length = len(L)
if length == 0:
return (None, None)
else:
a = L[0]
b = L[0]
for i in L:
if i < a:
a = i
elif i > b:
b = i
pass
return (a, b)
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EverBefore25971
length = len(L)
if length == 0:
return (None, None)
else:
a = L[0]
b = L[0]
for i in L:
if i < a:
a = i
elif i > b:
b = i
else:
pass
return (a, b)