[JIRA] add example jira_add_label_tag.py

examples/jira/jira_add_label_tag.py

@@ -0,0 +1,24 @@
+# coding=utf-8
+from atlassian import Jira
+
+# This example shoes how to add an additional value to the Labels field
+# without loosing the previously defined ones already defined
+
+issue_key = "TST-1"
+new_tag = "label_to_add_for_test"
+jira = Jira(url="http://localhost:8080", username="admin", password="admin")
+
+
+def jira_add_label(issue_key, new_tag):
+    field_name = "labels"
+    # get value and save
+    field_value = jira.issue_field_value(issue_key, field_name)
+    field_value.append(new_tag)
+    # prepare data like this
+    # https://developer.atlassian.com/server/jira/platform/jira-rest-api-example-edit-issues-6291632
+    field_preparation = {field_name: field_value}
+    # update custom field on destination issue
+    jira.update_issue_field(issue_key, field_preparation)
+
+
+jira_add_label(issue_key, new_tag)