Compiled code versus source code The vast majority of the packages found on public repositories such as npm for JavaScript, PyPI for Python, and RubyGems for Ruby consist of open-source code files ...

A compiler is a computer program that translates from one format to another, most often from a high-level computer language to byte code and machine code. Compilers come in a number of variations ...

The “w+” tells Python that we are writing to a new file. If the file already exists, then that file is overwritten. If the file doesn’t already exist, then it will be created.

The compiled Python interpreter as WebAssembly. JavaScript from Emscripten that emulate system capabilities, such as a virtual file system, that the Python interpreter expects.