Python 体重分类程序：判断偏瘦、中等、肥胖

weight = input('请输入体重（单位：斤）：')

try: weight = int(weight) if weight < 0 or weight > 120: print('非法输入') elif weight <= 80: print('变成了', weight+81, '斤，属于偏瘦') elif weight <= 120: print('变成了', weight+81, '斤，属于中等') else: print('变成了', weight+81, '斤，属于肥胖') except: print('非法输入')