[英]Python IOError: Errno 13 Permission denied
Ok, I'm totally baffled. 好吧,我完全困惑。 I've been working on this all night and I can't get it to work.
我整夜都在工作,但无法正常工作。 I have premission to look into the file, all I want to do is read the darn thing.
我很乐意查看文件,我要做的就是读取该死的东西。 Every time I try I get:
每次尝试,我都会得到:
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
scan('test', rules, 0)
File "C:\Python32\PythonStuff\csc242hw7\csc242hw7.py", line 45, in scan
files = open(n, 'r')
IOError: [Errno 13] Permission denied: 'test\\test'
Here is my code. 这是我的代码。 It's unfinished but I feel I should at least be getting correct values for the sections I am testing.
它尚未完成,但我认为我至少应该为要测试的部分获取正确的值。 Basically I want to look into a folder, and if there is a file scan it looking for whatever I set my
signatures
to. 基本上,我想查看一个文件夹,如果有文件扫描,它将查找我设置
signatures
的内容。 If there are folders I will or will not scan them depending on the depth
specified. 如果有文件夹,我会或不会扫描它们,具体取决于指定的
depth
。 If there is a depth < 0
then it will return. 如果
depth < 0
,它将返回。 If depth == 0
then it will just scan the elements in the first folder. 如果
depth == 0
那么它将仅扫描第一个文件夹中的元素。 If depth > 0
it will scan folders up until the specified depth. 如果
depth > 0
,它将扫描文件夹直到指定深度。 None of that matters thought, because for whatever reason I don't have permission to read the file. 这些都没关系,因为无论出于何种原因,我都没有读取文件的权限。 I have no idea what I am doing wrong.
我不知道我在做什么错。
def scan(pathname, signatures, depth):
'''Recusively scans all the files contained in the folder pathname up
until the specificed depth'''
# Reconstruct this!
if depth < 0:
return
elif depth == 0:
for item in os.listdir(pathname):
n = os.path.join(pathname, item)
try:
# List a directory on n
scan(n, signatures, depth)
except:
# Do what you should for a file
files = open(n, 'r')
text = file.read()
for virus in signatures:
if text.find(signatures[virus]) > 0:
print('{}, found virus {}'.format(n, virus))
files.close()
Just a quick edit: 只需快速编辑:
This code below does something very similar, but I can't control the depth. 下面的代码做了非常相似的事情,但是我无法控制深度。 It however, works fine.
但是,它工作正常。
def oldscan(pathname, signatures):
'''recursively scans all files contained, directly or
indirectly, in the folder pathname'''
for item in os.listdir(pathname):
n = os.path.join(pathname, item)
try:
oldscan(n, signatures)
except:
f = open(n, 'r')
s = f.read()
for virus in signatures:
if s.find(signatures[virus]) > 0:
print('{}, found virus {}'.format(n,virus))
f.close()
I venture to guess that test\\test
is a directory, and some exception occurred. 我敢猜测
test\\test
是一个目录,并且发生了一些异常。 You catch the exception blindly and try to open the directory as a file. 您盲目地捕获了异常,然后尝试将目录作为文件打开。 That gives Errno 13 on Windows.
这样就可以在Windows上使用Errno 13。
Use os.path.isdir
to distinguish between files and directories, instead of the try...except. 使用
os.path.isdir
区分文件和目录,而不是try ... except。
for item in os.listdir(pathname):
n = os.path.join(pathname, item)
if os.path.isdir(n):
# List a directory on n
scan(n, signatures, depth)
else:
# Do what you should for a file
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