请帮忙！ ！ ！我无法弄清楚这一点 [英] Please help! ! ! I cannot figure this out
问题描述
编写一个course_grader函数，该函数将测试分数列表作为其参数。它将累计这些测试分数并计算平均分数。然后它应该根据这两个条件返回通过或失败的消息：
如果平均分数大于或等于70且没有单个测试分数低于50，则返回消息通过。
如果平均分数低于70或至少有一个测试分数低于50，则返回失败消息。
一些示例函数调用以及应该打印的内容的注释包含在main中以用于测试目的。你应该只将course_grader函数的代码放入Vocareum。
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def course_grader（test_scores）：
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＃您的代码在这里
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def main（）：
打印（ course_grader（[100,75,45]））＃失败
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print（course_grader（[100,70,85]））＃pass
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打印（course_grader（[80,60,60]））＃失败
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print（course_grader（[80,80,90,30,80]））＃失败
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print（course_grader（[70,70,70,70] ，70）））＃通过
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if __name__ ==__ main__ ：
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main（）
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我尝试过的事情：
我已经尝试了很多if else语句和许多其他操作。
Write a course_grader function that takes a list of test scores as its parameter. It will add up these test scores and calculate an average score. It should then return a message of "pass" or "fail" depending on these two conditions:
If the average score is greater than or equal to 70 and no single test score is below 50, then return a message of "pass".
If the average score is lower than 70 or at least one test score is below 50, then return a message of "fail".
Some sample function calls with comments on what should be printed out are included in main for testing purposes. You should only put the code for the course_grader function into Vocareum.
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def course_grader(test_scores):
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# Your code here
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def main():
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print(course_grader([100,75,45])) # "fail"
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print(course_grader([100,70,85])) # "pass"
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print(course_grader([80,60,60])) # "fail"
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print(course_grader([80,80,90,30,80])) # "fail"
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print(course_grader([70,70,70,70,70])) # "pass"
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if __name__ == "__main__":
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main()
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What I have tried:
I have tried all lots of if else statements and many other operations.
推荐答案
单独获取每个语句并记下获取结果所需的步骤。一旦你完成所有步骤，然后开始将你所写的内容转换成代码。
例如它会将这些测试分数加起来并计算平均分数。
这部分需要什么？从两个变量开始，一个保存总和，一个计数：将两者都设置为零。在计算值的数量时，将每个值添加到总和中。累积所有值后，使用总和和计数来计算平均值。
Take each statement in isolation and write down the steps necessary to get the result. Once you have all steps then start converting what you have written into code.
For example "It will add up these test scores and calculate an average score."
What is necessary for this part? Start with two variables, one that will hold the sum, and one the count: set both to zero. Add each value to the sum while counting the number of values. Once all values have been accumulated use the sum and the count to calculate the average.
我已经尝试了很多if else语句和许多其他操作。
I have tried all lots of if else statements and many other operations.
所以，你没有尝试自己解决问题，你只是说你尝试过，你毫无疑问，你只是想让我们做你的HomeWork。
HomeWork问题是你在现实生活中必须解决的问题的简化版本，他们的目的是学习和练习。
我们不做你的HomeWork。
HomeWork不会测试你乞求别人做你的工作的技巧，它是让您思考并帮助您的老师检查您对所学课程的理解以及您应用这些课程时遇到的问题。
你的任何失败都会帮助你的老师发现你的弱点并设定补救措施。
你的任何失败都会帮助你了解什么有效，什么无效，被称为'试错'学习。
所以，试一试，重读课程并开始工作。如果您遇到特定问题，请显示您的代码并解释这个问题，我们可能会提供帮助。
作为程序员，您的工作是创建算法解决特定问题，你不能依赖别人永远为你做，所以有一段时间你必须学会如何。而且越快越好。
当你要求解决方案时，就像试图通过培训其他人来学习开车一样。
创建算法基本上是找到数学并做出必要的调整以适应你的实际问题。
So, you show no attempt to solve the problem yourself, you just say that you tried things, you have no question, you just want us to do your HomeWork.
HomeWork problems are simplified versions of the kind of problems you will have to solve in real life, their purpose is learning and practicing.
We do not do your HomeWork.
HomeWork is not set to test your skills at begging other people to do your work, it is set to make you think and to help your teacher to check your understanding of the courses you have taken and also the problems you have at applying them.
Any failure of you will help your teacher spot your weaknesses and set remedial actions.
Any failure of you will help you to learn what works and what don't, it is called 'trial and error' learning.
So, give it a try, reread your lessons and start working. If you are stuck on a specific problem, show your code and explain this exact problem, we might help.
As programmer, your job is to create algorithms that solve specific problems and you can't rely on someone else to eternally do it for you, so there is a time where you will have to learn how to. And the sooner, the better.
When you just ask for the solution, it is like trying to learn to drive a car by having someone else training.
Creating an algorithm is basically finding the maths and make necessary adaptation to fit your actual problem.
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