How to retrieve the creation date of a Jira issuelink in Python? - python-jira

Question

I'm using the jira-python module and was not able to figure out how
to retrieve the creation date of a Jira issue link (inwardIssue, outwardIssue)
I looked at https://jira.readthedocs.io/en/master/api.html but could not seem
to find what i'm looking for.
For a given issuelink, the Python "dir()" function shows me:
['JIRA_BASE_URL', '_READABLE_IDS', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattr__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_base_url', '_default_headers', '_get_url', '_load', '_options', '_parse_raw', '_resource', '_session', 'delete', 'find', 'id', 'inwardIssue', 'outwardIssue', 'raw', 'self', 'type', 'update']
Any pointers would be greatly appreciated.
Thanks
--Andrew

Answer 1

For a given issue, the creation date is:
issue.fields.created

Answer 2

IssueLink types do not included information about when they were "created" (in this case the moment of linkage and not the creation of said linked issue). This information can be abstracted from an issue's changelog (eg: PROJECT-10):
issue = jira.issue('PROJECT-10', expand='changelog')
for history in issue.changelog.histories:
for item in history.items:
if item.field == 'Link':
print("{} was linked to {} at {}".format(item.toString.split()[-1], issue, history.created))