2024年6月青少年软件编程Python等级考试试卷六级真题（含答案）分数：100 题数：38一、单选题(共25题，共50分)1. 运行下面代码的正确结果是（）with open("example.txt", "a") as file: file.write("I see you.")其中example.txt文件内容如下： This is an example.A. This is an example.B. I see you.C. This is an example.I see you.D. I see you.This is an example.标准答案：C2. 在Python中，以下哪个函数可以用于创建一个新的文件（）A. write( )B. create( )C. new( )D. open( )标准答案：D3. 运行下面代码的正确结果是（）filename = "example.txt"line_count = 0with open(filename, "r") as file: for line in file: line_count += 1print(f"The file 'example' has {line_count} lines.")其中example.txt文件内容如下： My Favorite AnimalOnce upon a time, I had a pet dog named Max.Max was the most obedient dog I knew.We played fetch in the park, went on long walks in the woods, and even took naps together on lazy afternoons.A. 4B. 3C. 2D. 1标准答案：A。
4. 运行下面代码的正确结果是（）with open("myfile.txt", "w") as out_file: out_file.write("This is my first Python program.")with open("myfile.txt", "r") as in_file: myfile = in_file.read()print(myfile)其中myfile.txt文件内容如下： Hello World!A. Hello World!B. This is my first Python program.C. Hello World!This is my first Python program.D. Hello World!This is my first Python program.标准答案：B5. 编写程序绘制如下图所示的直线，程序空白处应填（）import matplotlib.pyplot as pimport numpy as npx= np.array([0,1,2,____,4,5])p.plot(x,'o:r')p.show()A. 1B. 2C. 3D. 4标准答案：C。
6. 已知程序1绘制的图形如下图所示，要绘制相同的图形，请补全程序2空白（）程序1:import matplotlib.pyplot as pimport numpy as npx= np.array([0,1,0,1,0,1,0])p.plot(x,'o:r')p.show()程序2:import matplotlib.pyplot as pimport numpy as npx= np.array([3,4,3,____,3,4,3])p.plot(x,'o:r')p.show()A. 1B. 2C. 3D. 4标准答案：D7. 在命令行窗口分别运行以下代码，输出结果是（）>>>import numpy as np>>>np.full(6,'6')A. array(['6', '6', '6', '6', '6', '6']B. array([6, 6, 6, 6, 6, 6]C. 6, 6, 6, 6, 6, 6D. '6', '6', '6', '6', '6', '6'标准答案：A8. 运行以下关于二维数组读取的程序，输出结果是（）a=[[1,2,3],[4,5,6],[7,8,9]]print(a[1][2])A. 2B. 4C. 5D. 6标准答案：D。
9. 运行以下代码，绘制出来的第六个柱形图颜色是（）import matplotlib.pyplot as pimport numpy as npx=np.array(['a','b','c','d','e','f'])h=np.array([1,4,5,6,4,3])c=np.array(['red','blue','green'])p.bar(x=x,height=h,color=c)p.show()A. redB. blueC. greenD. black标准答案：C10. 关于JSON格式数据转为Python数据格式，运行以下程序，输出结果是（）import jsona='{"name": "张三", "age": 30, "city": "北京"}'b=json.loads(a)c=list(b.keys())d=list(b.values())print(d[2])A. ageB. cityC. 北京D. 30标准答案：C11. 下列哪个选项不能在SQLite数据库中运行（）A. 10B. '10'C. [10,11]D. None标准答案：C12. CREAT TABLE Users (id,name,password,role)关于上述语句，说法错误的是（）。
A. id作为唯一标识，约束条件为PRIMARY和NOT NULLB. name是可以重复的C. password的约束条件为NOT NULLD. role为一个不定长的字符串标准答案：B13. 关于以下代码，说法错误的是（）import sqlite3conn = sqlite3.connect('./mydb.sqlite')cur = conn.cursor()sql = '''INSERT INTO Users (name,password,role) VALUES (?,?,?)'''cur.execute(sql,('admin','123456','管理员'))cur.execute(sql,('admin','123456','管理员'))cur.execute(sql,('user','123456','普通用户'))mit()A. conn = sqlite3.connect('./mydb.sqlite')，如果mydb.sqlite不存在会自动创建B. cur = conn.cursor()，的作用是获取一个数据的游标C. sql = '''INSERT INTO Users (name,password,role) VALUES (?,?,?)'''中?的作用是占位符。
D. 运行结果会添加两个admin的管理员账号标准答案：D14. 执行下面程序后,选项中值为1的是（）n=3m=2dp=[[0 for i in range(n)]for j in range(m)]dp.append([0,0,n-m])dp.insert(-1,[n for i in range(n)])print(dp)A. dp[m][n]B. dp[n][m]C. dp[len(dp)-1][0]D. dp[m][0]标准答案：B15. 执行下面程序后，列表a的值可能是（）import randoma=[0]*6for i in range(1,6): tmp=random.randint(5,24) if tmp%2==0 or i%2==1: a[i]=a[i-1]+tmpprint(a)A. [0,9,29,50,0,20]B. [1,11,44,62,86,109]C. [0,8,14,21,39,0]D. [0,10,24,43,0,30]标准答案：A16. 题'data1.csv'文件的内容如下图，若要打印每个同学的数学成绩，划线处的代码是（）。
import csvfile=open('data1.csv')file1=csv.reader(file)next(file1)for i in file1: print(_______)A. i[1]B. i[2]C. i[3]D. file[2]标准答案：B17. 下面代码会查询users表中哪些人的年龄（）import sqlite3conn = sqlite3.connect('mydatabase.db')c = conn.cursor()c.execute("SELECT * FROM users WHERE age > ?", (30,))results = c.fetchall()for row in results: print(row)conn.close()A. 年龄等于30的人B. 年龄大于30的人C. 年龄小于30的人D. 所有人的年龄标准答案：B18. 以下代码，运行结果是（）class Person(): def __init__(self, name, age): self.name = name self.age = age def introduce(self): return f"My name is {self.name} and I am {self.age} years old."p = Person("Alice", 30)print(p.introduce())A. My name is Alice and I am 30 years old.B. My name is Person and I am 30 years old.C. My name is Alice and I am 0 years old.D. My name is 30 and I am Alice years old.标准答案：A。
19. 下列代码的输出结果是（）class MyClass(): def __init__(self): self.x = 10 self.y = 20 def add(self): return self.x * self.yobj = MyClass()。