**argv can't work

[rzed]

"Jm lists" <practicalperl at gmail.com> wrote in 
news:mailman.2928.1169263231.32031.python-list at python.org:

> hello members,
> 
> See my script piece below:
> 
> def testB(shift,**argv):
>     print "first argument is %s" %shift
>     print "all other arguments are:",argv
> 
> testB('mails','Jen','Jen at att.com','Joe','Joe at aol.com')
> 
> It can't work at all.please help tell me the reasons.thanks.
> 

You have too many asterisks before argv. Use just one, like this:
def testB(shift,*argv):
    print "first argument is %s" %shift
    print "all other arguments are:",argv

testB('mails','Jen','Jen at att.com','Joe','Joe at aol.com')

Two asterisks signifies keyword arguments, like this:

def f(**c):
    for k,v in c.items():
         print k,v

f(a=1,b=2)