Answers for "return codecs.charmap_encode(input,self.errors,encoding_table)[0] UnicodeEncodeError: 'charmap' codec can't encode characters in position 546-547: character maps to <undefined>"

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")

UnicodeEncodeError: 'charmap' codec can't encode characters in position 6-9: character maps to <undefined>

# it works in python 3
with open(filepath, 'w', encoding='utf-8') as f:
  # do stuff ...
  f.close()