-m, --multidisp
        For multiple heads, grab shot from each and join them together.

   Email bugs and feature requests to
   <scrot_sucks@linuxbrit.co.uk>

def f():while True: yield 1:

a = f()
a.next() #1
a.next() #1
a.next() #1

def test():
    yield 1
    yield 2
    yield 3

print(test())
for i in test():
    print(i)

for i in f(): # runs forever, i = 1

>>> def simple_generator_function():
>>>    yield 1
>>>    yield 2
>>>    yield 3

>>> for value in simple_generator_function():
>>>     print(value)
1
2
3
>>> our_generator = simple_generator_function()
>>> next(our_generator)
1
>>> next(our_generator)
2
>>> next(our_generator)
3

def fib()
	a = 1
	b = 1
	while Irue:
		yield a
		a, b = a+b, a

def getPrimes_parallelized(): #uses sieve of Sundaram
        yield 2
        yield 3
        P = [[4,1]]
        i = 2
        while 1:
            if P[0][0] <= i:
                while P[0][0] <= i:
                    P[0][0] += 2*P[0][1]+1
                    P.sort()
            elif P[0][0] > i:
                yield 2*i+1
                P.append([2*(i+i*i), i])
                P.sort()
            i += 1