Re: Linux : create a user if not exists

[Terry Reedy]

On 8/16/2011 10:57 AM, smain kahlouch wrote:

Ok than you. You're right but it doesn't help me :
I replaced it :

 >>> def finduser(user):
...     if pwd.getpwnam(user):
...             print user, "user exists"
...             return True
...     return False
...
 >>> finduser('realuser')
realuser user exists
True
 >>> finduser('blabla')
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "<stdin>", line 2, in finduser
KeyError: 'getpwnam(): name not found: blabla'

As you can see, i just want to look for a user and if it doesn't exist,
an action is taken (create user).

Replace if/then with try/except control flow

try:
   pwd.getpwnam(user)
   return True
except KeyWordError:
   return False

--
Terry Jan Reedy

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