<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _get_ami_dict(json_url):
 """Get ami from a web url. Args: region (str):
 AWS Region to find AMI ID. Returns: dict: Contents in dictionary format. """

    LOG.info("Getting AMI from %s", json_url)
    response = requests.get(json_url)
    assert response.ok, "Error getting ami info from {}".format(json_url)
    ami_dict = response.json()
    LOG.debug('AMI json contents: %s', ami_dict)
    return ami_dict