README.md

Python bytecode

Exercise

Navigate to the correct folder

cd /workspaces/esd-2024-jit-compiler/workshop/python/bytecode_conversion

Step 1: Run .py file

python3 simple_calculator.py

See the output.

Step 2: Compile to Bytecode

python3 -m py_compile simple_calculator.py

This will create a .pyc file in a directory named pycache.

Step 3: Run the .pyc (compilation file)

python3 __pycache__/simple_calculator.cpython-312.pyc

fyi: 3.12 is the cpython version.

Is the output the same as running the .py file?

Step 4: Add inspection to the simple_calculator.py file

add in .py file on top:

import dis

and in the bottom of the .py file add:

dis.dis(SimpleCalculator)

Step 5: See the python bytecode

Run the .py file again

python3 simple_calculator.py > output-python.txt

fyi: > is called 'output redirection'

Questions:

1. Is the Python bytecode statically or dynamically typed?
2. Is the Python bytecode (already) optimised by a JIT?

Step 6: Compare both outputs

Compare the Python bytecode with the Java bytecode! Question: Name 2 differences.

Back to challenges overview