In a spirit of being helpful... :)
The code below (which I imagine every Windows programmer writes
sometime in their Python life) mimics the os.walk functionality, yielding
the key, subkeys, and values under a particular starting point in the
registry. The "if __name__ == '__main__'" test run at the bottom does
more-or-less what you were asking for originally, I think, converting
some name to some other name wherever it appears.
<module regwalk.py>
import _winreg
HIVES = {
"HKEY_LOCAL_MACHINE" : _winreg.HKEY_LOCAL_MACHINE,
"HKEY_CURRENT_USER" : _winreg.HKEY_CURRENT_USER,
"HKEY_CLASSES_ROOT" : _winreg.HKEY_CLASSES_ROOT,
"HKEY_USERS" : _winreg.HKEY_USERS,
"HKEY_CURRENT_CONFIG" : _winreg.HKEY_CURRENT_CONFIG
}
class RegKey:
def __init__ (self, name, key):
self.name = name
self.key = key
def __str__ (self):
return self.name
def walk (top):
"""walk the registry starting from the key represented by
top in the form HIVE\\key\\subkey\\..\\subkey and generating
key, subkey_names, values at each level.
key is a lightly wrapped registry key, including the name
and the HKEY object.
subkey_names are simply names of the subkeys of that key
values are 3-tuples containing (name, data, data-type).
See the documentation for _winreg.EnumValue for more details.
"""
if "\\" not in top: top += "\\"
root, subkey = top.split ("\\", 1)
key = _winreg.OpenKey (HIVES[root], subkey, 0, _winreg.KEY_READ |
_winreg.KEY_SET_VALUE)
subkeys = []
i = 0
while True:
try:
subkeys.append (_winreg.EnumKey (key, i))
i += 1
except EnvironmentError:
break
values = []
i = 0
while True:
try:
values.append (_winreg.EnumValue (key, i))
i += 1
except EnvironmentError:
break
yield RegKey (top, key), subkeys, values
for subkey in subkeys:
for result in walk (top + "\\" + subkey):
yield result
if __name__ == '__main__':
for key, subkey_names, values in walk ("HKEY_LOCAL_MACHINE\\Software\\Python"):
print key
for (name, data, type) in values:
print " ", name, "=>", data
if type == _winreg.REG_SZ and "TJG" in data:
_winreg.SetValueEx (key.key, name, 0, type, data.replace ("TJG", "XYZ"))
</module regwalk.py>
TJG
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