Find versions of packages installed in TouchDesigner

find_versions.py

from pkgutil import iter_modules
from pprint import pprint
from importlib import import_module
from importlib.metadata import version as version_il
from importlib.metadata import PackageNotFoundError


modules = list(iter_modules())
packages = filter(lambda x: x.ispkg, modules)
packages = list(packages)  # The filter needs to be iterated more than once
packages = sorted(packages, key=lambda p: p.name)  # For my personal taste

# Problem counters
cant_import_count = 0
no_version_count = 0

cant_import = "Can't import"
no_version = "No __version__"

def find_version(package_name):
    try:
        module = import_module(package_name)
    except ModuleNotFoundError as e:
        if package_name.startswith("_"):
            return find_version(package_name.replace("_", ""))
        else:
            print(package_name)
            raise

    return getattr(module, "__version__")


longest_package_name = max(packages, key=lambda x: x.name)
# I don't expect anything longer coming from actual versions
longest_version = "No __version__"

for package in packages:
    relative_path = package.module_finder.path.split("Contents")[1]
    
    try:
        version = find_version(package.name)
    except AttributeError:
        version = no_version
        no_version_count += 1
    except (PackageNotFoundError, ModuleNotFoundError):
        version = cant_import
        cant_import_count += 1


    package_name = package.name.ljust(20)
    version = version.ljust(len(longest_version) + 4)

    print(package_name,  version, relative_path)

print(f"Can't import: {cant_import_count}")
print(f"Can't find version: {no_version_count}")