Python 3.x 在python 3.4.2中读取文件时出现编解码器错误

我正在使用Python3.4.2，我看到了下面的错误，我已经包含了编码类型utf-8，但仍然看到了错误

File "C:\Python34(1)\lib\encodings\cp1252.py", line 23, in decode     
   return codecs.charmap_decode(input,self.errors,decoding_table)[0]
   UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 6389:
   character maps to <undefined>

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

我的文件中的行

916355

和

916356

如下所示

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

您尚未“包含编码类型utf-8”。如果包含，您的代码将如下所示：

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

with open(filename, encoding='utf8') as infile:  # Put the encoding here
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)

print(lc.encode('ascii', errors='backslashescape').decode('ascii'))

但这还不够。不幸的是，Windows终端不能使用完整的Unicode。它们通常可以一次处理一个代码页，但不能一次处理全部Unicode

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

如果这只是为了调试，您可以尝试以下操作：

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

with open(filename, encoding='utf8') as infile:  # Put the encoding here
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)

print(lc.encode('ascii', errors='backslashescape').decode('ascii'))

将Unicode字符转换为反斜杠转义序列（

\u1234

=U+1234），并将ASCII字符传递给未更改的用户

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1

---

如果您真的关心这个输出，那么您需要决定要使用什么编码以及如何输出它。写入UTF-8格式的文件可能更容易，然后使用支持Unicode的文本编辑器打开该文件（可以在“打开”对话框中告知记事本以UTF-8格式打开文件）。

请显示对实际读取进行编码的代码，因为错误清楚地表明仍使用系统代码页读取该文件（CP1252）.Hi-dhke谢谢您的快速响应，我猜上面已经添加了代码信息，但是您的代码中的第23行是带有函数

print（）

的吗？如果是这样：尝试打印（lc.encode（sys.stdout.encoding，'ignore'））并检查这是否有帮助。

with open(filename) as infile:
    lc = 0
    for line in infile:
        lc = lc +1
        print (lc)                                                                                                     

2015 Jun 30 05:06:09.073049 igmp [7214]: : Received General v2 Query from 40.150.3.1 (Eth3/1), mrt: 10 sec
2015 Jun 30 05:06:11.429282 igmp [7214]: : Send v2 Report for 224.0.1.39 on Eth3/1