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Re: can try expect have if else.

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  Re: can try expect have if else. Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-02-21 13:49 -0500

#103315 — Re: can try expect have if else.

On Sun, 21 Feb 2016 21:42:18 +0530, Ganesh Pal <ganesh1pal@gmail.com>
declaimed the following:

>Hi Team,
>
>Iam on python 2.6 , need input on the below piece of code.
>
>
>EXIT_STATUS_ERROR=1
>
>def create_dataset():
>    """
>     """
>    logging.info("Dataset create.....Started !!!")
>    try:
>        if os.path.ismount("/nfs_mount"):
>            touch_file("inode_fixcrc.txt")
>            logging.info("Dataset create.....Done !!!")
>        else:
>            raise Exception("/nfs_mount is not mounted. Dataset create
>failed !!!")
>            return False

	The return will never be reached -- executing "raise" will result in an
immediate transfer to ...

>    except Exception as e:

... this exception handler...

>            logging.error(e)
>            sys.stderr.write("Dataset create failed...Exiting !!!")
>            sys.exit(EXIT_STATUS_ERROR)

... which forcibly exits the program.

>    return True

	As a result, this True is of no real use. If the function doesn't
succeed, the program kills itself; the only way a caller gets control back
is when the function succeeds, so there is no need to test for success.
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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