Python Coroutines

python-coroutines-dynamic.py

class Coroutine: # I JUST WANT STRUCTS, BUT THIS LANGUAGE WONT LET ME
    def __init__(self, start, end, name):
        self.iterator = Coroutine.coroutine(start, end, name)
        self.is_done = False

    def next(self):
        if not self.is_done:
            self.is_done = next(self.iterator)
        return self.is_done

    @staticmethod
    def from_list(vals):
        return [
            Coroutine(start, end, name)
            for (start, end, name) in vals
        ]
        
    @staticmethod
    def coroutine(start, end, name):
        while start < end:
            print(f"[co - {name}] Doing stuff {start}");
            start += 1
            yield False # you can return a value if you want
        print(f"[co - {name}] Done!")
        yield True

coroutines = Coroutine.from_list([
    (0,  10, "one  "),
    (10, 19, "two  "),
    (2,  8,  "three"),
])

not_done = [False]
while False in not_done:
    not_done = []
    for co in coroutines:
        not_done.append( co.next() )

python-coroutines-manual.py

def coroutine(start, end, name):
    while start < end:
        print(f"[co - {name}] Doing stuff {start}");
        start += 1
        yield False # you can return a value if you want
    yield True

iter1 = coroutine(0, 10, "####")
iter2 = coroutine(5, 10, "----")

iter1_is_done = False
iter2_is_done = False

while not iter1_is_done or not iter2_is_done:
    if not iter1_is_done:
        iter1_is_done = next(iter1)
    if not iter2_is_done:
        iter2_is_done = next(iter2)