为什么当我从今天的网页，而不是昨天刮也只出现此错误

问题描述：

即时通讯使用SQLite来存储某些股票我不是能够登录到网站的一系列价格的，所以我在本地保存的网页中的数的时间来跟踪不同的价格。为什么当我从今天的网页，而不是昨天刮也只出现此错误

我的代码现在工作了两个节省香港专业教育学院以前所作，但是当我尝试使用任何从今天起我碰到下面的错误

UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 415367:character maps to <undefined>

我的代码如下

from bs4 import BeautifulSoup 
from time import gmtime, strftime 
import sqlite3 
from sqlclean import * 
count = 0 
def create_tables(stock): 
sql_command = """CREATE TABLE """ + stock +"""(
       Stock_number INTEGER PRIMARY KEY, 
       BuyPrice REAL, 
       SellPrice REAL, 
       Time VARCHAR(30));""" 
cursor.execute(sql_command) 



def fill(): 
    y = 0 
    for i in stock: 
    string = sqstring(i) 
    stock[y] = string 
    y = y + 1 
    for i in stock: 
     create_tables(str(i)) 




def populate(): 
    x = 0 
    for i in stock: 
     cursor.execute(""" 
      INSERT INTO """+ i +""" 
      (SellPrice,BuyPrice) 
      VALUES 
      (""" + sell[x]+""","""+ buy[x] +""") 
      """) 
     x = x + 1 

def get_stocks(soup): 
    global count 
    rep1 = 0 
    rep2 = 0 
    if count == 0: 
     count = count + 1 
     for price in soup.find_all('span',{"class" : "tbox-list-button-sell"}): 
      sell.append(price.text) 
     for price in soup.find_all('span',{"class" : "tbox-list-button-buy"}): 
      buy.append(price.text) 
     for price in soup.find_all('div',{"class" : "window_title list-title"}): 
      a = price.text.strip() 
      stock.append(a) 
     fill() 
     populate() 
    else: 
     for price in soup.find_all('span',{"class" : "tbox-list-button-sell"}): 
      sell[rep1] = (price.text) 
      rep1 = rep1 + 1 
     for price in soup.find_all('span',{"class" : "tbox-list-button-buy"}): 
      buy[rep2] = (price.text) 
      rep2 = rep2 + 1 

     populate() 



connection = sqlite3.connect("stocks.db") 


cursor = connection.cursor() 

web = ["C:/Users/Luke_2/Desktop/Computing/Coursework/Practice/Stocks1/demo.trading212.com.html","C:/Users/Luke_2/Desktop/Computing/Coursework/live/Stocks1/demo.trading212.com1.html","C:/Users/Luke_2/Desktop/Computing/Coursework/live/Stocks1/demo.trading212.com10.24.html"] 
stock=[] 
sell = [] 
buy = [] 

def run(): 
    for i in web: 
     soup = BeautifulSoup(open(i),"html.parser") 
     get_stocks(soup) 
run() 

connection.commit() 

connection.close()

答

节省您没有告诉open（）函数在读取文件时使用哪种编解码器，例如如果您使用UTF-8在文件中：

在Python 2.7：

import io 
... 
def run(): 
    for i in web: 
     with io.open(i, encoding='utf-8') as infile: 
      soup = BeautifulSoup(infile,"html.parser")

对于Python3

def run(): 
    for i in web: 
     with open(i, encoding='utf-8') as infile: 
      soup = BeautifulSoup(infile,"html.parser")

为什么当我从今天的网页，而不是昨天刮也只出现此错误

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