在 python 中打印输出（输入和输出过程）答案

【问题标题】：printing out (input and output process) in python在 python 中打印输出（输入和输出过程）
【发布时间】：2018-10-24 02:35:19
【问题描述】：

我想我的任务差不多完成了。我正在尝试打印： “嗨，约翰，（新行）您的编程原理课程有 89.6%。” 但是，当我打印以下内容时，显示如下： “嗨，约翰，（新行）你的编程原理课程的 89.4 %。”
那么你们能帮我如何在没有空格的情况下放置 % 符号吗？有没有更好的方法来打印这些字词？

student_name = input("Enter student's name: ")
course_name = input("Enter course name: ")

quizzes_weight = input("Enter quizzes weight: ")
projects_weight = input("Enter projects weight: ")
activities_weight = input("Enter activities weight: ")
attendance_weight = input("Enter attendance weight: ")
exams_weight = input("Enter exams weight: ")

quizzes_average = input("Enter quizzes average: ")
projects_average = input("Enter projects average: ")
activities_average = input("Enter activities average: ")
attendance_average = input("Enter attendance average: ")
exams_average = input("Enter exams average: ")

quizzes_weight = float(quizzes_weight)
projects_weight = float(projects_weight)
activities_weight = float(activities_weight)
attendance_weight = float(attendance_weight)
exams_weight = float(exams_weight)

quizzes_average = float(quizzes_average)
projects_average = float(projects_average)
activities_average = float(projects_average)
attendance_average = float(attendance_average)
exams_average = float(exams_average)

average_score_for_course = ((quizzes_weight * quizzes_average) + 
(projects_weight * projects_average) + (activities_weight * 
activities_average) + (attendance_weight * attendance_average) + 
(exams_weight * exams_average)) * 100

print("Hi",student_name +",","\nYou have a", 
average_score_for_course,"% in your", course_name,"course.")

对于这个作业，我上面的编程应该根据我的输入编码产生如下输出。例如：

Enter student's name: Ryan
Enter course name: Advanced Quantum Mechanics

Enter quizzes weight: .1
Enter projects weight: .2
Enter activities weight: .3
Enter attendance weight: .1
Enter exams weight: .3

Enter quizzes average: 1
Enter projects average: .85
Enter activities average: .9
Enter attendance average: .95
Enter exams average: .87

输出应该是这样的：

Hi Ryan,
You have a 89.6% in your Advanced Quantum Mechanics course.

【问题讨论】：

标签： python python-3.x printing user-input

【解决方案1】：

查看您的代码：

print("Hi",student_name +",","\nYou have a", 
average_score_for_course,"% in your", course_name,"course.")

当您为打印功能使用逗号分隔符时，默认情况下会添加一个空格。用 + 替换逗号：

print(average_score_for_course + "% in your")

通过将逗号替换为 +，它会删除 Python 默认添加的空格。

使用 Emma 的解决方案（字符串格式化）是解决您问题的更好和更 Pythonic 的解决方案。不过，希望我能帮助您理解为什么会发生这种情况。

【讨论】：

【解决方案2】：

只是为了一个不同的答案：你也可以试试这个

average_score_for_course = str(((quizzes_weight * quizzes_average) + 
(projects_weight * projects_average) + (activities_weight * 
activities_average) + (attendance_weight * attendance_average) + 
(exams_weight * exams_average)) * 100)+"%"

print("Hi",student_name +",","\nYou have a", 
average_score_for_course,"in your", course_name,"course.")

将结果更改为字符串并将“%”连接到它。

【讨论】：

【解决方案3】：

print("Hi" + str(student_name) +"," + "\nYou have a" + str(average_score_for_course) +"% in your" + str(course_name) + "course.")

对我来说，我会尽量避免使用逗号，因为很难想象您的打印效果如何，为了安全起见，最好在打印前将“average_score_for_course”转换为 str。

【讨论】：

你在哪里解释？

【解决方案4】：

您可以使用要打印的 3 个变量来格式化字符串：

print("Hi {},\nYou have a {}% in your {} course".format(student_name, average_score_for_course, course_name))

【讨论】：

你在哪里解释？
例如，您可以链接到文档并引用它