Hi All, I've just released the results of a nice Sunday's coding, inspired by one too many turns at futzing around with the _winreg module. The "regobj" module brings a convenient and clean object-based API for accessing the Windows Registry.
http://pypi.python.org/pypi/regobj/
More details and some API examples below for those who are interested.
Cheers,
Ryan
"""
regobj: Pythonic object-based access to the Windows Registry
License: BSD
Current Release: 0.1.0
This module provides a thin wrapper around the standard _winreg module,
allowing easier and more pythonic access to the Windows Registry. All
access to the registry is done through Key objects, which (surprise!)
represent a specific registry key.
Starting from pre-defined root keys, all subkey access is done using
standard attribute syntax:
>>> HKCU.Software.Microsoft.Windows
<regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows'>
>>> HKCU.Software.MyTests
Traceback (most recent call last):
...
AttributeError: subkey 'MyTests' does not exist
>>> HKCU.Software.MyTests = Key
>>> HKCU.Software.MyTests
<regobj Key 'HKEY_CURRENT_USER\Software\MyTests'>
>>> del HKCU.Software.MyTests
Of course, for keys that don't happen to be named like python
identifiers, there are also methods that can accomplish the same thing.
The individual values contained in a key can be accessed using standard
item access syntax. The returned objects will be instances of the Value
class, with 'name', 'type' and 'data' attributes:
>>> HKCU.Software.Microsoft.Clock["iFormat"]
<regobj Value (iFormat,1,REG_SZ)>
>>> HKCU.Software.Microsoft.Clock["iFormat"].name
'iFormat'
>>> HKCU.Software.Microsoft.Clock["iFormat"].data
u'1'
>>> HKCU.Software.Microsoft.Clock["iFormat"].type
1
>>> HKCU.Software.Microsoft.Clock["notavalue"]
Traceback (most recent call last):
...
KeyError: "no such value: 'notavalue'"
Iterating over a key generates all the contained values, followed by
all the contained subkeys. There are also methods to separately iterate
over just the values, or just the subkeys:
>>> winK = HKCU.Software.Microsoft.Windows
>>> winK["testvalue"] = 42
>>> for obj in winK:
... print obj
<regobj Value (testvalue,42,REG_DWORD)>
<regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion'>
<regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell'>
<regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\ShellNoRoam'>
>>> [k.name for k in winK.subkeys()]
['CurrentVersion', 'Shell', 'ShellNoRoam']
>>> [v.data for v in winK.values()]
[42]
These iterators also provide efficient implementations of the
__contains__ and __len__ methods.
Finally, there is powerful support for specifying key and value
structures at creation time. The simplest case has already been
demonstrated, where setting a subkey to the Key class or to None will
create it without any data:
>>> HKCU.Software.MyTests = None
>>> len(HKCU.Software.MyTests)
0
If a subkey is assigned an existing key object, the data from that key
is copied into the subkey:
>>> HKCU.Software.MyTests = HKCU.Software.Microsoft.Windows
>>> [k.name for k in HKCU.Software.MyTests]
['CurrentVersion', 'Shell', 'ShellNoRoam']
If a subkey is assigned a dictionary, the structure of that dictionary
is copied into the subkey. Scalar values become key values, while
nested dictionaries create subkeys:
>>> HKCU.Software.MyTests = {"val1":7, "stuff":{"a":1,"c":2,"e":3}}
>>> [v.name for v in HKCU.Software.MyTests.values()]
['val1']
>>> [k.name for k in HKCU.Software.MyTests.subkeys()]
['stuff']
>>> len(HKCU.Software.MyTests.stuff)
3
Any other value assigned to a subkey will become the default value for
that key (i.e. the value with name ""):
>>> HKCU.Software.MyTests = "dead parrot"
>>> HKCU.Software.MyTests[""].data
u'dead parrot'
And that's that - enjoy!
"""
--
Ryan Kelly
http://www.rfk.id.au | This message is digitally signed. Please visit
r...@rfk.id.au | http://www.rfk.id.au/ramblings/gpg/ for details
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