PyMongo 更新列表中键的字典值

Question

I am trying to update a dict value inside a list but it's resetting the other keys too.

For example,

data = {"a": "1", "b": "2", "c": ["d": "3", "e": "4", "f": "5"]}

but when I am doing:

mongo_collection.update_one({"a": "1"}, {"$set": {"a": "2", "c": ["d": "7"]})

My dict changes to:

{"a": "2", "b": "2", "c": ["d": "7"]}

Answer 1

Your nested list contains columns which results in invalid syntax.

Otherwise you can follow this approach

data = {"a": "1", "c": ["d", "3", "e", "4"]}

data["c"][1] = "49"

print(data)

output

{"a": "1", "c": ["d", "49", "e", "4"]}