if not isinstance(L, Iterable):
raise TypeError("参数错误")
max = None
min = None
for i in L :
if not isinstance(i, (int, float)):
continue
if max == None:
max = i
if min == None:
min = i
if max < i:
if min > i:
return (min, max)
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if not isinstance(L, Iterable):
raise TypeError("参数错误")
max = None
min = None
for i in L :
if not isinstance(i, (int, float)):
continue
if max == None:
max = i
if min == None:
min = i
continue
if max < i:
max = i
if min > i:
min = i
return (min, max)