Apply label and due string to all tasks in a Todoist given project

run.py

#!/usr/local/bin/python3

import uuid, requests, json

ACCESS_TOKEN="<access_token>"
PROJECT_TO_MODIFY="<project_to_modify>"
LABEL_TO_APPLY="<label_to_apply>"
DUE_STRING_TO_APPLY="<due_string_to_apply>"


api_url="https://api.todoist.com/rest/v1/"
auth_header={"Authorization": "Bearer %s" % ACCESS_TOKEN}


def get_dict_of(type):
	items = requests.get(api_url + type, headers=auth_header).json()

	items_dict = {}
	for item in items:
		items_dict.update({item["name"]: item["id"]})

	return items_dict


def get_tasks_in_project(project_id):
	return requests.get(
		api_url + "tasks",
		params={"project_id": project_id},
		headers=auth_header
	).json()



tasks = get_tasks_in_project(
	get_dict_of("projects")[PROJECT_TO_MODIFY]
)

labels = get_dict_of("labels")

for task in tasks:
	print("Updating task: %s" % task["content"])

	label_ids = task["label_ids"]
	if labels[LABEL_TO_APPLY] not in label_ids:
		label_ids.append(labels[LABEL_TO_APPLY])

	headers_obj = {
		"Content-Type": "application/json",
		"X-Request-Id": str(uuid.uuid4()),
	}
	headers_obj.update(auth_header)

	requests.post(
		api_url + "tasks/%s" % task["id"],
		data=json.dumps({
			"label_ids": label_ids,
			"due_string": DUE_STRING_TO_APPLY
		}),
		headers=headers_obj)