def max_min_retrun(*list):
if list==[]:
return None,None
else:
minl=list[0]
maxl=list[0]
for n in list:
if n>maxl:
maxl=n
elif n<minl:
minl=n
return (maxl,minl)
m=max_min_retrun(1,3,111,333,2)
print(m)
q=m=max_min_retrun(1,3,33333,333,11)
print(q)
print("测试完毕!")