2 bugs remain for python 3.10

[retsyo]

1. cgi.escape is deprecated in python 3.4 #330
   as the post says, maybe we can change remi.gui.py:
   from

import cgi
escape = cgi.escape

to

try:
    import cgi
    escape = cgi.escape
except:
    import html
    escape = html.escape

2. windows 10 + python 3.9: AttributeError: 'HTMLParser' object has no attribute 'unescape' #412
   now we should change remi.gui.py:
   from

except ImportError:
    # Python 3
    try:
        from html.parser import HTMLParser
        h = HTMLParser()
        unescape = h.unescape
    except ImportError:
        # Python 3.4+
        import html
        unescape = html.unescape

which says

  File "e:\prg\py\winpython\python-3.10.9.amd64\lib\site-packages\remi-1.2.2-py3.10.egg\remi\gui.py", line 30, in <module>
    from HTMLParser import HTMLParser
ModuleNotFoundError: No module named 'HTMLParser'

to

except ImportError:
    # Python 3
    try:
        from html.parser import HTMLParser
        h = HTMLParser()
        unescape = h.unescape
    except:
        # Python 3.4+
        import html
        unescape = html.unescape

[burnpanck]

There are very few cases where except: is a good solution, and even less of those where you are not going to re-raise the exception afterwards. Also, I suggest to reverse the order of trials; first check for the newer solution, then fall back to the old, rather than vice-versa. For the second problem, you could do, for example:

except ImportError:
    # Python 3
    try:
        # Python 3.4+
        import html
        unescape = html.unescape
    except (AttributeError, ImportError):
        from html.parser import HTMLParser
        h = HTMLParser()
        unescape = h.unescape