Python 体重分类程序：根据输入计算体重等级

weight = input('请输入体重（单位：斤）：') if not weight.isdigit(): # 判断输入是否为数字 print('输入不合法！') else: weight = int(weight) if weight > 0 and weight <= 80: print('变成', weight + 80, '斤，属于瘦瘦的') elif weight >= 81 and weight <= 120: print('变成', weight + 40, '斤，属于中等') elif weight >= 121: print('变成', weight + 40, '斤，属于肥胖') else: print('输入不合法！')