def f1():
print(11)
yield
print(22)
yield
print(33)
def f2():
print(55)
yield
print(66)
yield
print(77)
v1 = f1()
v2 = f2()
next(v1) # v1.send(None)
next(v2) # v1.send(None)
next(v1) # v1.send(None)
next(v2) # v1.send(None)
next(v1) # v1.send(None)
next(v2) # v1.send(None)
相关文章：