get_windows_software_versions.py

import csv
from collections import namedtuple

# https://pypi.python.org/pypi/winregal/1.0.1
from winregal import RegKey, RegValue


def get_component_versions():
    Row = namedtuple('Component', 'name md5_hash arch language version')
    path = r'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\Packages'
    with RegKey(path) as key:
        for item in key:
            if isinstance(item, RegKey):
                with item:
                    row = item.to_dict().get('InstallName').split('~')
                    try:
                        yield Row(*row)
                    except TypeError:
                        continue

def get_software_versions():
    path = r'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall'
    Row = namedtuple('Software', 'name version')
    with RegKey(path) as key:
        for item in key:
            if isinstance(item, RegKey):
                with item:
                    result = item.to_dict()
                    if all(map(lambda x: x in result, ['DisplayName', 'DisplayVersion'])):
                        yield Row(result['DisplayName'], result['DisplayVersion'])


def write_csv(fname, iterable):
    with open(fname, 'wt') as fd:
        writer = csv.writer(fd, delimiter=',')
        component = next(iterable)
        fields = component._fields
        writer.writerows([fields, component])
        for component in iterable:
            writer.writerow(component)

# component: list(get_component_versions())
# software list(get_software_versions())

# write_csv(r'C:\Users\admin\Desktop\components.txt', get_component_versions())
# write_csv(r'C:\Users\admin\Desktop\software.txt', get_software_versions())