Problem with optparser or In

[Peter Otten]

Florian Lindner wrote:

> Hi,
> I'm not sure where the problems lies...
> I'm using optparse and I've a option defined:
> 
>  parser.add_option("-t", "--type", action="callback",
> callback=option_callback, type="string")
> 
> def option_callback(option, opt, value, parser, *args, **kwargs):

Change to 
      if (str(option) == "-t/--type") and (value in ("mailbox", "ftp")):
>     if (str(option) == "-t/--type") and (opt in ("mailbox", "ftp")):
>         print "Error!"
>     else:
>         parser.values.type = opt
> 
> This should print error if the commandline is "--type=ftp" or
> "--type=mailbox" (same for the short args).
> But it never gets till Error... Although opt contains "mailbox" or "ftp".
> What's wrong there?

In such cases the poor man's debugger aka print statement is your friend.

print opt 

would reveal that opt contains the actual option and value - surprise,
surprise -the value. 


Peter