def counter(start = 0):
def incr():
nonlocal start #分别保存每一个变量的临时值、类似yield
start += 1
return start
return incr
c1 = counter(5)
print(c1())
c2 = counter(50)
print(c2())
# c1 继续上次,输出接下来的值
print(c1())
print(c2())
2020-05-08