I Need A Placeholder

[Ampedesign]

I'm trying to build a try/except case, and I want to have the except
function like such:

try:
# Do some code here
var = 1 # For example
except:
#Do nothing here

The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.

So if anyone could suggest some code to put there as a placeholder
that would be wonderful.

[Daniel Mahoney]

Re: I Need A Placeholder

On Thu, 26 Jun 2008 10:03:47 -0700, Ampedesign wrote:

I'm trying to build a try/except case, and I want to have the except
function like such:
>
try:
# Do some code here
var = 1 # For example
except:
#Do nothing here
>
The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.
>
So if anyone could suggest some code to put there as a placeholder
that would be wonderful.

"pass" would work fine.

try:
# Do something that can throw an exception
except:
pass

[Ampedesign]

Re: I Need A Placeholder

On Jun 26, 10:06 am, Daniel Mahoney <d...@catfolks. netwrote:

On Thu, 26 Jun 2008 10:03:47 -0700, Ampedesign wrote:

I'm trying to build a try/except case, and I want to have the except
function like such:

>

try:
      # Do some code here
      var = 1         # For example
except:
      #Do nothing here

>

The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.

>

So if anyone could suggest some code to put there as a placeholder
that would be wonderful.

>
"pass" would work fine.
>
try:
     # Do something that can throw an exception
except:
     pass

Thanks. That will work perfectly.

[Gary Herron]

Re: I Need A Placeholder

Ampedesign wrote:

I'm trying to build a try/except case, and I want to have the except
function like such:
>
try:
# Do some code here
var = 1 # For example
except:
#Do nothing here
>
>

try:
# Do some code here
var = 1 # For example
except:
pass



Gary Herron

The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.
>
So if anyone could suggest some code to put there as a placeholder
that would be wonderful.
--

http://mail.python.org/mailman/listinfo/python-list

>

[Duncan Booth]

Re: I Need A Placeholder

Ampedesign <metalkeys404@g mail.comwrote:

I'm trying to build a try/except case, and I want to have the except
function like such:
>
try:
# Do some code here
var = 1 # For example
except:
#Do nothing here
>
The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.
>
So if anyone could suggest some code to put there as a placeholder
that would be wonderful.
>

Use the 'pass' statement.

But really, you should not have a bare except: if you are going to ignore a
specific exception that's fine, but don't ignore all exceptions. You'll
regret it.

[Ampedesign]

Re: I Need A Placeholder

On Jun 26, 10:08 am, Duncan Booth <duncan.bo...@i nvalid.invalid>
wrote:

Ampedesign <metalkeys...@g mail.comwrote:

I'm trying to build a try/except case, and I want to have the except
function like such:

>

try:
      # Do some code here
      var = 1         # For example
except:
      #Do nothing here

>

The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.

>

So if anyone could suggest some code to put there as a placeholder
that would be wonderful.

>
Use the 'pass' statement.
>
But really, you should not have a bare except: if you are going to ignorea
specific exception that's fine, but don't ignore all exceptions. You'll
regret it.

This is true. Though I get a wide range of exceptions since I'm
downloading and parsing a file. I will get everything from a socket
error to an empty xml element.

In the future however, I will make separate exceptions.

[Joshua Kugler]

Re: I Need A Placeholder

Ampedesign wrote:

I'm trying to build a try/except case, and I want to have the except
function like such:
>
try:
# Do some code here
var = 1 # For example
except:
#Do nothing here
>
The only problem is if I leave a comment only in the except block, I
get an error back saying that the except block is not properly
formatted, since it has no content other than a comment.
>
So if anyone could suggest some code to put there as a placeholder
that would be wonderful.

except:
pass

is the usual technique there.

j

[John Salerno]

Re: I Need A Placeholder

"Joshua Kugler" <jkugler@bigfoo t.comwrote in message
news:mailman.88 4.1214500462.10 44.python-list@python.org ...

except:
pass
>
is the usual technique there.

Is there any other?

[Carsten Haese]

Re: I Need A Placeholder

John Salerno wrote:

"Joshua Kugler" <jkugler@bigfoo t.comwrote in message
news:mailman.88 4.1214500462.10 44.python-list@python.org ...

>except:
> pass
>>
>is the usual technique there.

>
Is there any other?

Sure. Evaluating any side-effect free expression and ignoring the result
will work:

try:
# do somthing
except:
None

try:
# do something
except:
"I don't care about the exception."

Of course, using pass *is* the preferred method.

--
Carsten Haese

http://informixdb.sourceforge.net

[Peter Otten]

Re: I Need A Placeholder

John Salerno wrote:

"Joshua Kugler" <jkugler@bigfoo t.comwrote in message
news:mailman.88 4.1214500462.10 44.python-list@python.org ...

>except:
> pass
>>
>is the usual technique there.

>
Is there any other?

if 0: 42

Proof:

>>def cp(pass_):

.... return compile("try: 1/0\nexcept:\n %s" % pass_, "<nofile>", "exec")
....

>>cp("pass") == cp("if 0: 42")

True

:-)

Peter

[John Salerno]

Re: I Need A Placeholder

"Peter Otten" <__peter__@web. dewrote in message
news:g40lar$45c $02$1@news.t-online.com...

if 0: 42

How Pythonic. ;-)