odd.go

genOdd := func() chan int {
    ch := make(chan int)
    go func() {
        i := 1
        for {
            ch <- i
            i += 2
        }
    }()
    return ch
}

for i := range genOdd() {
    fmt.Println(i)
}

odd.py

def gen_odd():
    i = 1
    while True:
        yield i
        i += 2
        
for i in gen_odd():
    print i