Script to make all zotero tags lowercase

zotero_tags_lowercase.py

# The script below will update ALL your tags except those in the skip_tags list. Use it with caution. 
# It also splits all tags that have more than a word. It saves both the old tag and the new one. 
# That is, you have ("my tag word"), and you get ("my","tag", "word", "my tag word").
#The API_KEY and LIBRARY_ID are private. See the documentation.api_key = "xxxxx"
# Documentation: https://pyzotero.readthedocs.io/en/latest/
# Original thread: https://forums.zotero.org/discussion/92493/any-way-to-switch-all-tags-to-all-lower-case-or-ignore-case-in-tags

library_id = 0000000
library_type = "user"
from pyzotero import zotero
zot = zotero.Zotero(library_id, library_type, api_key)



skip_tags = [
    "⛔ No doifound",
    "⛔ No DOI found",
    "#broken_attachments",
    "#duplicate_attachments",
    "#nosource",
    "❓ multiple doi"
]
collections_keys = [x for x in zot.collections()]
for coll in zot.collections():
    # if coll["data"]["name"] != "TEST_COLLECTION":
    #     continue
    print("UPDATING: collection: " + coll["data"]["name"] )
    print(coll["key"])
    print(zot.num_collectionitems(coll["key"]))
    items = zot.collection_items(coll["key"])
    update_items = []
    for item in items:
        old_tags = item["data"]["tags"].copy()
        for tag in item["data"]["tags"]:
            if tag["tag"] in skip_tags: # skip tags
                continue
            if tag["tag"].startswith("zotero"): # it belongs to BetterNotes 
                continue
            tag["tag"] = tag["tag"].lower()
            multiple_tags = tag["tag"].split(" ")
            if len(multiple_tags) > 1:
                for new_tag in multiple_tags:
                    item["data"]["tags"].append({"tag":new_tag})
        new_tags = item["data"]["tags"]
        if old_tags != new_tags:
            changed_tags = [x["tag"].lower() for x in item["data"]["tags"]] 
            print(changed_tags)
            zot.update_item(item)
    # for item in items:
    #     # print(item["data"]["title"])
    #     print(item["data"]["tags"])

print("DONE")