用 $nin

Consider the following query:

db.inventory.find( { qty: { $nin: [ 5, 15 ] } } )

If the field holds an array, then the $nin operator selects the documents whose field holds an array with no element equal to a value in the specified array (e.g. , , etc.).

 Post.objects(tags__ne='php')

其实就用 $ne 就好了。

 from pymongo import MongoClient

client = MongoClient("mongodb://127.0.0.1")
db = client["your-db"]
collection = db["your-collection"]
iter = collection.find({
    "tags": {
        "$ne": "php",
    },
})