import re
import string


def clean_text_round1(text):
    """Make text lowercase, remove text in square brackets, remove punctuation and remove words containing numbers."""
    text = text.lower()
    text = re.sub("\[.*?\]", "", text)
    text = re.sub("[%s]" % re.escape(string.punctuation), "", text)
    text = re.sub("\w*\d\w*", "", text)
    return text