Pylint部分：

1. 补充module docstring，即文档顶部的简要说明 （我做的说明很简陋，只是为了通过pylint的检查而为之）
2. 优化了if-else-return，即删除了不必要的elif或else
3. 拆分了所有在同一行的模块引用（不同模块的引用需要放在不同行，以便理解和阅读）
4. 删除了部分没有被使用的引用（有的引用在文件A中被使用了，但import却写在了文件B，且文件B没有使用这些引用，而文件A引用了文件B，导致文件B的所有引用也被A引用，这似乎并不合理）
5. 修改了引用的顺序（os、random等系统引用应放在自定义模块引用的上方）
6. 修改了过长的代码，注释除外（每行限制在100个字符以内）
7. 优化了条件判断的判断符号：
is和is not 用于判断两个变量是否指向同一个位置
== 和 !=用于比较两个变量
8. 为每个py文件添加了"last new line"，删除了多余的尾部空行

Pylint提示了但是没有进行的操作：
1. 将字符串改为f-string的格式
因为f-string需要python3.6以上的版本，为了防止出现版本问题，故不做修改
2. 将所有函数内的return内容改为一致的类型
因为原有的代码逻辑已经确定，修改return的类型会导致方法的无法使用，故不做修改
3. 将标识符的格式改为"snake_case naming style"
标识符的修改内容过于庞大，且可能出现程序不可预见的错误，在pylint中重要等级为0，故不做修改
JSLint Part:
1. 提高代码的可读性：将部分超过80个字符的代码行拆解开（由于文字注释的存在，很多语句仅注释就超过了80个字符，此类型的语句行不做修改）
2. 用===与！==代替==与！=的判断
3. 将i++改为i+=1
4. 分离for循环中的let与var到其他行中，以适应JSLint在循环语句中对var和let的偏好
5. 给三元表达式外围添加圆括号，避免出现优先级的问题
6. 将正则表达式修改为JSLint要求的多行模式

疑问：
形如：
for (let i = 0; i < list.length; i+=1) {
的语句，JSLint报错： [JSLint was unable to finish] Unexpected 'let'.
但是网上搜索到的结果是ES6是支持let的使用的，暂且不做修改。

app/Article.py

@@ -1,3 +1,6 @@
+"""
+This module provides functions about article
+"""
 from WordFreq import WordFreq
 from wordfreqCMD import youdao_link, sort_in_descending_order
 from UseSqlite import InsertQuery, RecordQuery
@@ -46,7 +49,6 @@ def get_today_article(user_word_list, articleID):
     d1 = load_freq_history(path_prefix + 'static/frequency/frequency.p')
     d2 = load_freq_history(path_prefix + 'static/words_and_tests.p')
     d3 = get_difficulty_level(d1, d2)
-
     d = {}
     d_user = load_freq_history(user_word_list)
     user_level = user_difficulty_level(d_user, d3)  # more consideration as user's behaviour is dynamic. Time factor should be considered.

app/Login.py

@@ -1,3 +1,6 @@
+"""
+This module provides methods for Login
+"""
 import hashlib
 import string
 from datetime import datetime, timedelta
@@ -7,15 +10,17 @@ path_prefix = '/var/www/wordfreq/wordfreq/'
 path_prefix = './'  # comment this line in deployment
 
 def verify_pass(newpass,oldpass):
-    if(newpass==oldpass):
+    if newpass==oldpass:
         return True
 
-
 def verify_user(username, password):
     rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
     password = md5(username + password)
-    rq.instructions_with_parameters("SELECT * FROM user WHERE name=:username AND password=:password", dict(
-        username=username, password=password))  # the named style https://docs.python.org/3/library/sqlite3.html
+    rq.instructions_with_parameters(
+        "SELECT * FROM user WHERE name=:username AND password=:password",
+        dict(   # the named style https://docs.python.org/3/library/sqlite3.html
+            username=username,
+            password=password))
     rq.do_with_parameters()
     result = rq.get_results()
     return result != []
@@ -23,12 +28,19 @@ def verify_user(username, password):
 
 def add_user(username, password):
     start_date = datetime.now().strftime('%Y%m%d')
-    expiry_date = (datetime.now() + timedelta(days=30)).strftime('%Y%m%d') # will expire after 30 days
+    # will expire after 30 days
+    expiry_date = (datetime.now() + timedelta(days=30)).strftime('%Y%m%d')
     # 将用户名和密码一起加密，以免暴露不同用户的相同密码
     password = md5(username + password)
     rq = InsertQuery(path_prefix + 'static/wordfreqapp.db')
-    rq.instructions_with_parameters("INSERT INTO user VALUES (:username, :password, :start_date, :expiry_date)", dict(
-        username=username, password=password, start_date=start_date, expiry_date=expiry_date))
+    rq.instructions_with_parameters(
+        "INSERT INTO user VALUES (:username, :password, :start_date, :expiry_date)",
+        dict(
+            username=username,
+            password=password,
+            start_date=start_date,
+            expiry_date=expiry_date
+        ))
     rq.do_with_parameters()
 
 
@@ -96,7 +108,7 @@ class UserName:
         if ' ' in self.username: # a user name must not include a whitespace
             return 'Whitespace is not allowed in the user name.'
         for c in self.username: # a user name must not include special characters, except non-leading periods or underscores
-            if c in string.punctuation and c is not '.' and c is not '_':
+            if c in string.punctuation and c != '.' and c != '_':
                 return f'{c} is not allowed in the user name.'
         if self.username in ['signup', 'login', 'logout', 'reset', 'mark', 'back', 'unfamiliar', 'familiar', 'del']:
             return 'You used a restricted word as your user name.  Please come up with a better one.'
@@ -110,4 +122,3 @@ class WarningMessage:
 
     def __str__(self):
         return UserName(self.s).validate()
-

app/WordFreq.py

@@ -2,9 +2,12 @@
 # Copyright 2019 (C) Hui Lan <hui.lan@cantab.net>
 # Written permission must be obtained from the author for commercial uses.
 ###########################################################################
-
-from wordfreqCMD import remove_punctuation, freq, sort_in_descending_order
+"""
+This module produces word frequency
+"""
 import string
+from wordfreqCMD import remove_punctuation, freq, sort_in_descending_order
+
 
 class WordFreq:
     def __init__(self, s):
@@ -22,4 +25,3 @@ class WordFreq:
 if __name__ == '__main__':
     f = WordFreq('BANANA; Banana, apple ORANGE Banana banana.')
     print(f.get_freq())
-

app/account_service.py

@@ -1,41 +1,43 @@
+"""
+This module provides services about account.
+"""
 from flask import *
-from Login import check_username_availability, verify_user, add_user, get_expiry_date, change_password, WarningMessage
+from Login import check_username_availability, \
+    verify_user, add_user, get_expiry_date, change_password, WarningMessage
 
 
 # 初始化蓝图
 accountService = Blueprint("accountService", __name__)
 
-### Sign-up, login, logout ###
+
+# Sign-up, login, logout
 @accountService.route("/signup", methods=['GET', 'POST'])
 def signup():
     '''
     注册
     :return: 根据注册是否成功返回不同界面
     '''
-    if request.method == 'GET':
     # GET方法直接返回注册页面
+    if request.method == 'GET':
         return render_template('signup.html')
-    elif request.method == 'POST':
+    if request.method == 'POST':
         # POST方法需判断是否注册成功，再根据结果返回不同的内容
         username = escape(request.form['username'])
         password = escape(request.form['password'])
         password2 = escape(request.form['password2'])
-        
         #! 添加如下代码为了过滤注册时的非法字符
         warn = WarningMessage(username)
         if str(warn) != 'OK':
             return str(warn)
-        
         available = check_username_availability(username)
         if not available: # 用户名不可用
             flash('用户名 %s 已经被注册。' % (username))
             return render_template('signup.html')
-        elif len(password.strip()) < 4: # 密码过短
+        if len(password.strip()) < 4: # 密码过短
             return '密码过于简单。'
-        elif password != password2:
+        if password != password2:
             return '确认密码与输入密码不一致！'
-        else: # 添加账户信息
-            add_user(username, password)
+        add_user(username, password)# 添加账户信息
         verified = verify_user(username, password)
         if verified:
             # 写入session
@@ -46,11 +48,9 @@ def signup():
             session['articleID'] = None
             return '<p>恭喜，你已成功注册， 你的用户名是 <a href="%s">%s</a>。</p>\
             <p><a href="/%s">开始使用</a> <a href="/">返回首页</a><p/>' % (username, username, username)
-            else:
         return '用户名密码验证失败。'
 
 
-
 @accountService.route("/login", methods=['GET', 'POST'])
 def login():
     '''
@@ -62,11 +62,10 @@ def login():
         if not session.get('logged_in'):
             # 未登录，返回登录页面
             return render_template('login.html')
-        else:
         # 已登录，提示信息并显示登出按钮
         return '你已登录 <a href="/%s">%s</a>。 登出点击<a href="/logout">这里</a>。' % (
                 session['username'], session['username'])
-    elif request.method == 'POST':
+    if request.method == 'POST':
         # POST方法用于判断登录是否成功
         # check database and verify user
         username = escape(request.form['username'])
@@ -81,7 +80,6 @@ def login():
             session['expiry_date'] = user_expiry_date
             session['articleID'] = None
             return redirect(url_for('user_bp.userpage', username=username))
-        else:
         return '无法通过验证。'
 
 
@@ -111,17 +109,14 @@ def reset():
     if request.method == 'GET':
         # GET请求返回修改密码页面
         return render_template('reset.html', username=session['username'], state='wait')
-    else:
     # POST请求用于提交修改后信息
     old_password = escape(request.form['old-password'])
     new_password = escape(request.form['new-password'])
-
     re_new_password = escape(request.form['re-new-password'])  # 确认新密码
     if re_new_password != new_password: #验证新密码两次输入是否相同
         return '新密码不匹配，请重新输入'
     if len(new_password) < 4: #验证新密码长度，原则参照注册模块
         return '密码过于简单。(密码长度至少4位)'
-
     flag = change_password(username, old_password, new_password) # flag表示是否修改成功
     if flag:
         session['logged_in'] = False
@@ -134,8 +129,7 @@ window.location.href="/login";
 
 '''
 
-        else:
-            return \
+
 '''
 <script>
 alert('密码修改失败');

app/difficulty.py

@@ -3,8 +3,10 @@
 # Written permission must be obtained from the author for commercial uses.
 ###########################################################################
 
-# Purpose: compute difficulty level of a English text
-
+"""
+This module provides functions for calculating user words difficulty
+Purpose: compute difficulty level of a English text
+"""
 import pickle
 import math
 from wordfreqCMD import remove_punctuation, freq, sort_in_descending_order, sort_in_ascending_order
@@ -52,7 +54,6 @@ def get_difficulty_level(d1, d2):
     return d
 
 
-
 def revert_dict(d):
     '''
     In d, word is the key, and value is a list of dates.
@@ -62,7 +63,8 @@ def revert_dict(d):
     for k in d:
         if type(d[k]) is list:  # d[k] is a list of dates.
             lst = d[k]
-        elif type(d[k]) is int: # for backward compatibility.  d was sth like {'word':1}.  The value d[k] is not a list of dates, but a number representing how frequent this word had been added to the new word book. 
+        elif type(d[
+                      k]) is int:  # for backward compatibility.  d was sth like {'word':1}.  The value d[k] is not a list of dates, but a number representing how frequent this word had been added to the new word book.
             freq = d[k]
             lst = freq * ['2021082019']  # why choose this date?  No particular reasons.  I fix the bug in this date.
 
@@ -79,7 +81,8 @@ def user_difficulty_level(d_user, d):
     d_user2 = revert_dict(d_user)  # key is date, and value is a list of words added in that date
     count = 0
     geometric = 1
-    for date in sorted(d_user2.keys(), reverse=True): # most recently added words are more important while determining user's level
+    for date in sorted(d_user2.keys(),
+                       reverse=True):  # most recently added words are more important while determining user's level
         lst = d_user2[date]  # a list of words
         lst2 = []  # a list of tuples, (word, difficulty level)
         for word in lst:
@@ -125,17 +128,13 @@ def text_difficulty_level(s, d):
     return geometric ** (1 / max(count, 1))
 
 
-
 if __name__ == '__main__':
-
-
     d1 = load_record('frequency.p')
     # print(d1)
 
     d2 = load_record('words_and_tests.p')
     # print(d2)
 
-
     d3 = get_difficulty_level(d1, d2)
 
     s = '''
@@ -197,7 +196,6 @@ Amidst the aftermath of this shocking referendum vote, there is great uncertaint
 
 '''
 
-
     s = '''
 British Prime Minister Boris Johnson walks towards a voting station during the Brexit referendum in Britain, June 23, 2016. (Photo: EPA-EFE)
 
@@ -218,7 +216,6 @@ The prime minister was forced to ask for an extension to Britain's EU departure
 Johnson has repeatedly pledged to finalize the first stage, a transition deal, of Britain's EU divorce battle by Oct. 31. A second stage will involve negotiating its future relationship with the EU on trade, security and other salient issues.
 '''
 
-
     s = '''
 Thank you very much. We have a Cabinet meeting. We’ll have a few questions after grace. And, if you would, Ben, please do the honors.
 
@@ -233,17 +230,9 @@ We need — for our farmers, our manufacturers, for, frankly, unions and non-uni
 
 '''
 
-
-
-
     # f = open('bbc-fulltext/bbc/entertainment/001.txt')
-    f = open('wordlist.txt')
+    f = open('wordlist.txt',encoding="utf-8")
     s = f.read()
     f.close()
 
-
-
-    
     print(text_difficulty_level(s, d3))
-
-            

app/main.py

@@ -52,7 +52,6 @@ def appears_in_test(word, d):
     '''
     if not word in d:
         return ''
-    else:
     return ','.join(d[word])
 
 
@@ -71,7 +70,7 @@ def mark_word():
         d = pickle_idea.merge_frequency(lst, lst_history)
         pickle_idea.save_frequency_to_pickle(d, path_prefix + 'static/frequency/frequency.p')
         return redirect(url_for('mainpage'))
-    else: # 不回应GET请求
+    # 不回应GET请求
     return 'Under construction'
 
 
@@ -92,7 +91,7 @@ def mainpage():
         pickle_idea.save_frequency_to_pickle(d, path_prefix + 'static/frequency/frequency.p')
         return render_template('mainpage_post.html', lst=lst, yml=Yaml.yml)
 
-    elif request.method == 'GET':  # when we load a html page
+    if request.method == 'GET':  # when we load a html page
         random_ads = get_random_ads()
         number_of_essays = total_number_of_essays()
         d = load_freq_history(path_prefix + 'static/frequency/frequency.p')
@@ -102,7 +101,6 @@ def mainpage():
                                d_len=d_len, lst=lst, yml=Yaml.yml)
 
 
-
 if __name__ == '__main__':
     '''
     运行程序

app/pickle_idea.py

@@ -3,9 +3,10 @@
 # Written permission must be obtained from the author for commercial uses.
 ###########################################################################
 
-# Purpose: dictionary & pickle as a simple means of database.
-# Task: incorporate the functions into wordfreqCMD.py such that it will also show cumulative frequency.
-
+"""
+  Purpose: dictionary & pickle as a simple means of database.
+  Task: incorporate the functions into wordfreqCMD.py such that it will also show cumulative frequency.
+"""
 import pickle
 from datetime import datetime
 

app/pickle_idea2.py

@@ -43,7 +43,7 @@ def dict2lst(d):
             for k in d:
                 lst.append((k, [datetime.now().strftime('%Y%m%d%H%M')]))
             return lst
-        elif isinstance(d[keys[0]], list):
+        if isinstance(d[keys[0]], list):
             return list(d.items()) # a list of (key, value) pairs
 
     return []

app/static/js/fillword.js

@@ -11,34 +11,39 @@ function getWord() {
 
 function fillInWord() {
     let word = getWord();
-    if (isRead) read(word);
-    if (!isChoose) return;
+    if (isRead) {read(word);}
+    if (!isChoose) {return;}
     const element = document.getElementById("selected-words");
     element.value = element.value + " " + word;
 }
 
-document.getElementById("text-content").addEventListener("click", fillInWord, false);
+document
+    .getElementById("text-content")
+    .addEventListener("click", fillInWord, false);
 
 function makeUtterance(str, rate) {
     let msg = new SpeechSynthesisUtterance(str);
     msg.rate = rate;
     msg.lang = "en-US"; // TODO: add language options menu
-    msg.onboundary = ev => {
-        if (ev.name == "word") {
+    msg.onboundary = function(ev) {
+        if (ev.name === "word") {
             current_position = ev.charIndex;
         }
-    }
+    };
     return msg;
 }
 
 const sliderValue = document.getElementById("rangeValue"); // 显示值
 const inputSlider = document.getElementById("rangeComponent"); // 滑块元素
-inputSlider.oninput = () => {
+inputSlider.oninput = function(){
     let value = inputSlider.value; // 获取滑块的值
-    sliderValue.textContent = value + '×';
-    if (!reader.speaking) return;
+    sliderValue.textContent = value + "×";
+    if (!reader.speaking) {return;}
     reader.cancel();
-    let msg = makeUtterance(to_speak.substring(original_position + current_position), value);
+    let msg = makeUtterance(
+        to_speak.substring(original_position + current_position),
+        value
+    );
     original_position = original_position + current_position;
     current_position = 0;
     reader.speak(msg);

app/static/js/highlight.js

@@ -2,44 +2,60 @@ let isHighlight = true;
 
 function cancelBtnHandler() {
     cancelHighlighting();
-    document.getElementById("text-content").removeEventListener("click", fillInWord, false);
-    document.getElementById("text-content").removeEventListener("touchstart", fillInWord, false);
-    document.getElementById("text-content").addEventListener("click", fillInWord2, false);
-    document.getElementById("text-content").addEventListener("touchstart", fillInWord2, false);
+    document
+        .getElementById("text-content")
+        .removeEventListener("click", fillInWord, false);
+    document.getElementById("text-content")
+        .removeEventListener("touchstart", fillInWord, false);
+    document.getElementById("text-content")
+        .addEventListener("click", fillInWord2, false);
+    document.getElementById("text-content")
+        .addEventListener("touchstart", fillInWord2, false);
 }
 
 function showBtnHandler() {
-    document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
-    document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
-    document.getElementById("text-content").addEventListener("click", fillInWord, false);
-    document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
+    document.getElementById("text-content")
+        .removeEventListener("click", fillInWord2, false);
+    document.getElementById("text-content")
+        .removeEventListener("touchstart", fillInWord2, false);
+    document.getElementById("text-content")
+        .addEventListener("click", fillInWord, false);
+    document.getElementById("text-content")
+        .addEventListener("touchstart", fillInWord, false);
     highLight();
 }
 
 function getWord() {
-    return window.getSelection ? window.getSelection() : document.selection.createRange().text;
+    return (window.getSelection ?
+            window.getSelection() :
+            document.selection.createRange().text);
 }
 
 function highLight() {
-    if (!isHighlight) return;
+    if (!isHighlight) {return;}
     let articleContent = document.getElementById("article").innerText; //将原来的.innerText改为.innerHtml，使用innerText会把原文章中所包含的<br>标签去除，导致处理后的文章内容失去了原来的格式
     let pickedWords = document.getElementById("selected-words");  // words picked to the text area
     let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
     let allWords = "";  //初始化allWords的值，避免进入判断后编译器认为allWords未初始化的问题
-    if(dictionaryWords != null){//增加一个判断，检查生词本里面是否为空，如果为空，allWords只添加选中的单词
+    if(dictionaryWords !== null){//增加一个判断，检查生词本里面是否为空，如果为空，allWords只添加选中的单词
         allWords = pickedWords.value + " " + dictionaryWords.value;
     }
     else{
         allWords = pickedWords.value + " ";
     }
     const list = allWords.split(" ");//将所有的生词放入一个list中，用于后续处理
-    for (let i = 0; i < list.length; ++i) {
-        list[i] = list[i].replace(/(^\s*)|(\s*$)/g, ""); //消除单词两边的空字符
-        list[i] = list[i].replace('|', "");
-        list[i] = list[i].replace('?', "");
-        if (list[i] !== "" && "<mark>".indexOf(list[i]) === -1 && "</mark>".indexOf(list[i]) === -1) {
+    for (let i = 0; i < list.length; i+=1) {
+        list[i] = list[i].replace(/(^\s*)|(\s*$)/gm, ""); //消除单词两边的空字符
+        list[i] = list[i].replace("|", "");
+        list[i] = list[i].replace("?", "");
+        if (list[i] !== "" &&
+            "<mark>".indexOf(list[i]) === -1 &&
+            "</mark>".indexOf(list[i]) === -1
+           ) {
         //将文章中所有出现该单词word的地方改为：" <mark>" + word + "<mark> "。 正则表达式RegExp()中，"\\s"代表单词前后必须要有空格，以防止只对单词中的部分字符高亮的情况出现。
-            articleContent = articleContent.replace(new RegExp("\\s"+list[i]+"\\s", "g"), " <mark>" + list[i] + "</mark> ");
+            articleContent = articleContent.replace(
+                new RegExp("\\s"+list[i]+"\\s", "g"),
+                " <mark>" + list[i] + "</mark> ");
         }
     }
     document.getElementById("article").innerHTML = articleContent;
@@ -50,21 +66,27 @@ function cancelHighlighting() {
     let pickedWords = document.getElementById("selected-words");
     const dictionaryWords = document.getElementById("selected-words2");
     const list = pickedWords.value.split(" ");
-    if (pickedWords != null) {
-        for (let i = 0; i < list.length; ++i) {
-            list[i] = list[i].replace(/(^\s*)|(\s*$)/g, "");
+    if (pickedWords !== null) {
+        for (let i = 0; i < list.length; i+=1) {
+            list[i] = list[i].replace(/(^\s*)|(\s*$)/gm, "");
             if (list[i] !== "") { //原来判断的代码中，替换的内容为“list[i]”这个字符串，这明显是错误的，我们需要替换的是list[i]里的内容
-                articleContent = articleContent.replace(new RegExp("<mark>"+list[i]+"</mark>", "g"), list[i]);
+                articleContent = articleContent.replace(
+                    new RegExp("<mark>"+list[i]+"</mark>", "g"),
+                    list[i]
+                );
             }
         }
     }
-    if (dictionaryWords != null) {
+    if (dictionaryWords !== null) {
         let list2 = pickedWords.value.split(" ");
-        for (let i = 0; i < list2.length; ++i) {
+        for (let i = 0; i < list2.length; i+=1) {
             list2 = dictionaryWords.value.split(" ");
-            list2[i] = list2[i].replace(/(^\s*)|(\s*$)/g, "");
+            list2[i] = list2[i].replace(/(^\s*)|(\s*$)/gm, "");
             if (list2[i] !== "") { //原来代码中，替换的内容为“list[i]”这个字符串，这明显是错误的，我们需要替换的是list[i]里的内容
-                articleContent = articleContent.replace(new RegExp("<mark>"+list2[i]+"</mark>", "g"), list2[i]);
+                articleContent = articleContent.replace(
+                    new RegExp("<mark>"+list2[i]+"</mark>", "g"),
+                    list2[i]
+                );
             }
         }
     }

app/static/js/word_operation.js

@@ -3,17 +3,17 @@ function familiar(theWord) {
     let word = $("#word_" + theWord).text();
     let freq = $("#freq_" + theWord).text();
     $.ajax({
-        type:"GET",
-        url:"/" + username + "/" + word + "/familiar",
         success:function(response){
             let new_freq = freq - 1;
-            const allow_move = document.getElementById("move_dynamiclly").checked;
+            const allow_move = document
+                .getElementById("move_dynamiclly")
+                .checked;
             if (allow_move) {
 
                 if (new_freq <= 0) {
                     removeWord(theWord);
                 } else {
-                    renderWord({ word: theWord, freq: new_freq });
+                    renderWord({ freq: new_freq,word: theWord });
                 }
             } else {
                 if(new_freq <1) {
@@ -22,7 +22,9 @@ function familiar(theWord) {
                     $("#freq_" + theWord).text(new_freq);
                 }
             }
-        }
+        },
+        type:"GET",
+        url:"/" + username + "/" + word + "/familiar"
     });
 }
 
@@ -31,34 +33,38 @@ function unfamiliar(theWord) {
     let word = $("#word_" + theWord).text();
     let freq = $("#freq_" + theWord).text();
     $.ajax({
-        type:"GET",
-        url:"/" + username + "/" + word + "/unfamiliar",
         success:function(response){
             let new_freq = parseInt(freq) + 1;
-            const allow_move = document.getElementById("move_dynamiclly").checked;
+            const allow_move = document
+                .getElementById("move_dynamiclly")
+                .checked;
             if (allow_move) {
-                renderWord({ word: theWord, freq: new_freq });
+                renderWord({ freq: new_freq,word: theWord  });
             } else {
                 $("#freq_" + theWord).text(new_freq);
             }
-        }
+        },
+        type:"GET",
+        url:"/" + username + "/" + word + "/unfamiliar"
     });
 }
 
 function delete_word(theWord) {
     let username = $("#username").text();
-    let word = theWord.replace('&amp;', '&');
+    let word = theWord.replace("&amp;", "&");
     $.ajax({
-        type:"GET",
-        url:"/" + username + "/" + word + "/del",
         success:function(response){
-            const allow_move = document.getElementById("move_dynamiclly").checked;
+            const allow_move = document
+                .getElementById("move_dynamiclly")
+                .checked;
             if (allow_move) {
                 removeWord(theWord);
             } else {
                 $("#p_" + theWord).remove();
             }
-        }
+        },
+        type:"GET",
+        url:"/" + username + "/" + word + "/del"
     });
 }
 
@@ -75,11 +81,12 @@ function delete_word(theWord) {
 function parseWord(element) {
     const word = element
         .querySelector("a.btn.btn-light[role=button]")  // 获取当前词频元素的词汇元素
-        .innerText  // 获取词汇值;
-    const freq = Number.parseInt(element.querySelector(`#freq_${word}`).innerText);   // 获取词汇的数量
+        .innerText; // 获取词汇值;
+    const freq = Number// 获取词汇的数量
+        .parseInt(element.querySelector(`#freq_${word}`).innerText);
     return {
-        word,
-        freq
+        freq,
+        word
     };
 }
 
@@ -104,7 +111,7 @@ function wordTemplate(word) {
  */
 function removeWord(word) {
     // 根据词频信息删除元素
-    word = word.replace('&amp;', '&');
+    word = word.replace("&amp;", "&");
     const element_to_remove = document.getElementById(`p_${word}`);
     if (element_to_remove != null) {
         element_to_remove.remove();
@@ -134,7 +141,11 @@ function renderWord(word) {
     // 让发生变化的元素抖动
     new_element.classList.add("shaking");
     // 移动到该元素
-    new_element.scrollIntoView({behavior: "smooth", block: "center", inline: "nearest"});
+    new_element.scrollIntoView({
+        behavior: "smooth",
+        block: "center",
+        inline: "nearest"
+    });
     // 抖动完毕后删除抖动类
     setTimeout(() => {
         new_element.classList.remove("shaking");
@@ -145,7 +156,7 @@ function renderWord(word) {
  * 从string中创建一个HTML元素并返回
  */
 function elementFromString(string) {
-    const d = document.createElement('div');
+    const d = document.createElement("div");
     d.innerHTML = string;
     return d.children.item(0);
 }

app/user_service.py

@@ -1,5 +1,7 @@
+"""
+This module provides methods for user_services
+"""
 from datetime import datetime
-
 from flask import *
 
 # from app import Yaml
@@ -36,6 +38,7 @@ def user_reset(username):
     else:
         return 'Under construction'
 
+
 @userService.route("/<username>/back", methods=['GET'])
 def user_back(username):
     '''
@@ -48,7 +51,6 @@ def user_back(username):
         return redirect(url_for('user_bp.userpage', username=username))
 
 
-
 @userService.route("/<username>/<word>/unfamiliar", methods=['GET', 'POST'])
 def unfamiliar(username, word):
     '''
@@ -141,9 +143,6 @@ def userpage(username):
                                words=words)
 
 
-
-
-
 @userService.route("/<username>/mark", methods=['GET', 'POST'])
 def user_mark_word(username):
     '''

app/wordfreqCMD.py

@@ -2,13 +2,16 @@
 # Copyright 2019 (C) Hui Lan <hui.lan@cantab.net>
 # Written permission must be obtained from the author for commercial uses.
 ###########################################################################
-
+"""
+This Module produces word frequency
+"""
 import collections
 import string
 import operator
 import os, sys  # 引入模块sys，因为我要用里面的sys.argv列表中的信息来读取命令行参数。
 import pickle_idea
 
+
 def freq(fruit):
     '''
     功能： 把字符串转成列表。 目的是得到每个单词的频率。
@@ -18,7 +21,6 @@ def freq(fruit):
     '''
 
     result = []
-    
     fruit = fruit.lower()  # 字母转小写
     flst = fruit.split()  # 字符串转成list
     c = collections.Counter(flst)
@@ -85,10 +87,9 @@ def make_html_page(lst, fname):
     f.close()
 
 
-## main（程序入口）
+# main（程序入口）
 if __name__ == '__main__':
     num = len(sys.argv)
-
     if num == 1:  # 从键盘读入字符串
         s = input()
     elif num == 2:  # 从文件读入字符串
@@ -97,27 +98,19 @@ if __name__ == '__main__':
     else:
         print('I can accept at most 2 arguments.')
         sys.exit()  # 结束程序运行， 下面的代码不会被执行了。
-
     s = remove_punctuation(s)  # 这里是s是实参(argument)，里面有值
     L = freq(s)
     for x in sort_in_descending_order(L):
         print('%s\t%d\t%s' % (x[0], x[1], youdao_link(x[0])))  # 函数导出
-
     # 把频率的结果放result.html中
     make_html_page(sort_in_descending_order(L), 'result.html')
-
     print('\nHistory:\n')
     if os.path.exists('frequency.p'):
         d = pickle_idea.load_record('frequency.p')
     else:
         d = {}
-
     print(sort_in_descending_order(pickle_idea.dict2lst(d)))
-
     # 合并频率
     lst_history = pickle_idea.dict2lst(d)
     d = pickle_idea.merge_frequency(L, lst_history)
     pickle_idea.save_frequency_to_pickle(d, 'frequency.p')
-
-
-