Method guess_extension

Lib/mimetypes.py:221–237

Guess the extension for a file based on its MIME type. Return value is a string giving a filename extension, including the leading dot ('.'). The extension is not guaranteed to have been associated with any particular data stream, but would be mapped to the MIME typ

(self, type, strict=True)

        return extensions

    def guess_extension(self, type, strict=True):
        """Guess the extension for a file based on its MIME type.

        Return value is a string giving a filename extension,
        including the leading dot ('.').  The extension is not
        guaranteed to have been associated with any particular data
        stream, but would be mapped to the MIME type 'type' by
        guess_type().  If no extension can be guessed for 'type', None
        is returned.

        Optional 'strict' argument when false adds a bunch of commonly found,
        but non-standard types.
        """
        extensions = self.guess_all_extensions(type, strict)
        if not extensions:
            return None
        return extensions[0]

    def read(self, filename, strict=True):
        """