find a specified dictionary in a list

[John Machin]

Odd-R. wrote:
> I have this list:
> 
> [{'i': 'milk', 'oid': 1}, {'i': 'butter', 'oid': 2},{'i':'cake','oid':3}]
> 
> All the dictionaries of this list are of the same form, and all the oids
> are distinct. If I have an oid and the list, how is the simplest way of
> getting the dictionary that holds this oid?
> 

Something like this:

def oidfinder(an_oid, the_list):
     for d in the_list:
	if d['oid'] == an_oid:
             return d
     return None
     # These are not the oids you are looking for.