# Primer iteratorja

class MojIterator():
    def __init__(self):
        self.k = 0
        
    def __iter__(self):
        return self
        
    def __next__(self):
        self.k += 2
        return self.k
        
# Primeri generatorjev
def enaDvaTri():
    yield 1
    yield 2
    yield 3
    
def sodaStevila():
    k = 0
    while k < 100:
        yield k
        k = k + 2

def mojRange(a,b):
    k = a
    while k < b:
        yield k
        k = k + 1