Print values in Python debugger

Question

In my Python code, I have this call inside a bounded method:

instances = instance_objects.InstanceList().get_by_host(ctxt, self.host)

When I debug with the Python debugger (pdb) and I issue p instances i get this output:

InstanceList(objects=[Instance(bdfbf658-da32-445d-9560-56d496abcb9d)])

When I issue p instances.objects i get this output:

[Instance(
access_ip_v4=None,
access_ip_v6=None,
architecture=None,
auto_disk_config=False,
availability_zone=None,
cell_name=None,
cleaned=False,
vcpus=1,
)]

How can I print out the value of vcpus in pdb?

Isn't the value 1? It looks like you're getting that data when you issue p instances.objects — hammygoonan
– hammygoonan, Commented Sep 22, 2016 at 0:10
Yes, you are right. But I would like to have only the value 1 printed out. The thing is that this Instance is much longer than what I actually listed. What you see is only a small part of it. — RichArt
– RichArt, Commented Sep 22, 2016 at 0:43

user3657941 · Accepted Answer · 2016-09-22 14:16:52Z

1

Try

p instances.objects[0].vcpus

answered Sep 22, 2016 at 14:16

user3657941

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2 Comments

RichArt Over a year ago

Just a short question: is it a tuple in a list? I mean, it cannot be a dict in a list because a dict has curly brackets. Right?

user3657941 Over a year ago

It looks like an instance of a class named Instance. It looks like vcpus is an attribute of the class. What is the output of p type(instances.objects[0])?

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