(string, prefix)
return "{}-{}".format(prefix, string)
Prefix single string with the defined
    custom data prefix (such as data-field-whatevs).
Prefix single string with the defined
    custom data prefix (such as data-field-whatevs).
Prefix single string with the defined custom data prefix ( such as data - field - whatevs ) .
def with_prefix(string, prefix):
    """
    Prefix single string with the defined
    custom data prefix (such as data-field-whatevs).
    """
    return "{}-{}".format(prefix, string)
def with_prefix ( string , prefix ) : return "{}-{}" . format ( prefix , string )