'''
比较输入的三个数字之间的大小，按从小到大排列
a,b,c
例如：输入2,5,3
输出：2，3，5
'''
def main():
a = int(input('please input value_a:'))
b = int(input('please input value_b:'))
c = int(input('please input value_c:'))
if a > b and a > c:
temp = c
c = a
a = temp
if a > b:
temp = a
a = b
b = temp
elif b > a and b > c:
temp = c
c = b
b = temp
if a > b:
temp = a
a = b
b = temp
elif c > a and c > b:
if a > b:
temp = a
a = b
b = temp
print('三个数按顺序从小到大排列为{},{},{}'.format(a,b,c))
if __name__ == '__main__':
main()
