1 问题在哪??
def getflatten(lists):
for s in lists:
if isinstance(s,list):
for item in getflatten(s):
yield item
else:
yield item
items=[[1,2,3],[4,5,[5,6,7]],[9,10]]
r=getflatten(items)
r.__next__()
r.send()
1 问题在哪??
def getflatten(lists):
for s in lists:
i