Chad Kellerman wrote:
> Python users,
> I am parsing an AIX trace file and creating a dictionary containing
> keys (PIDS) and values (a list of TIDS). With PIDS being unique process
> ids
> and TIDS, being a list of thread ids. My function populates the keys so
> that they are unique, but my list contains duplicates.
>
> Can someone point me in the right direction so that my dictionary
> value
> does not contain duplicate elements?
>
>
> here is what I got.
>
> --------------<portion of code that is relevant>------------------
>
> pidtids = {}
>
> # --- function to add pid and tid to a dictionary
> def addpidtids(pid,tid):
> pidtids.setdefault(pid,[]).append(tid)
Use a set instead of a list (and maybe a defaultdict):
from collections import defaultdict
pidtids = defaultdict(set)
def addpidtids(pid, tid):
pidtids[pid].add(tid)
Peter
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