I’ve found this little easter egg hidden in pipenv:
if not environments.PIPENV_HIDE_EMOJIS: now = time.localtime() # Halloween easter-egg. if ((now.tm_mon == 10) and (now.tm_mday == 30)) or ( (now.tm_mon == 10) and (now.tm_mday == 31) ): INSTALL_LABEL = "🎃 " # Christmas easter-egg. elif ((now.tm_mon == 12) and (now.tm_mday == 24)) or ( (now.tm_mon == 12) and (now.tm_mday == 25) ): INSTALL_LABEL = "🎅 "
https://github.com/pypa/pipenv/blob/main/pipenv/core.py