from jira import JIRA

jiraUrl = ""
username = ""
project = ""
# I'm not sure if this is universal, but it's the ID for closed issues on our instance
closed_issue_id = "701"

# This needs to be an API key
password = ""

jira = JIRA(jiraUrl, basic_auth=(username, password))
issues = jira.search_issues("project=" + project + " and status=Resolved")

# close all of these issues
for issue in issues:
    jira.transition_issue(issue, closed_issue_id)