<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pipe_count(context=None, _INPUT=None, conf=None, **kwargs):
 """An operator that counts the number of _INPUT items and yields it forever. Not loopable. Parameters context : pipe2py.Context object _INPUT : pipe2py.modules pipe like object (iterable of items) conf : not used Yields ------ _OUTPUT : number of items in the feed Examples -------- 5 """


    count = len(list(_INPUT))
    # todo: check all operators (not placeable in loops)
    while True:
        yield count