Description
Here is example code that reproduces the problem:
import pymongo
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client = pymongo.MongoClient()
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client.drop_database('test_db')
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client['admin'].command({'setParameter': 1, 'notablescan': False})
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db = client.test_db
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coll = db['coll']
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res = coll.insert({'a': {'png': 0, 'jpg': 0}})
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entries = list(coll.find())
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print "All entries:", entries
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for e in entries:
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res = list(coll.find(e))
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print "Single entry", res
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assert len(res) == 1 and res[0] == e
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client.drop_database('test_db')
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Removing or renaming either 'png' or 'jpg' field helps. I am wondering why those names are special.