How to use the awscurl.utils.sha256_hash_for_binary_data function in awscurl

if security_token:
        canonical_headers += ('x-amz-security-token:' + security_token + '\n')

    # Step 5: Create the list of signed headers. This lists the headers
    # in the canonical_headers list, delimited with ";" and in alpha order.
    # Note: The request can include any headers; canonical_headers and
    # signed_headers lists those that you want to be included in the
    # hash of the request. "Host" and "x-amz-date" are always required.
    signed_headers = 'host;x-amz-date'

    if security_token:
        signed_headers += ';x-amz-security-token'

    # Step 6: Create payload hash (hash of the request body content). For GET
    # requests, the payload is an empty string ("").
    payload_hash = sha256_hash_for_binary_data(data) if data_binary else sha256_hash(data)

    # Step 7: Combine elements to create create canonical request
    canonical_request = (method + '\n' +
                         requests.utils.quote(canonical_uri) + '\n' +
                         canonical_querystring + '\n' +
                         canonical_headers + '\n' +
                         signed_headers + '\n' +
                         payload_hash)

    __log('\nCANONICAL REQUEST = ' + canonical_request)
    return canonical_request, payload_hash, signed_headers