sitecustomize.py

# Install our custom import hook, which imports tar.xz bundles with so in them.
try:
    import cowasm_importer
    cowasm_importer.init()
except ModuleNotFoundError:
    # python-wasm sometimes is started during the build process before cowasm_importer
    # is installed.  That's the one case where this is safe to silently ignore.
    pass

# Revert strange change to Python: https://discuss.python.org/t/int-str-conversions-broken-in-latest-python-bugfix-releases/18889
# This was a (potential) security issue for webservers, which isn't relevant for python-wasm.
import sys

sys.set_int_max_str_digits(0)

# This is very convenient in the context of WASM, where security constraints are different.
sys.path.append('.')