python求列表中数字的最大值最小值及下标
a = [2,3,4,5,6,7]
max_num = a[0]
min_num = a[0]
max_index = 0
min_index = 0
for i in range(len(a)):
if a[i]>max_num:
max_num = a[i]
max_index = i
else:
min_num = a[i]
min_index = i
print(max_num,max_index,min_num,min_index)