[m-arnold]

This is what I get on Python 3.6:

  Python 3.6.8 (default, Dec 30 2018, 13:01:27)
  Type 'copyright', 'credits' or 'license' for more information
  IPython 7.5.0 -- An enhanced Interactive Python. Type '?' for help.

  In [1]: len("FACEPALM_EMOJI_DELETED_BY_HN")
  Out[1]: 1

[masklinn]

That would be because it's a single codepoint (U+1F926 FACE PALM).

Try out the family or flag emoji (which are composite) and you should get a different result.