Confused compare function :)

[Rotwang]

On 06/12/2012 00:19, Bruno Dupuis wrote:
> [...]
>
> Another advice: never ever
>
> except XXXError:
>      pass
>
> at least log, or count, or warn, or anything, but don't pass.

Really? I've used that kind of thing several times in my code. For 
example, there's a point where I have a list of strings and I want to 
create a list of those ints that are represented in string form in my 
list, so I do this:

listofints = []
for k in listofstrings:
	try:
		listofints.append(int(k))
	except ValueError:
		pass

Another example: I have a dialog box with an entry field where the user 
can specify a colour by entering a string, and a preview box showing the 
colour. I want the preview to automatically update when the user has 
finished entering a valid colour string, so whenever the entry field is 
modified I call this:

def preview(*args):
	try:
		previewbox.config(bg = str(entryfield.get()))
	except tk.TclError:
		pass

Is there a problem with either of the above? If so, what should I do 
instead?


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