二级 Python 考试基本操作题真题及参考代码解析 | 极客日志

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二级 Python 考试基本操作题真题及参考代码解析

二级 Python 考试基本操作部分历年真题与参考代码整理。内容覆盖字符串处理、列表操作、随机数生成、文件读写及基础算法逻辑等核心考点。每道题均提供题目素材与完整可运行代码，辅助考生熟悉考试题型与解题思路。

宁静发布于 2026/2/20更新于 2026/4/250 浏览

二级 Python 考试基本操作题真题及参考代码解析

概述

本部分整理了二级 Python 考试基本操作题的历年真题素材与完整参考代码。内容涵盖字符串处理、列表操作、随机数生成、文件读写及基础算法逻辑等核心考点。每道题均提供题目要求与可运行代码，辅助考生熟悉题型与解题思路。

第 1 套题

题目要求：导入 jieba 库，输入中文文本，计算字符数与分词数的比值并保留一位小数。

import jieba
txt = input("请输入一段中文文本:")
ls = jieba.lcut(txt)
print("{:.1f}".format(len(txt)/len(ls)))

第 2 套题

题目要求：输入一个数字，输出其 ASCII 码对应的前后字符组成的居中字符串。

n = eval(input("请输入一个数字:"))
print("{:+^11}".format(chr(n-1)+chr(n)+chr(n+1)))

第 3 套题

题目要求：输入正整数，输出右对齐且填充箭头的字符串。

n = eval(input("请输入正整数:"))
print("{:->20,}".format(n))

第 4 套题

题目要求：使用 jieba 分词，逆序打印每个词语。

import jieba
txt = input("请输入一段中文文本:")
ls = jieba.lcut(txt)
for i in ls[::-1]:
    print(i, end="")

第 5 套题

题目要求：设置随机种子，从品牌列表中随机抽取一个名称。

 random
brandlist = [, , , , ]
random.seed()
name = random.sample(brandlist, )
(name)

import jieba
s = input("请输入一个字符串")
n = len(s)
m = len(jieba.lcut(s))
print("中文字符数为{}，中文词语数为{}。".format(n, m))

ntxt = input("请输入 4 个数字 (空格分隔):")
nls = ntxt.split()
x0 = eval(nls[0])
y0 = eval(nls[1])
x1 = eval(nls[2])
y1 = eval(nls[3])
r = pow(pow(x1-x0, 2) + pow(y1-y0, 2), 0.5)
print("{:.2f}".format(r))

s = input("请输入一个字符串:")
print("{:=^20}".format(s))

n = eval(input("请输入数量："))
if n == 1:
    cost = n * 160
elif n <= 4:
    cost = n * 160 * 0.9
elif n <= 9:
    cost = n * 160 * 0.8
else:
    cost = n * 160 * 0.7
print("总额为:", cost)

a, b = 0, 1
while a <= 100:
    print(a, end=',')
    a, b = b, a + b

a = [3, 6, 9]
b = eval(input())
s = 0
for i in range(3):
    s += a[i] * b[i]
print(s)

import random
random.seed(123)
for i in range(10):
    print(random.randint(1, 999), end=",")

n = eval(input("请输入正整数:"))
print("{:*>15}".format(n))

a = [3, 6, 9]
b = eval(input())
c = []
for i in range(len(b)):
    c.append(a[i] + b[i])
print(c)

import random
random.seed(0)
s = 0
for i in range(5):
    n = random.randint(1, 97)
    s = s + pow(n, 2)
print(s)

n = eval(input("请输入正整数:"))
print("{:=^14}".format(n))

a = [3, 6, 9]
b = eval(input())
j = 1
for i in range(len(a)):
    b.insert(j, a[i])
    j += 2
print(b)

import random
random.seed(100)
s = 0
for i in range(3):
    s = s + pow(random.randint(1, 9), 3)
print(s)

s = input()
print("{:=>25,}".format(eval(s)))

s = input()
print(s[::-1], end="")
print(len(s))

a, b, c = eval(input())
ls = []
for i in range(c):
    ls.append(a + b * i)
print(ls)

s = input()
print("{:\"^30x}".format(eval(s)))

n = input()
s = "〇一二三四五六七八九"
for c in "0123456789":
    n = n.replace(c, s[int(c):int(c)+1])
print(n)

a, b, c = eval(input())
ls = []
for i in range(c):
    ls.append(str(a * (b ** i)))
print(",".join(ls))

num = input().split(",")
for i in num:
    print("{:>10}".format(i), end="")

scale = 0.0001
def calv(base, day):
    val = base * pow((1 + scale), day * 11)
    return val

print('5 年后的成就值是{}'.format(int(calv(1, 5 * 365))))
year = 1
while calv(1, year * 365) < 100:
    year += 1
print('{}年后成就值是 100'.format(year))

while True:
    try:
        a = eval(input('请输入一个正整数：'))
        if a > 0 and a % 1 == 0:
            print(a)
            break
        else:
            print("请输入正整数")
    except:
        print("请输入正整数")

n = input('请输入一个正整数:')
for i in range(1, eval(n) + 1):
    print('{:0>2}{}{}'.format(i, " ", ">" * (i)))

std = [['张三', 90, 87, 95], ['李四', 83, 80, 87], ['王五', 73, 57, 55]]
modl = "亲爱的{}, 你的考试成绩是：英语{}, 数学{}, Python 语言{}, 总成绩{}.特此通知."
for st in std:
    cnt = 0
    for i in range(1, 4):
        cnt += st[i]
    print(modl.format(st[0], st[1], st[2], st[3], cnt))

s = input("请输入一个正整数：")
cs = 0
for c in s:
    cs += int(c)
print('{:=^25}'.format(cs))

s = input("请输入中文和字母的组合：")
count = 0
for c in s:
    if "\u4e00" <= c <= "\u9fff":
        count += 1
print(count)

s = input("请输入一组数据：")
ls = s.split(",")
lt = []
for i in ls:
    lt.append(eval(i))
print(max(lt))

s = input("请输入一个小数：")
s = s[::-1]
cs = 0
for c in s:
    if c == '.':
        break
    cs += eval(c)
print('{:*>10}'.format(cs))

import time
t = input("请输入一个浮点数时间信息：")
s = time.ctime(eval(t))
ls = s.split()
print(ls[3].split(":")[0])

import random
s = input("请输入随机种子：")
ls = []
for i in range(26):
    ls.append(chr(ord('a') + i))
for i in range(10):
    ls.append(chr(ord('0') + i))
random.seed(eval(s))
for i in range(10):
    for j in range(8):
        print(ls[random.randint(0, 35)], end='')
    print()

ls = eval(input())
s = ""
for item in ls:
    if type(item) == type("香山"):
        s += item
print(s)

import random
random.seed(25)
n = random.randint(1, 101)
for m in range(1, 7):
    x = eval(input("请输入猜测数字："))
    if x == n:
        print("恭喜你，猜对了！")
        break
    elif x > n:
        print("大了，再试试")
    else:
        print("小了，再试试")
if m == 6:
    print("谢谢！请休息后再猜")

def f(n):
    s = 0
    if n % 2 == 1:
        for i in range(1, n + 1, 2):
            s += 1 / i
    else:
        for i in range(2, n + 1, 2):
            s += 1 / i
    return s

n = int(input())
print("{:.2f}".format(f(n)))

n = eval(input("请输入一个整数："))
for i in range(1, n):
    for j in range(1, n):
        if i <= j < n:
            print(j, end=" ")
    print()

s = input("请输入 5 个小写字母：")
s = s.upper()
print(','.join(s[::-1]))

import random
n = eval(input())
random.seed(100)
for i in range(1, 11):
    if i < 10:
        print(random.randint(1, n), end=',')
    else:
        print(random.randint(1, n))

a = input("请输入填充符号：")
s = "PYTHON"
print("{0:{1}^30}".format(s, a))

myinput = input("请输入：")
ls = myinput.split(',')
s = 0
for c in ls:
    if c.strip(" ").isdigit():
        s += eval(c)
print("数字和是：" + str(s))

f = open('data.txt', 'r')
ls = []
for line in f:
    for c in line:
        if c not in ls:
            ls.append(c)
f.close()
print(len(ls))

f = eval(input("请输入一个浮点数:"))
print("浮点数是:{:>10.2f}".format(f))

h, w = eval(input("请输入起始英文字母的序号和连续输出的个数，逗号隔开:"))
cstr = ''
for i in range(w):
    c = chr(97 + h + i)
    cstr += c
print(cstr)

import random as r
r.seed(1)
s = input("请输入三个整数 n,m,k：")
slist = s.split(",")
for i in range(eval(slist[0])):
    print(r.randint(eval(slist[2]), eval(slist[1])))

sinfo = input()
s = sinfo.split(",")
print("姓名，年龄")
for strname in s:
    sname = strname[:-2]
    sage = strname[-2:]
    print("{},{}".format(sname, sage))

import random
random.seed(20)
sum_val = 0
for i in range(10):
    n = random.randint(1, 20)
    sum_val += n
    print('第{}个数:{}'.format(i, n))
print("10 个随机数的平均数是:{}".format(round(sum_val / 10, 1)))

def allFactor(n):
    if n <= 1:
        return [n]
    if n <= 3:
        return [1, n]
    i = 1
    rlist = []
    while i <= n:
        if n % i == 0:
            rlist.append(i)
        i += 1
    return rlist

try:
    n = eval(input("请输入一个正整数:"))
    print("整数{}的因子是:{}".format(n, allFactor(n)))
except:
    print("输入错误!")

f = input("请输入一个单词:")
print("{}".format("=" * 20))
print("|{:*^18}|".format(f))

def vfun(x, b):
    for i in b:
        x += eval(i)
    return x

lc = input().split(',')
print(vfun(10, lc))

ss = input("请输入一个字符串：")
for s in ss:
    if ord('A') <= ord(s) <= ord('z'):
        print(s.upper(), end="")
    else:
        continue

pi = 3.14159
r = eval(input("请输入圆的半径："))
print("圆的半径是{:=^10.2f}，面积是{:*>10.2f}".format(r, pi * r * r))

ls = eval(input())
print("输入是:{},平均数是:{}".format(ls, sum(list(ls)) / len(ls)))

s = input("请输入字符串：")
for c in s:
    zimu = "qwertyuiopasdfghjklzxcvbnm"
    if c in zimu:
        pass
    else:
        print("不全是英文小写")
        break
else:
    print("全部是英文小写")

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