Got a same error and this solved my error. Thanks! python 2 and python 3 differing in unicode handling is making pickled files quite incompatible to load. So Use python pickle's encoding argument. Link below helped me solve the similar problem when I was trying to open pickled data from my python 3.7, while my file was saved originally in python 2.x version. https://blog.modest-destiny.com/posts/python-2-and-3-compatible-pickle-save-and-load/ I copy the load_pickle function in my script and called the load_pickle(pickle_file) while loading my input_data like this:

input_data = load_pickle("my_dataset.pkl")

load_pickle函数在这里:

def load_pickle(pickle_file):
    try:
        with open(pickle_file, 'rb') as f:
            pickle_data = pickle.load(f)
    except UnicodeDecodeError as e:
        with open(pickle_file, 'rb') as f:
            pickle_data = pickle.load(f, encoding='latin1')
    except Exception as e:
        print('Unable to load data ', pickle_file, ':', e)
        raise
    return pickle_data

这是典型的“统一码问题”。我相信，解释这个问题已经超出了StackOverflow回答的范围，无法完全解释正在发生的事情。

这里有很好的解释。

简单地说，您已经将一个被解释为字节字符串的内容传递给了需要将其解码为Unicode字符的内容，但是默认的编解码器(ascii)失败了。

我给你们看的演示提供了避免这种情况的建议。让你的代码成为“unicode三明治”。在Python 2中，使用from __future__ import unicode_literals会有所帮助。

更新:如何修复代码:

OK - in your variable "source" you have some bytes. It is not clear from your question how they got in there - maybe you read them from a web form? In any case, they are not encoded with ascii, but python is trying to convert them to unicode assuming that they are. You need to explicitly tell it what the encoding is. This means that you need to know what the encoding is! That is not always easy, and it depends entirely on where this string came from. You could experiment with some common encodings - for example UTF-8. You tell unicode() the encoding as a second parameter:

source = unicode(source, 'utf-8')

最后我明白了:

as3:/usr/local/lib/python2.7/site-packages# cat sitecustomize.py
# encoding=utf8  
import sys  

reload(sys)  
sys.setdefaultencoding('utf8')

让我查一下:

as3:~/ngokevin-site# python
Python 2.7.6 (default, Dec  6 2013, 14:49:02)
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> reload(sys)
<module 'sys' (built-in)>
>>> sys.getdefaultencoding()
'utf8'
>>>

上面显示了python的默认编码是utf8。那么错误就不再存在了。

我在Python2.7中遇到了这个错误。我在尝试运行许多python程序时遇到了这种情况，但我设法用这个简单的脚本重现了它:

#!/usr/bin/env python

import subprocess
import sys

result = subprocess.Popen([u'svn', u'info'])
if not callable(getattr(result, "__enter__", None)) and not callable(getattr(result, "__exit__", None)):
    print("foo")
print("bar")

在成功的情况下，它应该打印出'foo'和'bar'，如果你不在svn文件夹中，可能会有一个错误消息。

在失败时，它应该打印'UnicodeDecodeError: 'ascii' codec不能解码字节0xc4在位置39:序号不在范围(128)'。

在尝试重新生成区域设置和这个问题中发布的许多其他解决方案后，我了解到发生了错误，因为我的PATH环境变量中编码了一个特殊字符(ĺ)。在` ~/中固定PATH后。Bashrc '，然后退出我的会话并再次进入，(显然是在查找'~/。Bashrc’没有起作用)，问题就消失了。

我有同样的错误，url包含非ascii字符(值> 128的字节)，我的解决方案:

url = url.decode('utf8').encode('utf-8')

注意:utf-8, utf8只是别名。只使用'utf8'或'utf-8'应该以同样的方式工作

在我的情况下，为我工作，在Python 2.7中，我认为这个赋值改变了str内部表示中的“某些东西”——即。，它强制正确解码url中支持的字节序列，并最终将字符串放入utf-8 STR中，所有的魔法都在正确的地方。 Python中的Unicode对我来说是一种黑魔法。 希望有用

"UnicodeDecodeError: 'ascii' codec can't decode byte"

错误原因:input_string必须是unicode，但给出了str

"TypeError: Decoding Unicode is not supported"

此错误的原因:试图将unicode input_string转换为unicode

因此，首先检查你的input_string是否为str，并在必要时转换为unicode:

if isinstance(input_string, str):
   input_string = unicode(input_string, 'utf-8')

其次，上面只是改变了类型，但没有删除非ascii字符。如果你想删除非ascii字符:

if isinstance(input_string, str):
   input_string = input_string.decode('ascii', 'ignore').encode('ascii') #note: this removes the character and encodes back to string.

elif isinstance(input_string, unicode):
   input_string = input_string.encode('ascii', 'ignore')