[email protected] wrote:
> I am trying to build a list of dictionaries for the report writer and have
> run into a strange one. I need to build multiple records with some
> duplicated data.
It is you. Python dicts (and lists) are mutable, whereas most other types are
immutable. So when you append a dict to a list, the list references a pointer
to the
dict. Then you change an element in *that same dict*, and append it again, and
the
list now has 2 pointers to the same dict.
In your case, you don't need a deep copy, so this should suffice:
> #1
> rcdlist=[]
> rcd={'assigned': True, 'status': 'ASSIGNED TO CLASS ID: 10762 - 09/12/2009',
> 'enrollid': 27531, 'cname': u'Adams, Andrew '}
> print rcd
> rcdlist.append(rcd)
> print rcdlist
>
> #2
-----> rcd = rcd.copy()
> rcd['status']='somthing else'
> print rcd
> rcdlist.append(rcd)
> print rcdlist
Don't feel bad. I got burned by this at least twice, and they were doozies.
Paul
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