Python3 代码

s1i = input()
s2i = input()

s1 = list(map(str.lower, s1i))
s2 = list(map(str.lower, s2i))

n = len(s1)
if n > len(s2):
    n = len(s2)

s = True  
for i in range (n):
    if s1[i] > s2[i]:
        s = False
        print (">")
        break
    elif s1[i] < s2[i]:
        s = False
        print ("<")
        break

if s:
    if len(s1) == len(s2):
        print ("=")
    elif len(s1) < len(s2):
         print ("<")
    else:
         print (">")