Bytecode

Compiled programs for a virtual machine rather than a real processor. The same file runs anywhere that virtual machine runs, which is why Java, Python and WebAssembly use it.

Formats

.CLASS

Java class file

One compiled Java class: a constant pool, fields and JVM bytecode.

.PYC

Compiled Python bytecode

Python’s cache of a compiled module: a version header and a code object.

.WASM

WebAssembly module

Portable bytecode for browsers and runtimes, in numbered sections.