python查找问题：if BMI1<=18.5: print("偏瘦") else BMI1>18.5 and BMI1<=25: print("正常") else BMI1 > 25 and BMI1 <= 30: print("偏胖") else: print("肥胖")

这段代码存在语法错误，应该使用elif来表示多个条件分支，比如：

if BMI1 <= 18.5: print("偏瘦") elif BMI1 > 18.5 and BMI1 <= 25: print("正常") elif BMI1 > 25 and BMI1 <= 30: print("偏胖") else: print("肥胖")

注意，每个分支都应该以elif开头，最后一个分支使用else。否则会出现语法错误。

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