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Python 2 and 3, are the bytecode (pyo & pyc) backward compatible?
can i execute python 2 pyo & pyc file with python 3?
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A PYO file represents the bytecode file that is read/written when any optimization level is specified (i.e., when -O or -OO is specified).
pyc files are created by the Python interpreter when a . py file is imported. They contain the "compiled bytecode" of the imported module/program so that the "translation" from source code to bytecode (which only needs to be done once) can be skipped on subsequent imports if the . pyc is newer than the corresponding .
py files contain the source code of a program. Whereas, . pyc file contains the bytecode of your program.
. pyc: The compiled bytecode. If you import a module, python will build a *. pyc file that contains the bytecode to make importing it again later easier (and faster).
No, they are usually not even compatible between minor releases (e.g. 2.6 vs 2.7).
However, since you usually have the .py files, too, python will automatically compile them for the currently used version.
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