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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def show():
 """Returns a list of items currently in the database"""

    items = list(collection.find())
    # JSON conversion chokes on the _id objects, so we convert
    # them to strings here
    for i in items:
        i['_id'] = str(i['_id'])
    return items