English 中文(简体)
如何检查一条道路是现有的普通档案,而不是名录?
原标题:How to check that a path is an existing regular file and not a directory?
  • 时间:2010-08-24 18:13:34
  •  标签:
  • python
  • file

1份文字用于各小组交换资料。 用于:

份额。 页: 1file.txt

检查理由确保<代码>/path/to/file.txt已经存在,并有正确的许可:

#[...]
# ensure that file exists and is readable
if not os.access(options.path, os.F_OK):
 raise MyError( the file does not exist )
# ensure that path is absolute
if not os.path.isabs(options.path):
 raise MyError( I need absolute path )
# ensure that file has read permissions for others
info = os.stat(options.path)
last_bit = oct(info.st_mode)[-1]
if not last_bit in [ 4 ,  5 ,  6 ,  7 ]:
 raise MyError( others cannot read the file: change permission )

问题是,派出一个用户:

份额。 页: 1

该方案没有失败。 在回顾中,我本应看到这一点,但我没有。

我如何补充一项检验,以确保这条道路是一份定期文件,该档案可能或不可能延期(我不能简单地处理“<>/strong”的名称)?

最佳回答
import os.path
os.path.isfile(filename)
问题回答
os.path.exists(path) and not os.path.isdir(path)




相关问题
Can Django models use MySQL functions?

Is there a way to force Django models to pass a field to a MySQL function every time the model data is read or loaded? To clarify what I mean in SQL, I want the Django model to produce something like ...

An enterprise scheduler for python (like quartz)

I am looking for an enterprise tasks scheduler for python, like quartz is for Java. Requirements: Persistent: if the process restarts or the machine restarts, then all the jobs must stay there and ...

How to remove unique, then duplicate dictionaries in a list?

Given the following list that contains some duplicate and some unique dictionaries, what is the best method to remove unique dictionaries first, then reduce the duplicate dictionaries to single ...

What is suggested seed value to use with random.seed()?

Simple enough question: I m using python random module to generate random integers. I want to know what is the suggested value to use with the random.seed() function? Currently I am letting this ...

How can I make the PyDev editor selectively ignore errors?

I m using PyDev under Eclipse to write some Jython code. I ve got numerous instances where I need to do something like this: import com.work.project.component.client.Interface.ISubInterface as ...

How do I profile `paster serve` s startup time?

Python s paster serve app.ini is taking longer than I would like to be ready for the first request. I know how to profile requests with middleware, but how do I profile the initialization time? I ...

Pragmatically adding give-aways/freebies to an online store

Our business currently has an online store and recently we ve been offering free specials to our customers. Right now, we simply display the special and give the buyer a notice stating we will add the ...

Converting Dictionary to List? [duplicate]

I m trying to convert a Python dictionary into a Python list, in order to perform some calculations. #My dictionary dict = {} dict[ Capital ]="London" dict[ Food ]="Fish&Chips" dict[ 2012 ]="...