How to use the emoji.UNICODE_EMOJI.items function in emoji

def random_emoji():
    # Don't return a random flag (hence the `islower`)
    emojis = [
        e
        for e, unicode in emoji.UNICODE_EMOJI.items()
        if unicode[1].islower() and len(e) == 1
    ]
    return random.choice(emojis)

# coding: utf8
from __future__ import unicode_literals

from spacy.tokens import Doc, Span, Token
from spacy.matcher import PhraseMatcher
from emoji import UNICODE_EMOJI

from .about import __version__

# make sure multi-character emoji don't contain whitespace
EMOJI = {e.replace(' ', ''): t for e, t in UNICODE_EMOJI.items()}


class Emoji(object):
    """spaCy v2.0 pipeline component for adding emoji meta data to `Doc` objects.
    Detects emoji consisting of one or more unicode characters, and can
    optionally merge multi-char emoji (combined pictures, emoji with skin tone
    modifiers) into one token. Emoji are matched using spaCy's `PhraseMatcher`,
    and looked up in the data table provided by the "emoji" package:
    https://github.com/carpedm20/emoji

    USAGE:
        >>> import spacy
        >>> from spacymoji import Emoji
        >>> nlp = spacy.load('en')
        >>> emoji = Emoji(nlp)
        >>> nlp.add_pipe(emoji, first=True)