用python做学生成绩管理系统，要求学期总数为8，课程总数为20，并输出最合理的教学计划到文档中

好的，我可以为您提供一些思路和代码示例来实现这个学生成绩管理系统。

首先，我们需要定义学生类和课程类，以及学期类和教学计划类。代码示例如下：

class Student:
    def __init__(self, name, id):
        self.name = name
        self.id = id
        self.grades = {}  # 存储该学生的成绩，{课程名: 分数}的字典

class Course:
    def __init__(self, name, id):
        self.name = name
        self.id = id

class Semester:
    def __init__(self, id):
        self.id = id
        self.courses = []  # 存储本学期的所有课程

class TeachingPlan:
    def __init__(self, id):
        self.id = id
        self.semesters = []  # 存储所有学期的教学计划

接下来，我们需要编写函数来读取学生和课程信息，以及计算学生成绩和生成教学计划。代码示例如下：

def read_students(filename):
    students = []
    with open(filename, 'r') as f:
        for line in f:
            name, id = line.strip().split(',')
            students.append(Student(name, id))
    return students

def read_courses(filename):
    courses = []
    with open(filename, 'r') as f:
        for line in f:
            name, id = line.strip().split(',')
            courses.append(Course(name, id))
    return courses

def calculate_grades(students, courses):
    for student in students:
        for course in courses:
            score = input(f"请输入{student.name}的{course.name}成绩：")
            student.grades[course.name] = int(score)

def generate_teaching_plan(teaching_plan):
    for i in range(8):
        semester = Semester(i+1)
        for j in range(20):
            course = Course(f"课程{j+1}", j+1)
            semester.courses.append(course)
        teaching_plan.semesters.append(semester)

def save_teaching_plan(teaching_plan, filename):
    with open(filename, 'w') as f:
        for semester in teaching_plan.semesters:
            f.write(f"第{semester.id}学期：\n")
            for course in semester.courses:
                f.write(f"{course.name}({course.id}) ")
            f.write("\n")

最后，我们可以调用这些函数来实现学生成绩管理系统：

# 读取学生和课程信息
students = read_students('students.csv')
courses = read_courses('courses.csv')

# 计算学生成绩
calculate_grades(students, courses)

# 生成教学计划
teaching_plan = TeachingPlan(1)
generate_teaching_plan(teaching_plan)

# 输出教学计划到文档中
save_teaching_plan(teaching_plan, 'teaching_plan.txt')

当然，这只是一个简单的示例，您可以根据具体需求进行修改和扩展。