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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 encodings(self):
 """Yield a number of encodings that might work for this markup."""

        tried = set()
        for e in self.override_encodings:
            if self._usable(e, tried):
                yield e

        # Did the document originally start with a byte-order mark
        # that indicated its encoding?
        if self._usable(self.sniffed_encoding, tried):
            yield self.sniffed_encoding

        # Look within the document for an XML or HTML encoding
        # declaration.
        if self.declared_encoding is None:
            self.declared_encoding = self.find_declared_encoding(
                self.markup, self.is_html)
        if self._usable(self.declared_encoding, tried):
            yield self.declared_encoding

        # Use third-party character set detection to guess at the
        # encoding.
        if self.chardet_encoding is None:
            self.chardet_encoding = chardet_dammit(self.markup)
        if self._usable(self.chardet_encoding, tried):
            yield self.chardet_encoding

        # As a last-ditch effort, try utf-8 and windows-1252.
        for e in ('utf-8', 'windows-1252'):
            if self._usable(e, tried):
                yield e