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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ReplaceHomoglyphs(s):
 """Returns s with unicode homoglyphs replaced by ascii equivalents."""

    homoglyphs = {
        '\xa0': ' ',  # &nbsp; ?
        '\u00e3': '',  # TODO(gsfowler) drop after .proto spurious char elided
        '\u00a0': ' ',  # &nbsp; ?
        '\u00a9': '(C)',  # COPYRIGHT SIGN (would you believe "asciiglyph"?)
        '\u00ae': '(R)',  # REGISTERED SIGN (would you believe "asciiglyph"?)
        '\u2014': '-',  # EM DASH
        '\u2018': "'",  # LEFT SINGLE QUOTATION MARK
        '\u2019': "'",  # RIGHT SINGLE QUOTATION MARK
        '\u201c': '"',  # LEFT DOUBLE QUOTATION MARK
        '\u201d': '"',  # RIGHT DOUBLE QUOTATION MARK
        '\u2026': '...',  # HORIZONTAL ELLIPSIS
        '\u2e3a': '-',  # TWO-EM DASH
    }

    def _ReplaceOne(c):
        """Returns the homoglyph or escaped replacement for c."""
        equiv = homoglyphs.get(c)
        if equiv is not None:
            return equiv
        try:
            c.encode('ascii')
            return c
        except UnicodeError:
            pass
        try:
            return c.encode('unicode-escape').decode('ascii')
        except UnicodeError:
            return '?'

    return ''.join([_ReplaceOne(c) for c in s])