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初级

查询学员的报名课程列表

未完成
初级参考 完整示例代码供参考,建议自己理解后重新输入
def solve():
    from pyodide.http import open_url
    instructors_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/instructors.csv").read()
    courses_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/courses.csv").read()
    students_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/students.csv").read()
    enrollments_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/enrollments.csv").read()
    assignments_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/assignments.csv").read()
    submissions_csv = open_url("https://data.zuihe.com/dbd/education/state_D01/submissions.csv").read()
    import sqlite3
    import pandas as pd
    from io import StringIO

    conn = sqlite3.connect(':memory:')
    pd.read_csv(StringIO(enrollments_csv)).to_sql('enrollments', conn, index=False, if_exists='replace')
    pd.read_csv(StringIO(courses_csv)).to_sql('courses', conn, index=False, if_exists='replace')

    result = pd.read_sql_query("""
        SELECT c.title, e.progress, e.enrolled_at, e.completed_at
        FROM enrollments e
        JOIN courses c ON e.course_id = c.id
        WHERE e.student_id = 1
        ORDER BY e.enrolled_at
    """, conn)
    print(result.to_string(index=False))
    conn.close()

示例

输入
solve()
期望输出
title  progress         enrolled_at        completed_at
 Python从零到精通       100 2025-01-06 10:00:00 2025-02-10 18:00:00
     算法与数据结构        65 2025-01-20 09:00:00                None
    SQL数据库实战       100 2025-02-01 08:00:00 2025-03-05 20:00:00
Python数据分析实战        70 2025-03-01 09:00:00                None
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