def stopchineseword(segResult): if segResult!=None: segResult=segResult.split() if len(segResult)!=0: segResult=[word_item.split('/')[0] for word_item in segResult] file = open("stopwords.txt","r",encoding='utf-8') data = [] new_segResult=[] for i in file.readlines(): #从文件中读取数据并将其添加到列表中 data.append(i.strip()) for i in segResult: if i in data: #比较是否为停用词 continue else: new_segResult.append(i) return ' '.join(new_segResult) else: return " " else: return ' '

这是一个用于过滤中文停用词的函数，其输入参数为经过分词后的句子，输出为去除停用词后的句子。具体实现步骤如下：

1. 将分词结果按空格分割为单个词语；
2. 读取停用词表，将其中的词语添加到一个列表中；
3. 遍历分词结果中的每一个词语，如果该词语为停用词，则跳过该词语，否则将其添加到一个新的列表中；
4. 将新的列表中的词语用空格连接成一个字符串，并返回。

需要注意的是，该函数中的停用词表文件名为 "stopwords.txt"，需要提前准备好该文件并放置在与该函数脚本相同的目录下，而且该文件必须使用 UTF-8 编码。

相关问题

约瑟夫环改错class Node: def __init__(self,data): self.data=data self.next=Noneclass linklist: def __init__(self): self.head=None self.data=None def isEmpty(self): if self.head: return False else: return True def length(self): if self.isEmpty(): return 0 else: t = self.head n = 1 while t.next: if t.next == self.head: break t = t.next n = n + 1 return n def addhead(self,data): node = Node(data) if self.isEmpty(): self.head = node self.tail = self.head else: node.next = self.head self.head = node self.tail.next = self.head def addtail(self,data): node=Node(data) if self.isEmpty(): self.addhead(data) else: t=self.head n=1 l=self.length() while n<l: n=n+1 t=t.next t.next=node node.next=self.head self.tail=node def delete(self,index): if self.isEmpty(): print("The linked list is empty") else: t = self.head l = self.length() if index == 0: self.head = t.next self.tail.next = self.head elif index == l - 1: n = 1 while n < l - 1: t = t.next n = n + 1 t.next = self.head self.tail = t elif index > l - 1: print("Out of range") elif index < 0: print("Wrong operation") else: n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next.next t.next = a def insert(self,data,index): l = self.length() if index == 0 or self.isEmpty(): self.addhead(data) elif index >= l: self.addtail(data) else: node = Node(data) t = self.head n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next t.next = node node.next = a def search(self,a): t=self.head for i in range(a): t=t.next return t.data def form(self,datalist): self.addhead(datalist[0]) for i in range(1,len(datalist)): self.addtail(datalist[i]) t = self.head while t.next != self.head: t = t.nextn,p=map(int,input().split(' '))data=[]p=p-1for i in range(1,n+1): data.append(i)print(data)datalist=[]for i in range(len(data)): datalist.append(int(data[i]))link=linklist()link.form(datalist)a=pb=[]while link.length()>0: b.append(link.search(a)) link.delete(a) a=a+p while a>=link.length(): a=a-link.length()print(b)

改错如下：

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None

class LinkList:
    def __init__(self):
        self.head = None
        self.tail = None
    
    def isEmpty(self):
        if self.head:
            return False
        else:
            return True
    
    def length(self):
        if self.isEmpty():
            return 0
        else:
            t = self.head
            n = 1
            while t.next:
                if t.next == self.head:
                    break
                t = t.next
                n += 1
            return n
    
    def addhead(self, data):
        node = Node(data)
        if self.isEmpty():
            self.head = node
            self.tail = self.head
        else:
            node.next = self.head
            self.head = node
            self.tail.next = self.head
    
    def addtail(self, data):
        node = Node(data)
        if self.isEmpty():
            self.addhead(data)
        else:
            t = self.head
            n = 1
            l = self.length()
            while n < l:
                n += 1
                t = t.next
            t.next = node
            node.next = self.head
            self.tail = node
    
    def delete(self, index):
        if self.isEmpty():
            print("The linked list is empty")
        else:
            t = self.head
            l = self.length()
            if index == 0:
                self.head = t.next
                self.tail.next = self.head
            elif index == l - 1:
                n = 1
                while n < l - 1:
                    t = t.next
                    n += 1
                t.next = self.head
                self.tail = t
            elif index > l - 1:
                print("Out of range")
            elif index < 0:
                print("Wrong operation")
            else:
                n = 1
                while n < index:
                    t = t.next
                    n += 1
                a = t.next.next
                t.next = a
    
    def insert(self, data, index):
        l = self.length()
        if index == 0 or self.isEmpty():
            self.addhead(data)
        elif index >= l:
            self.addtail(data)
        else:
            node = Node(data)
            t = self.head
            n = 1
            while n < index:
                t = t.next
                n += 1
            a = t.next
            t.next = node
            node.next = a
    
    def search(self, a):
        t = self.head
        for i in range(a):
            t = t.next
        return t.data
    
    def form(self, datalist):
        self.addhead(datalist[0])
        for i in range(1, len(datalist)):
            self.addtail(datalist[i])
        t = self.head
        while t.next != self.head:
            t = t.next

n, p = map(int, input().split(' '))
data = [i for i in range(1, n+1)]
print(data)

datalist = []
for i in range(len(data)):
    datalist.append(data[i])

link = LinkList()
link.form(datalist)

a = p-1
b = []
while link.length() > 0:
    b.append(link.search(a))
    link.delete(a)
    a += p-1
    while a >= link.length():
        a -= link.length()

print(b)

优化提升下列代码效率：class User: def init(self): self.id = 0 self.perfect = 0 self.rank = 0 self.mk = -1 self.grade = [0, -1, -1, -1, -1, -1] def lt(self, other): if self.grade[0] != other.grade[0]: return self.grade[0] > other.grade[0] elif self.perfect != other.perfect: return self.perfect > other.perfect else: return self.id < other.id if name == "main": N, K, M = map(int, input().split()) p = [0] + list(map(int, input().split())) u = [None] * (N + 1) idx = [] for i in range(M): tmp, pid, tmpgrade = map(int, input().split()) if not u[tmp]: u[tmp] = User() u[tmp].id = tmp if tmpgrade != -1: u[tmp].mk = 1 else: tmpgrade = 0 if tmpgrade > u[tmp].grade[pid]: u[tmp].grade[pid] = tmpgrade if not idx.contains(tmp): idx.append(tmp) for i in range(len(idx)): for j in range(1, K + 1): if u[idx[i]].grade[j] >= 0: u[idx[i]].grade[0] += u[idx[i]].grade[j] if u[idx[i]].grade[j] == p[j]: u[idx[i]].perfect += 1 al = sorted([u[i] for i in idx if u[i].mk > 0]) for i in range(len(al)): if i == 0: al[i].rank = 1 else: if al[i].grade[0] == al[i - 1].grade[0]: al[i].rank = al[i - 1].rank else: al[i].rank = i + 1 for i in range(len(al)): print("{} {:05d}".format(al[i].rank, al[i].id), end="") for j in range(K + 1): if al[i].grade[j] >= 0: print(" {:d}".format(al[i].grade[j]), end="") else: print(" -", end="") if i != len(al) - 1: print()

首先，可以使用 set() 代替 idx 列表，因为我们只需要判断一个元素是否在集合中。这样可以减少重复的判断。

其次，在 User 类的初始化函数中，可以直接将属性设置为默认值，而不是在每个属性上进行赋值。

另外，在循环中，可以使用 enumerate() 函数代替 range() 函数和下标变量，这样可以避免手动维护下标变量。

最后，在计算排名时，可以使用 itertools.groupby() 函数实现，这样可以避免手动维护排名和比较。

下面是优化后的代码：

import itertools

class User:
    def __init__(self):
        self.id = 0
        self.perfect = 0
        self.rank = 0
        self.mk = -1
        self.grade = [0, -1, -1, -1, -1, -1]

    def lt(self, other):
        if self.grade[0] != other.grade[0]:
            return self.grade[0] > other.grade[0]
        elif self.perfect != other.perfect:
            return self.perfect > other.perfect
        else:
            return self.id < other.id

if __name__ == "__main__":
    N, K, M = map(int, input().split())
    p = [0] + list(map(int, input().split()))
    u = [None] * (N + 1)
    idx = set()

    for i in range(M):
        tmp, pid, tmpgrade = map(int, input().split())
        if not u[tmp]:
            u[tmp] = User()
            u[tmp].id = tmp
        if tmpgrade != -1:
            u[tmp].mk = 1
        else:
            tmpgrade = 0
        if tmpgrade > u[tmp].grade[pid]:
            u[tmp].grade[pid] = tmpgrade
        idx.add(tmp)

    for i, user in enumerate(u):
        if user and user.mk > 0:
            user.grade[0] = sum(user.grade[j] for j in range(1, K + 1) if user.grade[j] >= 0)
            user.perfect = sum(user.grade[j] == p[j] for j in range(1, K + 1))

    al = sorted([user for user in u if user and user.mk > 0], key=lambda x: (-x.grade[0], -x.perfect, x.id))
    for rank, group in itertools.groupby(al, key=lambda x: (x.grade[0], x.perfect)):
        for user in group:
            user.rank = rank
        for user in sorted(list(group), key=lambda x: x.id):
            print("{:d} {:05d}".format(user.rank, user.id), end="")
            for j in range(1, K + 1):
                if user.grade[j] >= 0:
                    print(" {:d}".format(user.grade[j]), end="")
                else:
                    print(" -", end="")
            print()