问题：为什么在文件路径中出现Unicode转义的SyntaxError？
我要访问的文件夹称为python，位于我的桌面上。
尝试获取以下错误
>>> os.chdir('C:\Users\expoperialed\Desktop\Python')
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape
The folder I want to get to is called python and is on my desktop.
I get the following error when I try to get to it
>>> os.chdir('C:\Users\expoperialed\Desktop\Python')
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape
回答 0
您需要使用原始字符串，将斜杠加倍或使用正斜杠：
r'C:\Users\expoperialed\Desktop\Python'
'C:\\Users\\expoperialed\\Desktop\\Python'
'C:/Users/expoperialed/Desktop/Python'
在常规python字符串中，\U字符组合表示扩展的Unicode代码点转义。
对于任何已识别的转义序列，例如\a或t或\x，您可以遇到许多其他问题。
You need to use a raw string, double your slashes or use forward slashes instead:
r'C:\Users\expoperialed\Desktop\Python'
'C:\\Users\\expoperialed\\Desktop\\Python'
'C:/Users/expoperialed/Desktop/Python'
In regular python strings, the \U character combination signals a extended Unicode codepoint escape.
You can hit any number of other issues, for any of the recognised escape sequences, such as \a or \t or \x, etc.
回答 1
C:\\Users\\expoperialed\\Desktop\\Python
这种语法对我有用。
C:\\Users\\expoperialed\\Desktop\\Python
This syntax worked for me.
回答 2
这通常发生在Python 3中。常见的原因之一是在指定文件路径时，您需要使用“ \\”而不是“ \”。如：
filePath = "C:\\User\\Desktop\\myFile"
对于Python 2，只需使用“ \”即可。
This usually happens in Python 3. One of the common reasons would be that while specifying your file path you need “\\” instead of “\”. As in:
filePath = "C:\\User\\Desktop\\myFile"
For Python 2, just using “\” would work.
回答 3
f = open('C:\\Users\\Pooja\\Desktop\\trolldata.csv')
对于Python 3及更高版本的Python程序，请使用“ \\”。错误将得到解决。
f = open('C:\\Users\\Pooja\\Desktop\\trolldata.csv')
Use ‘\\’ for python program in Python version 3 and above..
Error will be resolved..
回答 4
所有这三种语法都能很好地工作。
另一种方法是先写
path = r’C：\ user \ ……….’（无论您使用什么路径）
然后将其传递给os.chdir（path）
All the three syntax work very well.
Another way is to first write
path = r’C:\user\……………….’ (whatever is the path for you)
and then passing it to os.chdir(path)
回答 5
用这个
os.chdir('C:/Users\expoperialed\Desktop\Python')
Use this
os.chdir('C:/Users\expoperialed\Desktop\Python')
回答 6
我有同样的错误。基本上，我怀疑路径在“ C：\”之后不能以“ U”或“ User”开头。通过将要从python访问的文件放在“ c：\”路径下，将目录更改为“ c：\ file_name.png”。
在您的情况下，如果必须访问“ python”文件夹，则可能重新安装python，然后将安装路径更改为“ c：\ python”。否则，只需避免路径中出现“ … \ User …”，然后将项目放在C：下。
I had the same error.
Basically, I suspect that the path cannot start either with “U” or “User” after “C:\”.
I changed my directory to “c:\file_name.png” by putting the file that I want to access from python right under the ‘c:\’ path.
In your case, if you have to access the “python” folder, perhaps reinstall the python, and change the installation path to something like “c:\python”. Otherwise, just avoid the “…\User…” in your path, and put your project under C:.
