Is it possible to use the python "pickle" module with workers?

Error while compiling (offending file last):
        File '/Users/sean/Projects/alqen/apps/rhino/ai/sales-estimator/jon-sales-estimator/cloudflare-worker/index.py', line 1, at import of:
        File 'pickle', line 152, namely:

        Can't import module 'pickle'

Aborted

import pickle


def handleRequest(request):
    with open('./full_model_dict.pkl', 'rb') as handle:
        cat_model_dict = pickle.load(handle)

    test_feat_vec = [1334134.0, 6172404.0, 5753260.0, 1.0, 1.0]

    res = cat_model_dict.predict(test_feat_vec)

    return __new__(Response(res, {
        'headers': {'content-type': 'text/plain'}
    }))


addEventListener(
    'fetch', (lambda event: event.respondWith(handleRequest(event.request))))