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# encoding: utf8
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import time
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import pymysql
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import random
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last_names = "李，王，张，刘，陈，杨，黄，赵，周，吴，徐，孙，朱，马，胡，郭，林，何，高，梁，郑，罗，宋，谢，唐，韩，曹，许，邓，萧，冯，曾，程，蔡，彭，潘，袁，于，董，余，苏，叶，吕，魏，蒋，田，杜，丁，沈，姜，范，江，傅，钟，卢，汪，戴，崔，任，陆，廖，姚，方，金，邱，夏，谭，韦，贾，邹，石，熊，孟，秦，阎，薛，侯，雷，白，龙，段，郝，孔，邵，史，毛，常，万，顾，赖，武，康，贺，严，尹，钱，施，牛，洪，龚"
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last_names_list = last_names.split("，")
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course_names = "语文、数学、外语、历史、思想政治、地理、 化学、物理、生物、体育、美术、音乐、技术、微积分、体育、毛泽东思想概论、思想道德修养、高等数学、线性代数、概率论与数理统计、离散数学、计算机原理、人工智能、程序设计基础、面向对象程序设计、数字逻辑电路、电路电子技术、数据结构与算法、WEB程序设计、计算机组成与结构、操作系统、数据库系统原理、编译原理、计算机网络"
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course_names_list = course_names.split("、")
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# 创建mysql连接
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conn = pymysql.connect(user="root", password="cyh0110", database="SCT", host="127.0.0.1", port=3306)
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# 创建游标
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cursor = conn.cursor()
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sid_list = [] # 用于存储生成的sid
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cid_list = [] # 用于存储生成的cid
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def student_random_record():
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"""
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# 随机生成10000条学生表数据
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:return:
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"""
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year = time.localtime().tm_year # 获取当前系统时间的年份
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num = 1
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class_num = 1
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class_id = 1
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for i in range(10000):
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sid = "%d" % year + "%04d" % num
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sname = random.choice(last_names_list) + sid
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ssex = random.choice(["男", "女"])
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sage = random.randint(15, 35)
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sclass = "%d" % year + "%02d" % class_id
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sql = f"INSERT INTO student VALUES ('{sid}', '{sname}', '{ssex}', {sage}, '{sclass}')"
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cursor.execute(sql)
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sid_list.append(sid)
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if num == 2500:
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year += 1
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num = 1
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class_id = 1
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if class_num == 30:
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class_id += 1
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class_num = 1
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num += 1
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class_num += 1
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conn.commit()
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def course_random_record():
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"""
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随机生成1000条课程表数据
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:return:
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"""
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hours = [i for i in range(8, 192 + 1, 8)]
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for i in range(1000):
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cid = "%03d" % (i + 1)
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cname = random.choice(course_names_list)
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hour = random.choice(hours)
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credit = round(hour / 16, 2)
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sql = f"INSERT INTO course (cid, cname, credit, chours) VALUES ('{cid}', '{cname}', {credit}, {hour})"
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cursor.execute(sql)
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cid_list.append(cid)
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conn.commit()
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def sc_random_record():
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"""
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随机生成10000 * 30条以上选课表数据
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:return:
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"""
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for sid in sid_list:
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year = int(sid[:4]) # 取sid的前四位学年
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for i in range((year - time.localtime().tm_year + 1) * 16):
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cid = random.choice(cid_list)
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score = random.randint(0, 101)
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sql = f"INSERT INTO sc(sid, cid, score) VALUES ('{sid}', '{cid}', {score})"
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cursor.execute(sql)
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conn.commit()
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if __name__ == '__main__':
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student_random_record()
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course_random_record()
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sc_random_record()
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# 关闭数据库连接
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cursor.close()
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conn.close()
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