Answers for "beautiful return codecs.charmap_encode(input,self.errors,encoding_table)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\U0001f381' in position 5937: character maps to <undefined>"

charmap' codec can't encode character 'u010d' in position 97: character maps to <undefined>

import io
with io.open(fname, "w", encoding="utf-8") as f:
    f.write(html)

return codecs.charmap_decode(input,self.errors,decoding_table)[0] UnicodeDecodeError: 'charmap' codec can't decode byte 0x8d in position 280: character maps to <undefined>

file = open(filename, encoding="utf8")