python - Python，用短破折号代替长破折号？

Answer 1

Long dash is not an ASCII character. Declare encoding of your script, like this (somewhere on top):

#-*- coding: utf-8 -*-

There are also other encodings beside utf-8 but it is always safe to use utf-8 if not working with ASCII characters which covers virtually all (unicode) characters.

See PEP 0263 for more info.

Answer 2

I would like to link another answer: https://stackoverflow.com/a/42856932/3751268. However that only worked for Python 2.

Here is a solution for python 3:

my_str = '—asasas—'
my_str.replace(b'\xe2\x80\x94'.decode('utf-8'), '--')