python boto3 dynamodb query function dynamic arguments

Question

Python boto3 library dynamodb.query method. how do we pass dynamic arguments

client = boto3.resource("dynamodb")

params = {
    "Limit": 10,
    "ExpressionAttributeNames":{"#pk":"pk"},
    "ExpressionAttributeValues":{":pk":"value"},
    "KeyConditionExpression":"#pk=:pk",
    "ScanIndexForward": False
}
res = client.query(params)

It responds with error:

An error occurred (ValidationException) when calling the Query operation: Either the KeyConditions or KeyConditionExpression parameter must be specified in the request.

Horatiu Jeflea · Accepted Answer · 2020-02-22 19:30:10Z

2

Try with ** to set the parameters correctly:

res = client.query(**params)

answered Feb 22, 2020 at 19:30

Horatiu Jeflea

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