产生习题并用文件存储、生成100以内的加法/减法算式基、批改练习并存储

好的，我可以为您完成这个任务。以下是具体的实现步骤：

1. 产生习题

我可以通过随机生成数字的方式来产生加法和减法的算式，例如：

import random

# 生成加法算式
num1 = random.randint(1, 100)
num2 = random.randint(1, 100)
answer = num1 + num2
problem = f"{num1} + {num2} = "

# 生成减法算式
num1 = random.randint(1, 100)
num2 = random.randint(1, num1)
answer = num1 - num2
problem = f"{num1} - {num2} = "

2. 用文件存储习题

我可以将生成的习题写入一个文本文件中，例如：

with open("problems.txt", "w") as f:
    for i in range(100):
        num1 = random.randint(1, 100)
        num2 = random.randint(1, 100)
        answer = num1 + num2
        problem = f"{num1} + {num2} = "
        f.write(f"{problem}\n")

3. 生成习题答案并用文件存储

同样地，我可以将习题答案也写入一个文本文件中，例如：

with open("answers.txt", "w") as f:
    with open("problems.txt", "r") as f2:
        for line in f2:
            problem = line.strip()
            num1, num2 = map(int, problem.split(" + "))
            answer = num1 + num2
            f.write(f"{answer}\n")

4. 批改练习并存储

最后，我可以读取学生提交的答案文件和正确答案文件，逐行进行比对并计算得分，最后将得分写入一个文本文件中，例如：

with open("student_answers.txt", "r") as f1, open("answers.txt", "r") as f2, open("scores.txt", "w") as f3:
    for i, (line1, line2) in enumerate(zip(f1, f2)):
        student_answer = line1.strip()
        correct_answer = line2.strip()
        score = 0 if student_answer != correct_answer else 1
        f3.write(f"Question {i+1}: {score}\n")

以上就是实现的步骤，您可以根据自己的需求进行一些修改和优化。