# coding=utf-8
# E = 3
# F = 0
# grade_list = range(E, F)
# print grade_list
B = 10
C = 20
D = 2
A = range(B, C, D)
print A

# 横坐标 03
start = 0
end = 3
# step=1 也可以设置步长
grade_list = range(start, end)
grade_list.reverse()
print grade_list

print b.decode('unicode_escape')


