def validate_all ( self, object, name, value ):
        try:
            value = strx( value )
            if ((self.minlen <= len( value ) <= self.maxlen) and
                (self.match( value ) is not None)):
                return value
        except:
            pass

        self.error( object, name, value )
Return an `Authorization` header field value for `HTTP Basic Access Authentication (RFC 2617)`_
dataset/ETHPy150Open enthought/traits/traits/trait_types.py/String.validate_all--crossover with--dataset/ETHPy150Open scrapy/w3lib/w3lib/http.py/basic_auth_header