On Wed, 18 Apr 2012 17:16:08 -0700, Miki Tebeka wrote:
>> So I'm interested in suggestions/examples where a user can update a
>> config file to specify by which means they want (in this case) the ssh
>> functionality to be supplied.
> You can do something like that (it's called a factory):
>
> COMMANDS = {
> 'win32': 'win32 command goes here',
> 'linux2': 'linux command goes here',
> 'darwin': 'OSX command goes here',
> }
> def get_command():
> return COMMANDS.get(sys.platform)
Your suggestion is good, but I think your terminology is off. COMMANDS is
a dispatch table, or a lookup table, and get_command merely does a look-
up in that table.
A factory dynamically builds a new object on request, rather than always
return the same old object time and time again. So a factory might look
like this:
def get_command(flag1=True, flag2=False, flag3=True):
cmd_parts = [COMMANDS.get(sys.platform)]
if flag1:
cmd_parts.append('--some_option')
else:
cmd_parts.append('--another_option')
cmd_parts.append('-x')
if flag2:
cmd_parts.append('spam')
else:
cmd_parts.append('ham')
if flag3:
cmd_parts.append('--foo=bar')
cmd = ' '.join(cmd_parts)
return cmd
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
