def header_encode(header_bytes, charset='iso-8859-1'):
    """Encode a single header line with quoted-printable (like) encoding.

    Defined in RFC 2045, this `Q' encoding is similar to quoted-printable, but
    used specifically for email header fields to allow charsets with mostly 7
    bit characters (and some 8 bit) to remain more or less readable in non-RFC
    2045 aware mail clients.

    charset names the character set to use in the RFC 2046 header.  It
    defaults to iso-8859-1.
    """
    # Return empty headers as an empty string.
    if not header_bytes:
        return ''
    # Iterate over every byte, encoding if necessary.
    encoded = []
    for octet in header_bytes:
        encoded.append(_QUOPRI_HEADER_MAP[octet])
    # Now add the RFC chrome to each encoded chunk and glue the chunks
    # together.
    return '=?%s?q?%s?=' % (charset, EMPTYSTRING.join(encoded))
def header_encode ( header_bytes , charset = 'iso-8859-1' ) : if not header_bytes : return '' encoded = [ ] for octet in header_bytes : encoded . append ( _QUOPRI_HEADER_MAP [ octet ] ) return '=?%s?q?%s?=' % ( charset , EMPTYSTRING . join ( encoded ) )
Encode a single header line with quoted-printable (like) encoding.

    Defined in RFC 2045, this `Q' encoding is similar to quoted-printable, but
    used specifically for email header fields to allow charsets with mostly 7
    bit characters (and some 8 bit) to remain more or less readable in non-RFC
    2045 aware mail clients.

    charset names the character set to use in the RFC 2046 header.  It
    defaults to iso-8859-1.