[Tutor] File like object for Windows registry
Hello! My app should run on debian and windows platforms. For storing the configuration data, I use the ConfigParser module. What I find difficult is to determine a place for my configuration file. On debian, it is simply os.path.join(os.path.expanduser(~)),myconfig) but what am I supposed to do on Windows? I think a clean solution would be to create a file-like object that reads and writes to the registry, is it? Kind regards, Karsten. -- Feel free – 10 GB Mailbox, 100 FreeSMS/Monat ... Jetzt GMX TopMail testen: http://www.gmx.net/de/go/topmail ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] File like object for Windows registry
On 8/3/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hello! My app should run on debian and windows platforms. For storing the configuration data, I use the ConfigParser module. What I find difficult is to determine a place for my configuration file. On debian, it is simply os.path.join(os.path.expanduser(~)),myconfig) but what am I supposed to do on Windows? I think a clean solution would be to create a file-like object that reads and writes to the registry, is it? You might be able to do that, I don't know much about win32 programming, but I believe a better solution is to use the built-in windows variables. %APPDATA% is where you should store user-specific application data (and even Microsoft is starting to store XML configuration files there), and it's an easy variable to get. import os os.environ[APPDATA] 'C:\\Documents and Settings\\UserName\\Application Data' That should function just fine as a home directory replacement. Kind regards, Karsten. -- Feel free – 10 GB Mailbox, 100 FreeSMS/Monat ... Jetzt GMX TopMail testen: http://www.gmx.net/de/go/topmail ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor -- --H.F. My penguin is bigger than yours, mister... ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] File like object for Windows registry
On 8/3/06, Henry Finucane [EMAIL PROTECTED] wrote: On 8/3/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hello! My app should run on debian and windows platforms. For storing the configuration data, I use the ConfigParser module. What I find difficult is to determine a place for my configuration file. On debian, it is simply os.path.join(os.path.expanduser(~)),myconfig) This works on Windows as well. I just tried it :-) but what am I supposed to do on Windows? I think a clean solution would be to create a file-like object that reads and writes to the registry, is it? Messing with the registry is (imo) a bad idea. You might be able to do that, I don't know much about win32 programming, but I believe a better solution is to use the built-in windows variables. %APPDATA% is where you should store user-specific application data (and even Microsoft is starting to store XML configuration files there), and it's an easy variable to get. import os os.environ[APPDATA] 'C:\\Documents and Settings\\UserName\\Application Data' That should function just fine as a home directory replacement. ... André ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] File like object for Windows registry
On 8/3/06, Andre Roberge [EMAIL PROTECTED] wrote: On 8/3/06, Henry Finucane [EMAIL PROTECTED] wrote: On 8/3/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hello! My app should run on debian and windows platforms. For storing the configuration data, I use the ConfigParser module. What I find difficult is to determine a place for my configuration file. On debian, it is simply os.path.join(os.path.expanduser(~)),myconfig) This works on Windows as well. I just tried it :-) Doh. Always try the simple stuff first :P. but what am I supposed to do on Windows? I think a clean solution would be to create a file-like object that reads and writes to the registry, is it? Messing with the registry is (imo) a bad idea. You might be able to do that, I don't know much about win32 programming, but I believe a better solution is to use the built-in windows variables. %APPDATA% is where you should store user-specific application data (and even Microsoft is starting to store XML configuration files there), and it's an easy variable to get. import os os.environ[APPDATA] 'C:\\Documents and Settings\\UserName\\Application Data' That should function just fine as a home directory replacement. ... André -- --H.F. My penguin is bigger than yours, mister... ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] File like object for Windows registry
My app should run on debian and windows platforms. Hard lines :-( For storing the configuration data, I use the ConfigParser module. What I find difficult is to determine a place for my configuration file. Config parser basically produces an .in file. The rules that Windows uses to locate .ini files vary according to Windows version. If you can assume you only have to deal with Win2K and XP then things are a bit easier since there is a recommended location and indeed users have the concept of a home directory - even the $HOME environment variable works. However traditionally ini files were stored in one of 1) the Windows directory (%WINDIR%) or 2) the application home directory. 3) The C:\ root directory - but this is now strongly discouraged If you want to have application level ini files as well as per user configurations those are still the preferred locations for the global files. Between Windows 95 and Windows 2000 the Registry was being pushed as the best place for config data but as Registry performance and corruption problems increase .ini files are coming back into favour. To summarise. If you want to just have a per user config file just store it in the users data folder. If you also have a global ini file then I recommend putting it in the app install folder. If the app is cross platform I'd advise keeping well clear of the registry, but if you must use it I'd favour using the WSH objects rather than the Win32 API calls to access the Registry - although it does add another dependency to the app. HTH, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] file-like object
I have created a file-like object out of a triple quoted string. I was wondering if there is a better way to implement readline than what I have below? It just doesn't seem like a very good way to do this. class _macroString(object): def __init__(self,s): self.macro=s self.list=self.macro.split(\n) for n,v in enumerate(self.list): self.list[n]=v+'\n' def readline(self,n=[-1]): n[0]+=1 return self.list[n[0]] def __str__(self): return str(self.list) def __len__(self): return len(self.list) __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
Best: use the StringIO or cStringIO module instead, this is exactly what it is for. If you really need len() you could maybe subclass StringIO to do what you want. Next best: Use an iterator. Something like this (Warning! not tested!): class _macroString(object): def __init__(self,s): self.macro=s self.list=[ line+'\n' for line in self.macro.split(\n) ] self._iter = iter(self.list) def readline(self): try: return self._iter.next() except StopIteration: return '' def __str__(self): return str(self.list) def __len__(self): return len(self.list) Note that your implementation of readline will raise IndexError when there are no more lines which is not correct behaviour. Kent Chad Crabtree wrote: I have created a file-like object out of a triple quoted string. I was wondering if there is a better way to implement readline than what I have below? It just doesn't seem like a very good way to do this. class _macroString(object): def __init__(self,s): self.macro=s self.list=self.macro.split(\n) for n,v in enumerate(self.list): self.list[n]=v+'\n' def readline(self,n=[-1]): n[0]+=1 return self.list[n[0]] def __str__(self): return str(self.list) def __len__(self): return len(self.list) __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
Thank you KentBot. That was what I wanted. Kent Johnson wrote: Best: use the StringIO or cStringIO module instead, this is exactly what it is for. If you really need len() you could maybe subclass StringIO to do what you want. Next best: Use an iterator. Something like this (Warning! not tested!): class _macroString(object): def __init__(self,s): self.macro=s self.list=[ line+'\n' for line in self.macro.split(\n) ] self._iter = iter(self.list) def readline(self): try: return self._iter.next() except StopIteration: return '' def __str__(self): return str(self.list) def __len__(self): return len(self.list) Note that your implementation of readline will raise IndexError when there are no more lines which is not correct behaviour. Kent __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
class _macroString(object): def __init__(self,s): self.macro=s self.list=self.macro.split(\n) for n,v in enumerate(self.list): self.list[n]=v+'\n' def readline(self,n=[-1]): n[0]+=1 return self.list[n[0]] Why not just create a current pointer as a clas attribute? Increment or reset as required. after all maintaining object state is what classes and objects are for! HTH, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
On Fri, 14 Jan 2005, Chad Crabtree wrote: class _macroString(object): def __init__(self,s): self.macro=s self.list=self.macro.split(\n) for n,v in enumerate(self.list): self.list[n]=v+'\n' Is this for loop a safe technique, where the list you're enumerating over in the for statement is the same as the one being updated in the loop body? I always avoid things like that. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
for n,v in enumerate(self.list): self.list[n]=v+'\n' Is this for loop a safe technique, where the list you're enumerating over in the for statement is the same as the one being updated in the loop body? I always avoid things like that. Its not changing the list, its changing the list contents. If it were adding or re,moving items from the list that would be dodgy, but modifying a existing element doesn't really change the list itself in any significant way. Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] file-like object
On Fri, 14 Jan 2005, Terry Carroll wrote: Is this for loop a safe technique, where the list you're enumerating over in the for statement is the same as the one being updated in the loop body? Rather than cluttering the list by making three replies, I'd just like to thank Danny, Alan and Jeff each for their answers to this. Clears it right up for me. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
