shao

实验 学生成绩管理系统/1.1 列表方式打印质数.py

@@ -0,0 +1,11 @@
+l = [i for i in range(2,30)]
+print(l)
+for i in range(2,30):
+    for j in range(2,i):
+        if i%j ==0:
+            print(f"{i} is not zhishu")
+            l.remove(i)
+            break
+print(l)
+
+

实验 学生成绩管理系统/1.1 打印99 乘法表.py

@@ -0,0 +1,4 @@
+for i in range(1,9):
+    for j in range(1,i+1):
+        print(f"{i}*{j} = {i*j} ", end = "")
+    print("")

实验 学生成绩管理系统/1.1 猜数字.py

@@ -0,0 +1,25 @@
+# 随机数的处理
+# 综合练习---猜数字
+
+# 计算机要求用户输入数值范围的最小值和最大值。
+# 计算机随后“思考”出在这个范围之内的一个随机数，
+# 并且重复地要求用户猜测这个数，直到用户猜对了。
+# 在用户每次进行猜测之后，计算机都会给出一个提示，
+# 并且会在这个过程的最后显示出总的猜测次数。这
+# 个程序包含了几种类型的我们学过的 Python 语句，例如，输入语句、输出语句、赋值语句、循环和条件语句
+import random
+
+smaller = int(input("Enter the smaller number: "))
+larger = int(input("Enter the larger number: "))
+myNumber = random.randint(smaller, larger)
+count = 0
+while True:
+    count += 1
+    userNumber = int(input("Enter your guess: "))
+    if userNumber < myNumber:
+        print("Too small")
+    elif userNumber > myNumber:
+        print("Too large")
+    else:
+        print("You've got it in", count, "tries!")
+        break

实验 学生成绩管理系统/Python语言文件操作--学生成绩管理系统.py

@@ -0,0 +1,260 @@
+# -*- coding: UTF-8 -*-
+# https://blog.csdn.net/tian_123456789/article/details/78914692
+
+import os
+import re
+import numpy as np
+
+class Student: #定义一个学生类
+    def __init__(self):
+        self.name = ''
+        self.ID =''
+        self.score1 = 0
+        self.score2 = 0
+        self.score3 = 0
+        self.sum = 0
+
+
+def searchByID(stulist, ID): #按学号查找看是否学号已经存在
+    for item in stulist:
+        if item.ID == ID:
+            return True
+
+def Add(stulist,stu): #添加一个学生信息
+    if searchByID(stulist, stu.ID) == True:
+        print("学号已经存在！")
+        return False
+    stulist.append(stu)
+    print (stu.name,stu.ID, stu.score1, stu.score2, stu.score3, stu.sum)
+    print ("是否要保存学生信息？")
+    nChoose = input("Choose Y/N")
+    if nChoose == 'Y' or nChoose == 'y':
+        file_object = open("students.txt", "a")
+        file_object.write(stu.ID)
+        file_object.write(" ")
+        file_object.write(stu.name)
+        file_object.write(" ")
+        file_object.write(str(stu.score1))
+        file_object.write(" ")
+        file_object.write(str(stu.score2))
+        file_object.write(" ")
+        file_object.write(str(stu.score3))
+        file_object.write(" ")
+        file_object.write(str(stu.sum))
+        file_object.write("\n")
+        file_object.close()
+        print (u"保存成功！")
+
+def Search(stulist, ID): #搜索一个学生信息
+    print (u"学号   姓名    语文    数学    英语    总分")
+    count = 0
+    for item in stulist:
+        if item.ID == ID:
+            print (item.ID, '\t' ,item.name,'\t', item.score1,'\t',item.score2, '\t', item.score3, '\t',item.sum)
+            break
+        count = 0
+    if count == len(stulist):
+        print ("没有该学生学号！")
+
+def Del(stulist, ID): #删除一个学生信息
+    count = 0
+    for item in stulist:
+        if item.ID == ID:
+            stulist.remove(item)
+            print ("删除成功！")
+            break
+        count +=1
+    # if count == len(stulist):
+    #   print "没有该学生学号！"
+    file_object = open("students.txt", "w")
+    for stu in stulist:
+        print (stu.ID, stu.name, stu.score1,stu.score2, stu.score3, stu.sum)
+        file_object.write(stu.ID)
+        file_object.write(" ")
+        file_object.write(stu.name)
+        file_object.write(" ")
+        file_object.write(str(stu.score1))
+        file_object.write(" ")
+        file_object.write(str(stu.score2))
+        file_object.write(" ")
+        file_object.write(str(stu.score3))
+        file_object.write(" ")
+        file_object.write(str(stu.sum))
+        file_object.write("\n")
+        file_object.close()
+    #   print "保存成功！"
+    file_object.close()
+def Change(stulist, ID):
+    count = 0
+    for item in stulist:
+        if item.ID == ID:
+            stulist.remove(item)
+            file_object = open("students.txt", "w")
+            for stu in stulist:
+                #print li.ID, li.name, li.score
+                file_object.write(stu.ID)
+                file_object.write(" ")
+                file_object.write(stu.name)
+                file_object.write(" ")
+                file_object.write(str(stu.score1))
+                file_object.write(" ")
+                file_object.write(str(stu.score2))
+                file_object.write(" ")
+                file_object.write(str(stu.score3))
+                file_object.write(" ")
+                file_object.write(str(stu.sum))
+                file_object.write("\n")
+            #   print "保存成功！"
+            file_object.close()
+            stu = Student()
+            stu.name = input("请输入学生的姓名")
+            while True:
+                stu.ID = input("请输入学生的ID")
+                p = re.compile('^[0-9]{3}$')
+                if p.match(stu.ID):
+                    break
+                else:
+                    print ("输入的有错误！")
+            while True:
+                stu.score1 = int(input("请输入学生语文成绩"))
+                if stu.score1 <= 100 and stu.score1 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            while True:
+                stu.score2 = int(input("请输入学生数学成绩"))
+                if stu.score2 <= 100 and stu.score2 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            while True:
+                stu.score3 = int(input("请输入学生英语成绩"))
+                if stu.score3 <= 100 and stu.score3 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            stu.sum = stu.score1 + stu.score2 + stu.score3
+            Add(stulist,stu)
+def display(stulist): #显示所有学生信息
+    print (u"学号   姓名    语文    数学    英语    总分")
+    for item in stulist:
+        print (item.ID, '\t' ,item.name,'\t', item.score1,'\t',item.score2, '\t', item.score3, '\t',item.sum)
+
+def Sort(stulist): #按学生成绩排序
+    Stu = []
+    sum_count = []
+    for li in stulist:
+        temp = []
+        temp.append(li.ID)
+        temp.append(li.name)
+        temp.append(int(li.score1))
+        temp.append(int(li.score2))
+        temp.append(int(li.score3))
+        temp.append(int(li.sum))
+        sum_count.append(int(li.sum))
+        Stu.append(temp)
+
+    #print sum_count
+    #print Stu;
+    #print stulist
+    insertSort(sum_count, stulist)
+    #print stulist;
+    display(stulist)
+
+def insertSort(a, stulist):
+    for i in range(len(a)-1):
+        #print a,i
+        for j in range(i+1,len(a)):
+            if a[i]<a[j]:
+                temp = stulist[i]
+                stulist[i] = stulist[j]
+                stulist[j] = temp
+    #return a
+
+def Init(stulist):  #初始化函数
+    print ("初始化......")
+    file_object = open('students.txt', 'r')
+    for line in file_object:
+        stu = Student()
+        line = line.strip("\n")
+        s = line.split(" ")
+        stu.ID = s[0]
+        stu.name = s[1]
+        stu.score1 = s[2]
+        stu.score2 = s[3]
+        stu.score3 = s[4]
+        stu.sum = s[5]
+        stulist.append(stu)
+    file_object.close()
+    print ("初始化成功！")
+    main()
+
+def main(): #主函数 该程序的入口函数
+    while True:
+        print ("*********************")
+        print (u"--------菜单---------")
+        print (u"增加学生信息--------1")
+        print (u"查找学生信息--------2")
+        print (u"删除学生信息--------3")
+        print (u"修改学生信息--------4")
+        print (u"所有学生信息--------5")
+        print (u"按照分数排序--------6")
+        print (u"退出程序------------0")
+        print ("*********************")
+
+        nChoose = input("请输入你的选择：")
+        if nChoose == "1":
+            stu = Student()
+            stu.name = input("请输入学生的姓名")
+            while True:
+                stu.ID = input("请输入学生的ID")
+                p = re.compile('^[0-9]{3}$')
+                if p.match(stu.ID):
+                    break
+                else:
+                    print ("输入的有错误！")
+            while True:
+                stu.score1 = int(input("请输入学生语文成绩"))
+                if stu.score1 <= 100 and stu.score1 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            while True:
+                stu.score2 = int(input("请输入学生数学成绩"))
+                if stu.score2 <= 100 and stu.score2 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            while True:
+                stu.score3 = int(input("请输入学生英语成绩"))
+                if stu.score3 <= 100 and stu.score3 > 0 :
+                    break
+                else:
+                    print ("输入的学生成绩有错误！")
+            stu.sum = stu.score1 + stu.score2 + stu.score3
+            Add(stulist,stu)
+
+        if nChoose == '2':
+            ID = input("请输入学生的ID")
+            Search(stulist, ID)
+
+        if nChoose == '3':
+            ID = input("请输入学生的ID")
+            Del(stulist, ID)
+        if nChoose == '4':
+            ID = input("请输入学生的ID")
+            Change(stulist, ID)
+
+        if nChoose == '5':
+            display(stulist)
+
+        if nChoose == '6':
+            Sort(stulist)
+
+
+        if nChoose == '0':
+            break
+
+if __name__ == '__main__':
+    stulist =[]
+Init(stulist)

实验 学生成绩管理系统/students.txt

@@ -0,0 +1 @@
+123 a 12 23 13 48

实验 学生成绩管理系统/猪肉价格.py

@@ -0,0 +1,38 @@
+import matplotlib.pyplot as plt
+import numpy as np
+import json, time, requests, os
+
+url = "https://zhujia.zhuwang.cc/api/chartData?areaId=-1&aa=%d"% int(time.time()*1000)
+
+header = {'User-Agent': 'Mozilla/5.0'}
+html = requests.get(url, headers=header).text
+
+j0 = json.loads(html)
+
+priceList = []
+
+print("***********",j0.keys())
+
+if not os.path.exists("猪肉价格"):
+    os.mkdir("猪肉价格")
+
+# j0['pig_in'][i], j0['pig_local'][i], j0['maizeprice'][i], j0['bean'][i]
+for item in j0:
+    if item != "time":
+        f = open("猪肉价格/"+item+'.txt', 'w+')
+        for i in range(366):
+            f.write("%.2f\n" % float(j0[item][i]))
+        f.close()
+        plt.figure(item)
+        plt.title(item)
+        plt.plot(j0[item])
+        plt.xlabel("时间")
+        plt.ylabel("元/公斤")
+        plt.xlim([0, 366])
+        plt.savefig("猪肉价格/"+item + '.png', dpi=600)
+    else:
+        f = open("猪肉价格/"+item+'.txt', 'w+')
+        for i in range(4):
+            for j in range(3):
+                f.write("%s" % j0[item][i][j])
+            f.write("\n")

实验 学生成绩管理系统/猪肉价格/bean.txt

@@ -0,0 +1,366 @@
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实验 学生成绩管理系统/猪肉价格/maizeprice.txt

@@ -0,0 +1,366 @@
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实验 学生成绩管理系统/猪肉价格/pig_in.txt

@@ -0,0 +1,366 @@
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实验 学生成绩管理系统/猪肉价格/pig_local.txt

@@ -0,0 +1,366 @@
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实验 学生成绩管理系统/猪肉价格/pigprice.txt

@@ -0,0 +1,366 @@
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实验 学生成绩管理系统/猪肉价格/pork.txt

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实验 学生成绩管理系统/猪肉价格/time.txt

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