How to dynamically create parameterized test from the file (json or yaml) in python

Really need an advice how to dynamically create parameterized tests from the file (json or yaml) in python. File contains list of urls

file example :

 { "name":"url_1", "url":"http://check.com","expected": "23"}

or :

{ "url_1", "http://check.com","23"}

Example like this:

@parameterized(from the file import name, expected)

def testUrl (self, name, url, expected):
    run something (%s) url
    assertTrue( expected = result)

OUTPUT :

test_for_url_1_ (test.TestClass) ... ok
test_for_url_2_ (test.TestClass) ... ok

I'm checking nose-parameterized for:

# An iterable of params
@parameterized(
    param.explicit(*json.loads(line))
    for line in open("testcases.jsons")
)
def test_from_json_file(...):
    ...

But can't make it work :(

Thank you in advance