Class Filter
Instruction
--+
|
Stage
--+
|
Filter
flow equivalent to filter: Filter(function, stage, ... )
Yield those elements from a stage for which a function
returns true. If the function is None, the identity
function is assumed, that is, all items yielded that are
false (zero or empty) are discarded.
def odd(val):
if val % 2:
return True
def range():
yield 1
yield 2
yield 3
yield 4
source = flow.Filter(odd,range)
printFlow(source)
Method Summary |
|
__init__(self,
func,
stage,
*trap)
|
|
__iter__(self)
(inherited from Stage )
|
|
next (self)
return current result (inherited from Stage )
|