TypeError：+ 的不支持的操作数类型：“int”和“str”错误

Question

我的代码有问题，它说

TypeError: +: 'int' 和 'str' 的操作数类型不受支持

我不知道为什么。导致此问题的代码区域如下所示，所有帮助将不胜感激：D！*编辑错误似乎是由于输入选项而发生的，如果有任何帮助的话。

Score1 = str(input("what did the first person get in their test the first     time?"))
Score2 = str(input("what did the first person get in their test the second  time?"))
Score3 = str(input("what did the first person get in their test the third time?"))

Score4 = str(input("what did the second person get in their test the first time?"))
Score5 = str(input("what did the second person get in their test the second time?"))
Score6 = str(input("what did the second person get in their test the third time?"))


Score7 = str(input("what did the third person get in their test the first time?"))
Score8 = str(input("what did the third person get in their test the second time?"))
Score9 = str(input("what did the third person get in their test the third time?"))


P1S = [Score1, Score2, Score3]
P2S = [Score4, Score5, Score6]
P3S = [Score7, Score8, Score9]



print ("here are the scores of",Name1,",well done") # defines scores
print(P1S)
print ("here is the average score of",Name1,",Well Done") # makes average of  scores
print(sum(P1S)/float(len(P1S)))

print ("here are the scores of",Name2,",well done") # defines scores
print(P2S)
print ("here is the average score of",Name2,",Well Done") # makes average of scores
print(sum(P2S)/float(len(P2S)))

print ("here are the scores of",Name3,",well done") # defines scores
print(P3S)
print ("here is the average score of",Name3,",Well Done") # makes average of scores
print(sum(P3S)/float(len(P3S)))

Answer 1

您明确注意用户输入的内容是字符串：

Score1 = str(input("what did the first person get in their test the first     time?"))

如果您将str() 替换为int() 或float()（取决于您期望输入的内容），您的问题应该会消失，因为您会得到一个数字类型而不是string .

Answer 2

将默认输入的字符串转换为整数，以便计算平均分数：

Score1 = int(input("what did the first person get in their test the first time?"))

Answer 3

您还可以在计算分数时使用地图。

print ("here are the scores of",Name1,",well done") # defines scores
print(P1S)
print ("here is the average score of",Name1,",Well Done") # makes average of  scores
print(sum(map(int,P1S))/float(len(P1S)))

print ("here are the scores of",Name2,",well done") # defines scores
print(P2S)
print ("here is the average score of",Name2,",Well Done") # makes average of scores
print(sum(map(int,P2S))/float(len(P2S)))

print ("here are the scores of",Name3,",well done") # defines scores
print(P3S)
print ("here is the average score of",Name3,",Well Done") # makes average of scores
print(sum(map(int,P3S))/float(len(P3S)))

你能告诉我你是如何提供输入的吗？