UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 147: character maps to <undefined> code example

Example 1: 'charmap' codec can't decode byte 0x98 in position

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

Example 2: UnicodeDecodeError: 'charmap' codec can't decode byte 0x9e in position 3359: character maps to

#add the encoding parameter for open method
with open(filename, encoding='utf8') as infile: