Initializing a metric with a tuple for labels leads to incorrect label count

g = prometheus_client.Gauge(
            "my_super_special_metric",
           "This is  ametric", 
           ("label"))
g.labels({"label" : "somevalue"}).set(1)

Leads to “incorrect label names”. Changing it to:

g = prometheus_client.Gauge(
            "my_super_special_metric",
           "This is  ametric", 
           ["label"])
g.labels({"label" : "somevalue"}).set(1)

works normally.

Since both are iterable types, it would be idiomatic python to ensure that any non-string sequence type supplied for the labels be treated as a list of labels.

[Sispheor]

It’s ok, here is the way to go for thos who pass here

# declaration of the gauge
my_val= Gauge('val_name', 'My val description, ["product_name", "server_name"])

# usage
my_val.labels(product_name=product_name, server_name=server_name).set(val)

[brian-brazil]

(“label”)

This isn’t a tuple, it’s a string in parens. (“label”, ) is what you want.