python显示和判断回文数的方法

 a = input()
b = str(a)
flag = True
 
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for i in range(len(b)/2):
    if b[i]!=b[len(b)-i-1]:
        flag = False
        break
 
if flag:
    print "%d is huiwen number!" % a
 
else:
    print "%d is not huiwen number!" % a