算法设计终版

main.py

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+from flask import Flask, jsonify, request
+import mysql.connector
+import random
+
+app = Flask(__name__)
+
+# 数据库连接配置
+db_config = {
+    'host': 'localhost',
+    'user': 'root',
+    'password': '123456',
+    'database': 'stu'
+}
+
+# 获取学生名单
+def get_students():
+    try:
+        connection = mysql.connector.connect(**db_config)
+        cursor = connection.cursor(dictionary=True)
+        cursor.execute("SELECT * FROM studentlist")
+        students = cursor.fetchall()
+        connection.close()
+        return students
+    except mysql.connector.Error as err:
+        print(f"Error: {err}")
+        return []
+
+
+# 更新学生积分
+def update_student_score(student_id, new_score):
+    try:
+        connection = mysql.connector.connect(**db_config)
+        cursor = connection.cursor()
+        cursor.execute("UPDATE studentlist SET 积分 = %s WHERE 学号 = %s", (new_score, student_id))
+        connection.commit()
+        print(f"Updated student_id {student_id} with new score {new_score}")
+        connection.close()
+    except mysql.connector.Error as err:
+        print(f"Error: {err}")
+
+
+# 根据积分设置权重，积分越高，权重越低
+def calculate_weights(students):
+    max_score = max([s['积分'] for s in students])
+    weights = [(max_score - s['积分'] + 1) for s in students]
+    return weights
+
+# 随机点名，积分越高，权重越低
+def pick_random_student(students):
+    weights = calculate_weights(students)
+    selected_student = random.choices(students, weights=weights, k=1)[0]
+    return selected_student
+
+# 增加课堂出席积分
+def add_attendance_score(student):
+    student['积分'] = student['积分'] + 1
+    update_student_score(student['学号'], student['积分'])
+
+# 回答问题后的积分更新
+def update_answer_score(student, repeated_correctly, answer_score):
+    if repeated_correctly:
+        student['积分'] = student['积分'] + 0.5
+    else:
+        student['积分'] = student['积分'] - 1
+    
+    student['积分'] += answer_score
+    update_student_score(student['学号'], student['积分'])
+
+# 获取随机点名学生
+@app.route('/get_random_student', methods=['GET'])
+def get_random_student():
+    students = get_students()
+    selected_student = pick_random_student(students)
+    return jsonify({'name': selected_student['姓名'], 'student_id': selected_student['学号']})
+
+# 更新出席积分
+@app.route('/update_attendance_score', methods=['POST'])
+def handle_attendance_score():
+    data = request.json
+    print(f"Received data: {data}")
+    student_id = data['student_id']
+    
+    students = get_students()
+    for student in students:
+        if student['学号'] == student_id:
+            add_attendance_score(student)            
+            break
+
+    return jsonify({'message': 'Attendance score updated', 'student_id': student_id})
+
+# 更新回答问题的积分
+@app.route('/update_answer_score', methods=['POST'])
+def handle_answer_score():
+    data = request.json
+    print(f"Received data: {data}")
+    student_id = data['student_id']
+    repeated_correctly = data['repeated_correctly']
+    answer_score = data['answer_score']  # 前端传来的回答得分（0.5到3之间）
+
+    students = get_students()
+    for student in students:
+        if student['学号'] == student_id:
+            update_answer_score(student, repeated_correctly, answer_score)
+            break
+
+    return jsonify({'message': 'Answer score updated', 'student_id': student_id})
+
+if __name__ == '__main__':
+    app.run(debug=True)