(encoder, datum, schema, named_schemas, fname)
A boolean is written as a single byte whose value is either 0 (false) or
    1 (true).
A boolean is written as a single byte whose value is either 0 (false) or
    1 (true).
A boolean is written as a single byte whose value is either 0 ( false ) or 1 ( true ) .
def write_boolean(encoder, datum, schema, named_schemas, fname):
    """A boolean is written as a single byte whose value is either 0 (false) or
    1 (true)."""
    encoder.write_boolean(datum)
def write_boolean ( encoder , datum , schema , named_schemas , fname ) : encoder . write_boolean ( datum )