Processing on a string
Fredrik Lundh
fredrik at effbot.org
Mon Feb 5 16:30:48 EST 2001
Jay Collins wrote:
> I have a list that is all the lines from the password file.
>
> if I did print p[0] # p being a line in /etc/passwd
> I would get:
>
> uucp:x:10:14:uucp:/var/spool/uucp:
how about:
import pwd
mylist = [entry[0] for entry in pwd.getpwall()]
> or whatever. My question is how do process this list into another
> list with just everything before the first ":". I'm not quite sure how to
> do this.
...but if you insist on reading /etc/passwd yourself,
you could do:
passwd = open("/etc/passwd").readlines()
mylist = [entry.split(":", 1)[0] for entry in passwd]
hope this helps!
Cheers /F
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