pyodide-pack | Python package bundler for the web

Pyodide-pack requires Python 3.10+ as well as NodeJS,.
Create file with the code of your Python application running in the web. As example we will take, examples/scikit-learn/app.py. This application can run with Pyodide, and will need to download around 10.5 MB of packages, including numpy and pandas in addition to ~7MB for CPython with stdlib. Create the package bundle,. which would produce the following output. Load your Python web application with,.
Create file with the code of your Python application running in the web. As example we will take, examples/scikit-learn/app.py app.py import pandas as pd # noqa pd.DataFrame(range(10)) This application can run with Pyodide, and will need to download around 10.5 MB of packages, including numpy and pandas in addition to ~7MB for CPython with stdlib.
Create the package bundle, pyodide pack examples/pandas/app.py which would produce the following output Running pyodide-pack on examples/pandas/app.py Note: unless otherwise specified all sizes are given for gzip compressed files to be representative of CDN compression. Loaded requirements from: examples/pandas/requirements.txt Running the input code in Node.js to detect used modules.. [..] Done input code execution in 11.1 s Detected 8 dependencies with a total size of 10.54 MB (uncompressed: 40.99 MB) In total 425 files and 54 dynamic libraries were accessed. Packing.. ┏━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━┓ ┃ No ┃ Package ┃ All files ┃ .so libs ┃ Size (MB) ┃ Reduction ┃ ┡━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━━┩ │ 1 │ distutils.tar │ 101 → 0 │ 0 → 0 │ 0.26 → 0.00 │ 100.0 % │ │ 2 │ numpy-1.22.3-cp310-cp310-emsc… │ 418 → 94 │ 19 → 13 │ 3.63 → 2.49 │ 31.4 % │ │ 3 │ pandas-1.4.2-cp310-cp310-emsc… │ 469 → 283 │ 42 → 41 │ 5.11 → 4.50 │ 12.0 % │ │ 4 │ pyparsing-3.0.7-py3-none-any.… │ 17 → 0 │ 0 → 0 │ 0.10 → 0.00 │ 100.0 % │ │ 5 │ python_dateutil-2.8.2-py2.py3… │ 25 → 15 │ 0 → 0 │ 0.24 → 0.22 │ 9.4 % │ │ 6 │ pytz-2022.1-py2.py3-none-any.… │ 612 → 5 │ 0 → 0 │ 0.43 → 0.02 │ 96.1 % │ │ 7 │ setuptools-62.0.0-py3-none-an… │ 213 → 0 │ 0 → 0 │ 0.76 → 0.00 │ 100.0 % │ │ 8 │ six-1.16.0-py2.py3-none-any.w… │ 6 → 1 │ 0 → 0 │ 0.01 → 0.01 │ 18.5 % │ └────┴────────────────────────────────┴───────────┴──────────┴─────────────┴───────────┘ Wrote pyodide-package-bundle.zip with 7.36 MB (30.2% reduction) Running the input code in Node.js to validate bundle.. Validating and benchmarking the output bundle.. ┏━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Step ┃ Load time (s) ┃ Fraction of load time ┃ ┡━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━┩ │ loadPyodide │ 2.59 │ 24.4 % │ │ fetch_unpack_archive │ 0.27 │ 2.5 % │ │ load_dynamic_libs │ 6.21 │ 58.5 % │ │ import_run_app │ 1.56 │ 14.7 % │ │ TOTAL │ 10.63 │ 100 % │ └──────────────────────┴───────────────┴───────────────────────┘ Bundle validation successful.
Load your Python web application with, let pyodide = await loadPyodide({fullStdLib: false}); await pyodide.runPythonAsync(` from pyodide.http import pyfetch response = await pyfetch("<your-server>/pyodide-package-bundle.zip") await response.unpack_archive(extract_dir='/') `) await pyodide.pyimport('pyodide_pack_loader').setup();