计算机二级（操作题）

 

 https://blog.csdn.net/qq_45726327/article/details/115042863

s = input("请输入一个字符串:")
print("{:*^30}".format(s))

https://blog.csdn.net/qq_52351158/article/details/122209848

 

 

 

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 = "")

 

 

 

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*****

 

 

fo = open("PY202.txt","w")
txt = input("请输入类型序列: ")
fruits = txt.split(" ")
d = {}
for i in fruits:
   d[i] = d.get(i,0)+1
ls = list(d.items())
ls.sort(key=lambda x:x[1], reverse=True)  # 按照数量排序
for k in ls:
   fo.write("{}:{}\n".format(k[0], k[1]))
fo.close()

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--------------------------大题001----------------------------------

 

 

 

 

 

 

 

#请在.....处填写多行表达式或语句
#可以修改其他代码

f = open("八十天环游地球.txt")
fo = open("八十天环游地区的章节.txt",'w')
for i in f:
    line = i.strip().split()
    if line[0][0]=='第' and '章' in line[0]:
        fo.write(i)
fo.close()
f.close()

 

 复习：

import jieba
f = open("八十天环游地球.txt")
datas = f.readlines()
l = []
for i in range(len(datas)):    #遍历每一行，用l数组存储每一个行的行数。
    line = datas[i].split('')
    if datas[i][0]=='第' and '章' in line[0]:
        l.append(i)
for i in range(len(l)):
    
    if i != len(l)-1:
        data = "".join(datas[l[i]:l[i+1]])   #所有章节的行数拼接
    else:
        data = "".join(datas[l[i]:])         #最后一章的处理

    s = data.split()[0]                      #章节名提取
    words = jieba.lcut(data)                 #jieba分词
    d ={}
    for y in words:
        if(len(y)<2):                        #词语长度不小于2的要求
            continue
        d[y]=d.get(y,0)+1                    #统计词语的次数
        lis = list(d.item())                 #将字典变成列表方便排序
        lis.sort(key = lambda x:x[1],reverse = True)#排序
        print(s,lis[0][0],lis[0][1])