锦中迎新管理系统

                import pandas as pd

                # 创建一个空的DataFrame
                students = pd.DataFrame(columns=['Name', 'ID', 'Major'])

                # 添加新记录
                def add_student(name, id, major):
                    new_row = {'Name': name, 'ID': id, 'Major': major}
                    students = students.append(new_row, ignore_index=True)
                    return students

                # 示例调用
                students = add_student('张三', '123456', 'Computer Science')
            

实习管理系统

                import matplotlib.pyplot as plt

                # 统计每个专业的学生数量
                major_counts = students['Major'].value_counts()

                # 绘制饼状图
                plt.pie(major_counts, labels=major_counts.index, autopct='%1.1f%%')
                plt.title('专业分布')
                plt.show()