Python winreg looping through sub-keys

Question

I\'m able to successfully retrieve the 5 sub-keys from my windows 7 machine registry hive \"HKEY_LOCAL_MACHINE\" with the code below.

from _winreg import *

         


        

Answer 1

Just want to add a perhaps more pythonic solution.

from _winreg import *
from contextlib import suppress
import itertools

def subkeys(path, hkey=HKEY_LOCAL_MACHINE, flags=0):
    with suppress(WindowsError), OpenKey(hkey, path, 0, KEY_READ|flags) as k:
        for i in itertools.count():
            yield EnumKey(k, i)

You can now access the keys as expected

for key in subkeys(r'path\to\your\key'):
    print key

For python versions < 3.4 that lack suppress(), I recommend adding it to your project:

from contextlib import contextmanager

@contextmanager
def suppress(*exceptions):
    try:
        yield
    except exceptions:
        pass

Note: If you have trouble reading some values you might be reading from the wrong registry view. Pass KEY_WOW64_64KEY or KEY_WOW64_32KEY to the flags parameter). Using OpenKey() as context manager was introduced in python 2.6.