Hi all,
I can't remember how to do this.
I have several instances of telnet connections that I label
conn2,conn3, etc. Later when I want to scroll through all of these I
wanted to do something like this:
for int in range(2, 9):
use... conn+str(int) {I'm passing it into another
function}
I can't get it to work. I've tried using setattr and eval, but nothing
seems to work. Can I get a little help.
Thanks ahead of time,
Marc 3 2698
On 1 Aug 2003 14:05:19 -0700, mn******@airmai l.net (Marc) wrote: Hi all,
I can't remember how to do this.
I have several instances of telnet connections that I label
How do you "label" them? By assigning, like conn2 = someSourceOfCon n(...)?
conn2,conn3, etc. Later when I want to scroll through all of these I wanted to do something like this:
for int in range(2, 9):
^^^-- BAD name!! you are shadowing the builtin int. use... conn+str(int) {I'm passing it into another function}
Do you want to pass a name in the form of a string, like 'conn2' or do you
want the conn2 that you assigned before?
<untested>
If you know the names, you could just write
for aConn in (conn2, conn3, ..., conn8): # filling in the rest in place of '...'
usingFunc(aConn )
If you had stored the conn's in a list instead of individual names, you could write
for aConn in theList:
usingFunc(aConn )
If you want to pick them up by generated string name from the local namespace, you could write
something like you started with, e.g.,
for i in range(2, 9):
name = 'conn%s' % i
aConn = vars()[name] # or use globals() in place of vars() if not in local namespace
usingFunc(aConn )
or in one line
for i in range(2, 9): usingFunc(vars( )['conn%s'%i]) # ditto re globals() vs vars()
</untested> I can't get it to work. I've tried using setattr and eval, but nothing seems to work. Can I get a little help.
Post the code that creates the conn2 etc bindings if the above does not work for you.
Regards,
Bengt Richter
> >I have several instances of telnet connections that I label How do you "label" them? By assigning, like conn2 = someSourceOfCon n(...)?
Exactly. They are each separate instances of a telnet connection:
conn2 = telnetlib...
....
conn8 = telnetlib...
Do you want to pass a name in the form of a string, like 'conn2' or do you want the conn2 that you assigned before?
Actually right now I'm using the list method:
<snippett>
conns = [conn2, conn3, conn4, conn5, conn6, conn7, conn8]
....
for int in range(2,9):
qput(key.comman d, conns[int-2], act_user("user-ID" + str(int), "CTAG",
"t*sting" + str(int) ) )
<end of snippett>
I didn't include the code originally because it goes off in a lot of
directions. I'm putting it into a queue with function qput that later gets
executed with a function in file key.
The list method works for me with a small number of connections, but if I
ever need a lot of connections it will be a little klunky. Therefore I was
trying to find a fix similar to using setattr if I was using classes. So
basically I want to be able to use the conn2 that I assigned before, but
referencing it using a string.
I think the method you mentioned:
for i in range(2, 9):
name = 'conn%s' % i
aConn = vars()[name] # or use globals() in place of vars() if not
in local namespace
usingFunc(aConn )
is what I'm looking for as it appears to concatenate "conn" with a number to
create the instance name. I hadn't come across the built-in function "vars"
yet, but I was trying to accomplish the same thing using "eval".
Thanks for the tip,
Marc
> <snippett> conns = [conn2, conn3, conn4, conn5, conn6, conn7, conn8] ... for int in range(2,9): qput(key.comman d, conns[int-2], act_user("user-ID" + str(int),
"CTAG", "t*sting" + str(int) ) ) <end of snippett>
And what happens if you follow 'snippett' with anything like
type(var)==int # or
var=int(num/3) # or
num = int(somestring)
or preceed it with something like
for str in stringlist: .....
?
Please don't use type names (or other builtins) as variables in posted
code.
Experts may survive it, but it's a bad example for beginners. ;-)
Terry J. Reedy This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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