(pair, charset='utf-8')
return address
The inverse of parseaddr(), this takes a 2-tuple of the form
    (realname, email_address) and returns the string value suitable
    for an RFC 2822 From, To or Cc header.

    If the first element of pair is false, then the second element is
    returned unmodified.

    The optional charset is the character set that is used to encode
    realname in case realname is not ASCII safe.  Can be an instance of str or
    a Charset-like object which has a header_encode method.  Default is
    'utf-8'.
The inverse of parseaddr(), this takes a 2-tuple of the form
    (realname, email_address) and returns the string value suitable
    for an RFC 2822 From, To or Cc header.
The inverse of parseaddr () this takes a 2 - tuple of the form ( realname email_address ) and returns the string value suitable for an RFC 2822 From To or Cc header .
def formataddr(pair, charset='utf-8'):
    """The inverse of parseaddr(), this takes a 2-tuple of the form
    (realname, email_address) and returns the string value suitable
    for an RFC 2822 From, To or Cc header.

    If the first element of pair is false, then the second element is
    returned unmodified.

    The optional charset is the character set that is used to encode
    realname in case realname is not ASCII safe.  Can be an instance of str or
    a Charset-like object which has a header_encode method.  Default is
    'utf-8'.
    """
    name, address = pair
    # The address MUST (per RFC) be ascii, so raise a UnicodeError if it isn't.
    address.encode('ascii')
    if name:
        try:
            name.encode('ascii')
        except UnicodeEncodeError:
            if isinstance(charset, str):
                charset = Charset(charset)
            encoded_name = charset.header_encode(name)
            return "%s <%s>" % (encoded_name, address)
        else:
            quotes = ''
            if specialsre.search(name):
                quotes = '"'
            name = escapesre.sub(r'\\\g<0>', name)
            return '%s%s%s <%s>' % (quotes, name, quotes, address)
    return address
def formataddr ( pair , charset = 'utf-8' ) : name , address = pair # The address MUST (per RFC) be ascii, so raise a UnicodeError if it isn't. address . encode ( 'ascii' ) if name : try : name . encode ( 'ascii' ) except UnicodeEncodeError : if isinstance ( charset , str ) : charset = Charset ( charset ) encoded_name = charset . header_encode ( name ) return "%s <%s>" % ( encoded_name , address ) else : quotes = '' if specialsre . search ( name ) : quotes = '"' name = escapesre . sub ( r'\\\g<0>' , name ) return '%s%s%s <%s>' % ( quotes , name , quotes , address ) return address