wujiale 发表于 2020-12-15 18:06:02

编解码器无法解码位置2中的字节0xbf:起始字节无效

这是程序崩溃出现的字:

Traceback (most recent call last):
File "C:/Users/84702/Desktop/OSSS.py", line 61, in <module>
    search_files(key,detail)
File "C:/Users/84702/Desktop/OSSS.py", line 50, in search_files
    key_dict = search_in_file(each_txt_file,key)
File "C:/Users/84702/Desktop/OSSS.py", line 28, in search_in_file
    for each_line in f:
File "D:\python\lib\codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xbf in position 2: invalid start byte


这是原程序,小甲鱼第30讲最后一题:

import os


def print_pos(key_dict):
    keys = key_dict.keys()
    keys = sorted(keys) #由于字典是无序的,我们这里对行数进行排序
    for each_key in keys:
      print("关键字出现在第 %s 行,第 %s 个位置。" % (each_key,str(key_dict)))
   

def pos_in_line(line,key):
    pos = []
    begin = line.find(key)
    while begin != -1 :
      pos.append(begin + 1) #用户的角度是从1开始数
      begin = line.find(key,begin+1) # 从下一个位置继续查找


    return pos


def search_in_file(file_name,key):
    f = open(file_name,encoding="utf-8")
    count = 0 #记录行数
    key_dict = dict()# 字典,用户存放key所在具体行数对应具体位置


    for each_line in f:
      count += 1
      if key in each_line:
            pos = pos_in_line(each_line,key) # key在每行对应的位置
            key_dict = pos

    f.close()
    return key_dict


def search_files(key,detail):
    all_files = os.walk(os.getcwd())
    txt_files = []


    for i in all_files:
      for each_file in i:
            if os.path.splitext(each_file) == ".txt": # 根据后缀判断是否文本文件
                each_file = os.path.join(i,each_file)
                txt_files.append(each_file)

    for each_txt_file in txt_files:
      key_dict = search_in_file(each_txt_file,key)
      if key_dict:
            print("=======================================================")
            print("在文件【%s】中找到关键字【%s】"% (each_txt_file,key))
            if detail in ["YES","Yes","yes"]:
                print_pos(key_dict)



key = input("请将该脚本防御待查找的文件夹内,请输入关键字:")
detail = input("请问是否需要打印关键字【%s】在文件中的具体位置(YES/NO):" % key)
search_files(key,detail)

hrp 发表于 2020-12-15 18:38:06

不能所有的文件都用utf-8编码去打开呀,毕竟不是所有的文件都是用utf8保存的,你可以了解一下chardet模块,猜测文件编码用的
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