Why is Bitcoin coded C++?

The most important reason is that the original Satoshi codebase was written in C++ . A system like Bitcoin has extremely strong requirements about consistency in behaviour: all nodes on the network must accept and reject the exact same blocks, or we risk a fork.

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Can smart contracts be written in Python?

SmartPy is based on Python 3 language and requires Python code syntax . Python developers will feel at home when starting to code smart contracts with SmartPy. However, note that although it is possible to import Python libraries through the import directive, some features will only work in the development environment.

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