如何将python openstack对象打印为json

Question

I'm trying to print a python object as json using json.dumps()

The object is a tenant object from keystoneclient.v2_0.client module.

If I print the object directly I get:

<Tenant {u'description': u'', u'enabled': True, u'id': u'dea3061f17df49a1a22f105d5e9bc971', u'name': u'Tets Lab 01'}>

Passing it to json.dumps fails ie

my_tenant = keystone.tenants.get('dea3061f17df49a1a22f105d5e9bc971')
json.dumps(my_tenant)

The error indicates that it is not serializable File "/usr/lib/python2.7/json/encoder.py", line 178, in default raise TypeError(repr(o) + " is not JSON serializable")

Other than parsing the string returned from the object, does anyone know if a way I can easily convert this to JSON output?

Answer 1

I ended up going through the code at: https://github.com/openstack/python-keystoneclient

The Tenant class extends a base resource, which implements a to_dict() method. This returns the data in a json format. https://github.com/openstack/python-keystoneclient/blob/master/keystoneclient/openstack/common/apiclient/base.py

my_tenant = keystone.tenants.get('dea3061f17df49a1a22f105d5e9bc971')
json.dumps(my_tenant.to_dict())

Answer 2

这应该做

json.dumps(vars(my_tenant))