed LPython code. We hope to raise expectations that LPython output will be in general at least as fast as the equivalent C++ code. Users love Python because of its many productivity advantages: great tooling, easy syntax, and rich data structures like lists, dicts, sets, and arrays. Because any LPython program is also an ordinary Python program, all the tools -- debuggers and profilers, for instance -- just work. Then, LPython delivers run-time speeds, even with rich data structures at least as short as alternatives in most cases. In the future, LPython will allow user-defined implementations of data structures for those rare cases where the versions shipped with LPython are not good enough.
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