test_grades= [[['peter', 'parker'], [80.0, 70.0, 85.0]], [['bruce', 'wayne'], [100.0, 80.0, 74.0]]] # new_stats= [[['peter', 'parker'], [80.0, 70.0, 85.0], 78.33333], # [['bruce', 'wayne'], [100.0, 80.0, 74.0], 84.666667]]] def avg(grades): return sum(grades)/len(grades) def get_stats(class_list): new_stats= [] for elt in class_list: new_stats.append([elt[0], elt[1], avg(elt[1])]) return new_stats ##### 为上面代码增加例外处理功能，使得能应对下面的数据： test_grades= [[['peter', 'parker'], [10.0, 5.0, 85.0]], [['bruce', 'wayne'], [10.0, 8.0, 74.0]], [['captain', 'america'], [8.0,10.0,96.0]], [['deadpool'], []]] ###### 并输出如下结果： new_stats=[[['peter', 'parker'], [10.0, 5.0, 85.0], 15.41666666], [['bruce', 'wayne'], [10.0, 8.0, 74.0], 13.83333334], [['captain', 'america'], [8.0, 10.0, 96.0], 17.5], [['deadpool'], [], 0.0]]

select csr.school_year 学年,csr.name 学期,cs.name 姓名,cs.code 学号,cs.grade 年级,cd.name 学院,cm.name 专业,ca.name 行政班,cj.lesson_no 课程号,tc.code 课程代码,tc.name 课程名称, listagg(ct.name,',') within group(order by ct.name) 授课教师, tc.credits 学分,cj.score_text 分数,cj.gp 绩点,xc.name 课程类别,xc.code 课程类别代码,hc.name 修读类别,xs.name 学生类别,pscj.score_text 平时成绩,qzcj.score_text 期中成绩, sycj.score_text 实验成绩,qmcj.score_text 期末成绩,zpcj.score_text 总评成绩,bkcj.score_text 补考成绩 from t_course_grades cj left join c_students cs on cs.id = cj.std_id left join c_semesters csr on csr.id = cj.semester_id left join t_courses tc on tc.id = cj.course_id left join c_departments cd on cd.id = cs.department_id left join c_majors cm on cm.id = cs.major_id left join c_adminclasses ca on ca.id = cs.adminclass_id left join xb_course_types xc on xc.id = cj.course_type_id left join hb_course_take_types hc on hc.id = cj.course_take_type_id left join xb_std_types xs on xs.id = cs.type_id left join t_lessons_teachers tlt on tlt.lesson_id=cj.lesson_id left join c_teachers ct on ct.id = tlt.teacher_id left join t_exam_grades bkcj on cj.id = bkcj.course_grade_id and bkcj.grade_type_id=4 left join t_exam_grades pscj on cj.id = pscj.course_grade_id and pscj.grade_type_id=3 left join t_exam_grades qzcj on cj.id = qzcj.course_grade_id and qzcj.grade_type_id=1 left join t_exam_grades zpcj on cj.id = zpcj.course_grade_id and zpcj.grade_type_id=7 left join t_exam_grades qmcj on cj.id = qmcj.course_grade_id and qmcj.grade_type_id=2 left join t_exam_grades sycj on cj.id = sycj.course_grade_id and sycj.grade_type_id=8 where cj.semester_id='243' and cs.code='21403186' order by cs.code

这是一条SQL语句，用于查询学生某学期的课程成绩及相关信息，其中包括学年、学期、姓名、学号、年级、学院、专业、行政班、课程号、课程代码、课程名称、授课教师、学分、分数、绩点、课程类别、课程类别代码、修读...

优化并完善以下程序with open('rawscore.txt', 'r') as f: lines = f.readlines() students = []for line in lines: parts = line.strip().split() # 分割字符串 student = { 'id': parts[0], 'name': parts[1], 'scores': [int(x) for x in parts[2:]] # 将成绩转换为整数 } students.append(student) for student in students: scores = student['scores'][:3] # 取前3门课程的成绩 avg_score = sum(scores) / len(scores) # 计算平均分 student['avg_score'] = avg_score # 设置参数weight_major = 0.7 # 专业课成绩所占比例 weight_moral = 0.3 # 德育成绩所占比例 num_grades = 5 # 奖学金等级数 num_winners = [10, 20, 30, 40, 50] # 各等级获奖人数 # 根据综合成绩排序 for i in range(len(students)): for j in range(len(students) - i - 1): if students[j]['avg_score'] < students[j+1]['avg_score']: students[j], students[j+1] = students[j+1], students[j]# 输出获奖名单 for i in range(num_grades): print(f'第{i+1}等奖：') for j in range(num_winners[i]): student = students[j] score_major = student['avg_score'] * weight_major score_moral = student['scores'][3] * weight_moral score_total = score_major + score_moral if j == 0: print(f' {j+1}. {student["name"]}({student["id"]})，综合成绩：{score_total:.2f}，专业课平均分：{student["avg_score"]:.2f}，德育成绩：{student["scores"][3]:.2f}，获得一等奖学金') elif j < num_winners[i-1]: print(f' {j+1}. {student["name"]}({student["id"]})，综合成绩：{score_total:.2f}，专业课平均分：{student["avg_score"]:.2f}，德育成绩：{student["scores"][3]:.2f}，获得其他奖学金') else: break

for i in range(num_grades): print(f'第{i+1}等奖：') for j in range(num_winners[i]): student = students[j] score_major = student['avg_score'] * weight_major score_moral = student['scores'][3] * ...

cetys_grades

cetys_grades 我们大学的网站……不漂亮。只是检查你的成绩在移动设备中是一个痛苦的过程。这就是我建立这个网站的原因。通过“简单地”抓取原始网站，实现更清洁的移动优先设计。目前该网站只显示成绩，但...

Usos_grades_scrapping

【标题】"Usos_grades_scrapping"是一个项目，它主要关注使用Python编程语言来抓取和处理在线教育平台Usos的学生成绩数据。这个项目可能是为了帮助学生、教师或者管理员自动化收集和分析成绩数据，从而提高效率并...

DM_Romantic_relationship_effecting_grades：CIS 9660-数据挖掘类项目

该项目“DM_Romantic_relationship_effecting_grades”是针对CIS 9660课程的数据挖掘实践，旨在探讨浪漫关系对学生学业成绩的影响。通过使用Jupyter Notebook这一强大的数据分析工具，我们可以深入理解数据、进行...

Java程序print_grades：输入验证与循环控制

文件名称列表中提到的'print_grades-master'可能是指包含该Java程序代码的项目或压缩包的名称。" 知识点: 1. Java程序设计基础：该程序展示了Java的基本语法和逻辑控制结构，包括条件判断和循环控制。 2. 输入...

修改一下这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if name == 'main': if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')

这段代码需要进行缩进，以便在函数... grades = [] for n in range(num): score = random.randint(0, 100) grades.append(score) return grades # 调用函数，生成10个随机成绩 scores = grade(10) print(scores)

import java.sql.*; import java.util.Scanner; public class keshe { public static String stu_name; public static String Enrollment_time; public static String Faculties; public static String majors; public static String stu_class; public static String stu_num;//学号 public static String Course; public static String fir_sem; public static String sec_sem; public static String thr_sem; public static String fou_sem; public static String fiv_sem; public static String six_sem; public static String sev_sem; public static String eig_sem; static Connection conn; static Statement stmt = null; public static void main(String[] args) throws SQLException { String url = "jdbc:mysql://localhost:3306/student"; String username = "root"; String password = "qwj1514399005"; try { Class.forName("com.mysql.cj.jdbc.Driver"); } catch (Exception e) { e.printStackTrace(); } try { conn = DriverManager.getConnection(url, username, password); stmt = conn.createStatement(); } catch (Exception e) { e.printStackTrace(); } } //插入课程名字和成绩 public static void Insert_course() throws SQLException { try { PreparedStatement prestmt = conn.prepareStatement("INSERT INTO Course_grades(course,fir_sem,sec_sem,thr_sem,fou_sem,fiv_sem,six_sem,sev_sem,eig_sem,stu_name,stu_num)VALUES (?, ?, ?, ?, ?,?, ?, ?, ?, ?,?)"); System.out.println("分别输入插入的课程名，第一学期成绩，第二学期成绩，第三学期成绩，第四学期成绩，第五学期成绩，第六学期成绩，第七学期成绩，第八学期成绩，学生姓名，学号"); Scanner scan = new Scanner(System.in); Course = scan.nextLine(); fir_sem = scan.nextLine(); sec_sem = scan.nextLine(); thr_sem = scan.nextLine(); fou_sem = scan.nextLine(); fiv_sem = scan.nextLine(); six_sem = scan.nextLine(); sev_sem = scan.nextLine(); eig_sem = scan.nextLine(); stu_name = scan.nextLine(); stu_num = scan.nextLine(); prestmt.setString(1,Course ); prestmt.setString(2,fir_sem ); prestmt.setString(3,sec_sem ); prestmt.setString(4,thr_sem ); prestmt.setString(5,fou_sem ); prestmt.setString(6,fiv_sem ); prestmt.setString(7,six_sem ); prestmt.setString(8,sev_sem ); prestmt.setString(9,eig_sem ); prestmt.setString(10,stu_name ); prestmt.setString(11,stu_num ); prestmt.executeUpdate(); prestmt.close(); System.out.println("插入学生课程成功"); }catch (Exception e){ e.printStackTrace(); System.out.println("插入出错"); } } 添加可以计算出所有人的总分和平均分，课程的平均分直接给出代码

ResultSet rs = stmt.executeQuery("SELECT course, AVG(fir_sem+sec_sem+thr_sem+fou_sem+fiv_sem+six_sem+sev_sem+eig_sem) AS avg_score FROM Course_grades GROUP BY course"); while (rs.next()) { System....

优化这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if name == 'main': while True: if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')

1. 函数名应该更具描述性，例如可以改为generate_random_grades。 2. 函数的参数应该更加灵活，例如可以增加一个参数，用于指定生成成绩的数量。 3. 函数中的循环可以使用列表推导式来代替，例如可以改为grades = ...

import requests from bs4 import BeautifulSoup import csv def get_html(url): try: r=requests.get(url) r.raise_for_status() r.encoding=r.apparent_encoding return r.text except: r="fail" return r def getGDP(ulist,html): soup=BeautifulSoup(html,"html.parser") trs=soup.find_all('tr') for tr in trs: list=[] for th in trs: ts=th.string if ts=='\n': continue list.append(ts) ulist.append(list) def saveGDP(ulist,s): flie_name='GRADES'+s+'.csv' with open(file_name,'a',errors='ignore',newline='')as f: f_csv=csv.writer(f) f_csv.writerows(ulist) def main(): s='1960' for i in range(62): unifo=[] url='https://www.kylc.com/stats/global/yearly/g_gdp/'+s+'.html' html=get_html(url) getGDP(unifo,html) saveGDP(unifo,s) s1=int(s) s1=s1+1 s=str(s1) ifname=="main": main()

这段代码是用来抓取全球各国每年的GDP数据，并将其保存为CSV文件的。其中主要包括以下几个函数： ... ... 3. saveGDP(ulist,s)：用来将提取到的GDP数据保存为CSV文件的函数。通过csv库将数据写入到CSV文件中。...

CREATE VIEW CS_Student_Grades(Sno,Sname,Cname,Grade) AS SELECT S.Sno,Students.Sname,Cname,Grade FROM Students S,Student_Grades SG WHERE S.Sno=SG.Sno AND Speciality='计算机科学与技术';报错为无法绑定由多个部分组成的标识符 "Students.Sname"，为什么

CREATE VIEW CS_Student_Grades(Sno,Sname,Cname,Grade) AS SELECT S.Sno, S.Sname, SG.Cname, SG.Grade FROM Students S, Student_Grades SG WHERE S.Sno=SG.Sno AND Speciality='计算机科学与技术'; 这里...

创建一个Student类，包括姓名、ID 和成绩的属性。创建方法实现设置成绩。创建继承Student的子类，里面包含学生列表。它包括以下方法： get_average_grades：输出全班所有学生的平均成绩; find_student_grades：输入学生证并返回该学生的成绩; get_student_list：按降序输出学生的姓名和成绩。

total_grades += sum(student.grades) return total_grades / total_students def find_student_grades(self, student_id): for student in self.student_list: if student.student_id == student_id: return...

test_sql=""" CREATE TABLE IF NOT EXISTS user_students( id INT auto_increment PRIMARY KEY, name varchar(20) not null, sex char(2) not null, age int(2) not null, banji varchar(20) not null, phonenumber char(11) not null, password varchar(20) not null )ENGINE=innodb DEFAULT CHARSET=utf8; CREATE TABLE IF NOT EXISTS user_teacher( id INT auto_increment PRIMARY KEY, name varchar(20) not null, sex char(2) not null, age int(2) not null, salary int(11) not null, teach_course varchar(11) not null, qualification varchar(10) not null, phonenumber char(11) not null, password varchar(20) not null )ENGINE=innodb DEFAULT CHARSET=utf8; CREATE TABLE courses ( id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(50) NOT NULL, course_teacher VARCHAR(50) NOT NULL, credit INT NOT NULL, FOREIGN KEY (name) REFERENCES user_teacher(teach_course), FOREIGN KEY (course_teacher) REFERENCES user_teacher(name) ); CREATE TABLE enrollments ( id INT PRIMARY KEY AUTO_INCREMENT, student_id INT NOT NULL, course_id INT NOT NULL, FOREIGN KEY (student_id) REFERENCES user_students(id), FOREIGN KEY (course_id) REFERENCES courses(id) ); CREATE TABLE grades ( id INT PRIMARY KEY AUTO_INCREMENT, enrollment_id INT NOT NULL, grade FLOAT NOT NULL, FOREIGN KEY (enrollment_id) REFERENCES enrollments(id) ); """curs.execute(test_sql)哪错了，为什么数据库没有这些表

根据提供的 SQL 语句，可以看出这是创建数据库表的语句。但是，如果数据库中没有这些表，可能有以下原因： 1. 数据库连接失败：在执行这些 SQL 语句之前，需要先连接到数据库。如果连接失败，则无法执行 SQL 语句。...

改正#define CLASSES 3 #define GRADES 30 #include <stdio.h> #include <stdlib.h> #include <ctype.h> void enter_grades(int a[][GRADES]); void disp_grades(int g[][GRADES]); int get_grade(); int main() { int a[CLASSES][GRADES]; char ch; for (;;) { do { printf("(E)nter grades\n"); printf("(R)eport grades\n"); printf("(Q)uit\n"); ch = toupper(getchar()); } while (ch != 'E' && ch != 'R' && ch != 'Q'); switch (ch) { case 'E': enter_grades(a); break; case 'R': disp_grades(a); break; case 'Q': exit(0); } } return 0; } void enter_grades(int a[][GRADES]) { int t, i; for (t = 0; t < CLASSES; t++) { printf("class #%d:\n", t + 1); for (i = 0; i < GRADES; i++) { a[t][i] = get_grade(); } } } int get_grade(int i) { char s[80]; printf("enter grade for student #%d:\n", i + 1); fgets(s, sizeof(s), stdin); return atoi(s); } void disp_grades(int g[][GRADES]) { int t, i; for (t = 0; t < CLASSES; ++t) { printf("class #%d:\n", t + 1); for (i = 0; i < GRADES; ++i) { printf("grade for student #%d is %d\n", i + 1, g[t][i]); } } }

为了解决这个问题，您可以将 get_grade() 函数的参数 i 删除，因为在 enter_grades() 函数中已经通过循环的索引变量 i 来表示当前输入的学生序号了。下面是修改后的代码： c #define CLASSES 3 #...

改正#define classes 3 #define grades 30 #include <stdio.h> main( ) { void enter_grades()； void disp_grades( ); int get_grade( ); int a[classes] [grades];/定义二维数组，每行存放一个班学生成绩 / char ch; for( ; ;) { do { /菜单显示 / printf("(E)nter grades\n"); printf("(R)eport grades\n"); p r i n t f ( " ( Q ) u i t \ n " ) ; ch=toupper(getchar()); /将键盘输入字符转换为大写 / } while(ch!='E' && ch!='R' && ch!='Q'); switch(ch) { case 'E': enter_grades( ); b r e a k ; case 'R': 8 2 C语言程序设计下载 d i s p _ g r a d e s ( g r a d e ) ; b r e a k ; case 'Q': e x i t ( 0 ) ; } } } void enter_grades(a) int a[][grades]; { int t, i; for (t=0;t<classes;t++) { printf (" class #%d:\n",t+1); for (i=0; i<grades; i++) a [ t ] [ i ] = g e t _ g r a d e ( i ) ; } } int get_grades(num) int num; { char s[80]; printf("enter grade for student # %d:\n" ，n u m + 1 ) ; g e t s ( s ) ；/ 输入成绩 / r e t u r n ( a t o i ( s ) ) ; } void disp_grades(g) /显示学生成绩 / int g[ ][grades]; { int t，i ; for(t=0; t<classes; ++t) { printf("class # %d:\n"，t + 1 ) ; f o r ( i = 0 ; i < g r a d e s ; + + i ) printf("grade for student #%d is %d\n" ，i + 1 ，g [ t ] [ i ] ) ; } }

void enter_grades(int a[][GRADES]); void disp_grades(int g[][GRADES]); int get_grade(); int main() { int a[CLASSES][GRADES]; char ch; for (;;) { do { printf("(E)nter grades\n"); printf("(R)...

编写一个函数，向stus_list = [{"id": "0001", "name": "张三", "age": 18, "classes": "java","grades":100}, {"id": "0002", "name": "李四", "age": 23, "classes": "java","grades":100}, {"id": "0003", "name": "王五", "age": 20, "classes": "java","grades":100}]中添加新的学员信息

stus_list = [{"id": "0001", "name": "张三", "age": 18, "classes": "java","grades":100}, {"id": "0002", "name": "李四", "age": 23, "classes": "java","grades":100}, {"id": "0003", "name": "王五", ...

nodejs-threadpool:基于nodejs worker_threads的线程池。耗时操作或nodejs没有提供异步模式的api（例如解密、同步的文件api）都可以在线程池中执行，业务代码只需要返回一个Promise或async函数给线程池库，至于业务逻辑做什么操作，其实都可以，比如setTimeout，异步操作，async await等

nodejs-threadpool 基于nodejs worker_threads的线程池。耗时操作或nodejs没有提供异步模式的api（例如解密、同步的文件api）都可以在线程池中执行，业务代码只需要返回一个Promise或async函数给线程池库，至于业务逻辑做什么操作，其实都可以，比如setTimeout，异步操作，async await等（设计文档支持文件和字符串模式，需要导出一个函数。 1 提供的线程池类型 // 同步处理任务 class ThreadPool extends ThreadPool { constructor(options) { super({...options, sync: true}); } } // cpu型的线程池，线程数和cpu核数一样，不支持动态扩容 class CPUThreadPool extends Thr

相关推荐

debayer：自动对原始图像进行debayer处理，并可选择输出场景线性ace

test测试一下，加加积分

计算平均成绩和等级

cetys_grades

Usos_grades_scrapping

DM_Romantic_relationship_effecting_grades：CIS 9660-数据挖掘类项目

Java程序print_grades：输入验证与循环控制

修改一下这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if __name__ == '__main__': if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')

优化这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if __name__ == '__main__': while True: if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')

CREATE VIEW CS_Student_Grades(Sno,Sname,Cname,Grade) AS SELECT S.Sno,Students.Sname,Cname,Grade FROM Students S,Student_Grades SG WHERE S.Sno=SG.Sno AND Speciality='计算机科学与技术';报错为无法绑定由多个部分组成的标识符 "Students.Sname"，为什么

编写一个函数，向stus_list = [{"id": "0001", "name": "张三", "age": 18, "classes": "java","grades":100}, {"id": "0002", "name": "李四", "age": 23, "classes": "java","grades":100}, {"id": "0003", "name": "王五", "age": 20, "classes": "java","grades":100}]中添加新的学员信息

大家在看

GSM BSS 信令消息诠释-移动主被叫流程

running parsec 3 for arm architecture

基于QT和数据库的停车场管理系统 .zip

计算机控制实验74HC4051的使用

多文档应用程序MDI-vc++、MFC基础教程

最新推荐

免费的防止锁屏小软件，可用于域统一管控下的锁屏机制

RStudio中集成Connections包以优化数据库连接管理

管理建模和仿真的文件

Keil uVision5全面精通指南

flink提交给yarn19个全量同步MYsqlCDC的作业，flink的配置参数怎样设置

PHP博客旅游的探索之旅

"互动学习：行动中的多样性与论文攻读经历"

【单片机编程实战】：掌握流水灯与音乐盒同步控制的高级技巧

java 号码后四位用‘xxxx’脱敏

Arachne:实现UDP RIPv2协议的Java路由库

修改一下这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if name == 'main': if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')

优化这段代码import random def grade(): for n in range(10): #生成十个学生的成绩 j = random.randint(1,100) return j if name == 'main': while True: if 90 <= grade(): print('A') elif 80 <= grade() < 90: print('B') elif 70 <= grade() <= 79: print('C') else: print('D')