python模拟学生选课

好的，让我们来模拟一个学生选课的程序吧！

首先，我们需要定义一些课程和学生对象。我们可以用类来表示它们。每个课程有一个名称和一个容量，每个学生有一个姓名和一个已选课程的列表。

class Course:
    def __init__(self, name, capacity):
        self.name = name
        self.capacity = capacity
        self.students = []

    def add_student(self, student):
        if len(self.students) < self.capacity:
            self.students.append(student)
            return True
        else:
            return False

class Student:
    def __init__(self, name):
        self.name = name
        self.courses = []

    def add_course(self, course):
        self.courses.append(course)

接下来，我们可以定义一些课程和学生。

math = Course("Math", 2)
science = Course("Science", 1)
history = Course("History", 3)

john = Student("John")
mary = Student("Mary")

现在我们有了一些课程和学生，我们需要实现一个选课函数，使学生可以选择他们想要的课程。

def enroll(student, course):
    if course.add_student(student):
        student.add_course(course)
        print(f"{student.name} has successfully enrolled in {course.name}.")
    else:
        print(f"Sorry, {course.name} is full. {student.name} cannot enroll in this course.")

最后，我们可以让学生选择他们想要的课程。

enroll(john, math)   # John has successfully enrolled in Math.
enroll(mary, science)   # Mary has successfully enrolled in Science.
enroll(john, science)   # Sorry, Science is full. John cannot enroll in this course.
enroll(mary, math)   # Sorry, Math is full. Mary cannot enroll in this course.
enroll(john, history)   # John has successfully enrolled in History.
enroll(mary, history)   # Mary has successfully enrolled in History.

现在，我们的程序就可以模拟学生选课了！