blocks|key|1770507|text|>>>+import+os
>>>+os.path.abspath("mydir/myfile.txt")
'C:/example/cwd/mydir/myfile.txt'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1770508|如果它已经是绝对路径，也同样有效：|unstyled|1770509|>>>+import+os
>>>+os.path.abspath("C:/example/cwd/mydir/myfile.txt")
'C:/example/cwd/mydir/myfile.txt'|1770510|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>&gt;&gt;&gt; import os
&gt;&gt;&gt; os.path.abspath("mydir/myfile.txt")
'C:/example/cwd/mydir/myfile.txt'
</code></pre>

Also works if it is already an absolute path:

<pre><code>&gt;&gt;&gt; import os
&gt;&gt;&gt; os.path.abspath("C:/example/cwd/mydir/myfile.txt")
'C:/example/cwd/mydir/myfile.txt'
</code></pre>

blocks|key|1770640|text|您可以使用新的Python3.4库pathlib。(对于Python2.6或2.7，您也可以使用pip+install+pathlib获取它。)作者wrote：“这个库的目标是提供一个简单的类层次结构来处理文件系统路径和用户对它们执行的常见操作。”|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1770641|要在Windows中获取绝对路径，请执行以下操作：|1770642|>>>+from+pathlib+import+Path
>>>+p+=+Path("pythonw.exe").resolve()
>>>+p
WindowsPath('C:/Python27/pythonw.exe')
>>>+str(p)
'C:\\Python27\\pythonw.exe'|code-block|syntax|javascript|1770643|或在UNIX上：|1770644|>>>+from+pathlib+import+Path
>>>+p+=+Path("python3.4").resolve()
>>>+p
PosixPath('/opt/python3/bin/python3.4')
>>>+str(p)
'/opt/python3/bin/python3.4'|1770645|文档在这里：https://docs.python.org/3/library/pathlib.html|1770646|entityMap|0|LINK|mutability|MUTABLE|url|http://www.python.org/dev/peps/pep-0428/#abstract|1|https://docs.python.org/3/library/pathlib.html^0|H|7|1C|J|22|5|0|0|0|0|0|0|6|1A|1|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]|$9|15|A|16|B|C]]|D|@$9|17|A|18|1|19]]|E|$]]|$1|F|3|G|5|6|7|1A|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1B|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1C|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1E|8|@]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|S|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|V|W|X|E|$Y|11]]]]

You could use the new Python 3.4 library <code>pathlib</code>. (You can also get it for Python 2.6 or 2.7 using <code>pip install pathlib</code>.) The authors <a href="http://www.python.org/dev/peps/pep-0428/#abstract">wrote</a>: "The aim of this library is to provide a simple hierarchy of classes to handle filesystem paths and the common operations users do over them."

To get an absolute path in Windows:

<pre><code>&gt;&gt;&gt; from pathlib import Path
&gt;&gt;&gt; p = Path("pythonw.exe").resolve()
&gt;&gt;&gt; p
WindowsPath('C:/Python27/pythonw.exe')
&gt;&gt;&gt; str(p)
'C:\\Python27\\pythonw.exe'
</code></pre>

Or on UNIX:

<pre><code>&gt;&gt;&gt; from pathlib import Path
&gt;&gt;&gt; p = Path("python3.4").resolve()
&gt;&gt;&gt; p
PosixPath('/opt/python3/bin/python3.4')
&gt;&gt;&gt; str(p)
'/opt/python3/bin/python3.4'
</code></pre>

Docs are here: <a href="https://docs.python.org/3/library/pathlib.html">https://docs.python.org/3/library/pathlib.html</a>

blocks|key|1555472|text|安装第三方path+module+(可以在PyPI上找到)，它将所有os.path函数和其他相关函数封装到一个对象上的方法中，该对象可以在使用字符串的任何地方使用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1555473|>>>+from+path+import+path
>>>+path('mydir/myfile.txt').abspath()
'C:\\example\\cwd\\mydir\\myfile.txt'|code-block|syntax|javascript|1555474|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/jaraco/path|1|https://pypi.org/project/path/^0|L|4|Y|7|5|B|0|L|4|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

Install a third-party <a href="https://github.com/jaraco/path" rel="noreferrer">path module</a> (found on <a href="https://pypi.org/project/path/" rel="noreferrer"><code>PyPI</code></a>), it wraps all the <code>os.path</code> functions and other related functions into methods on an object that can be used wherever strings are used:
<pre><code>&gt;&gt;&gt; from path import path
&gt;&gt;&gt; path('mydir/myfile.txt').abspath()
'C:\\example\\cwd\\mydir\\myfile.txt'
</code></pre>

blocks|key|1555797|text|import+os
os.path.abspath(os.path.expanduser(os.path.expandvars(PathNameString)))|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1555798|请注意，如果给定的文件(或目录)名称和位置表达式可能包含前导~/(代字号是指用户的主目录)，而expandvars负责处理任何其他环境变量(如$HOME)，则(在Unix上)+expanduser是必需的。|unstyled|offset|length|style|CODE|1555799|entityMap^0|0|U|2|1B|A|1Z|5|2G|A|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@$G|O|H|P|I|J]|$G|Q|H|R|I|J]|$G|S|H|T|I|J]|$G|U|H|V|I|J]]|9|@]|A|$]]|$1|K|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>import os
os.path.abspath(os.path.expanduser(os.path.expandvars(PathNameString)))
</code></pre>

Note that <code>expanduser</code> is necessary (on Unix) in case the given expression for the file (or directory) name and location may contain a leading <code>~/</code>(the tilde refers to the user's home directory), and <code>expandvars</code> takes care of any other environment variables (like <code>$HOME</code>).

blocks|key|1555742|text|Python+3.4%2B+pathlib的更新实际上回答了这个问题：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1555743|from+pathlib+import+Path

relative+=+Path("mydir/myfile.txt")
absolute+=+relative.absolute()++#+absolute+is+a+Path+object|code-block|syntax|javascript|1555744|如果您只需要一个临时字符串，请记住，您可以将Path对象与os.path中的所有相关函数一起使用，当然包括abspath|1555745|from+os.path+import+abspath

absolute+=+abspath(relative)++#+absolute+is+a+str+object|1555746|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/3/library/pathlib.html|1|https://docs.python.org/3/library/os.path.html|2|https://docs.python.org/3/library/os.path.html#os.path.abspath^0|C|7|C|7|0|0|0|M|4|T|7|1H|7|T|7|1|1H|7|2|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|17|8|@$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@$9|1E|A|1F|1|1G]|$9|1H|A|1I|1|1J]]|E|$]]|$1|M|3|N|5|H|7|1K|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]|Y|$5|R|S|T|E|$U|Z]]]]

Update for Python 3.4+ <a href="https://docs.python.org/3/library/pathlib.html" rel="noreferrer"><code>pathlib</code></a> that actually answers the question:

<pre><code>from pathlib import Path

relative = Path("mydir/myfile.txt")
absolute = relative.absolute() # absolute is a Path object
</code></pre>

If you only need a temporary string, keep in mind that you can use <code>Path</code> objects with all the relevant functions in <a href="https://docs.python.org/3/library/os.path.html" rel="noreferrer"><code>os.path</code></a>, including of course <a href="https://docs.python.org/3/library/os.path.html#os.path.abspath" rel="noreferrer"><code>abspath</code></a>:

<pre><code>from os.path import abspath

absolute = abspath(relative) # absolute is a str object
</code></pre>

blocks|key|1555511|text|现在，您还可以使用基于path.py的unipath包：http://sluggo.scrapping.cc/python/unipath/|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1555512|>>>+from+unipath+import+Path
>>>+absolute_path+=+Path('mydir/myfile.txt').absolute()
Path('C:\\example\\cwd\\mydir\\myfile.txt')
>>>+str(absolute_path)
C:\\example\\cwd\\mydir\\myfile.txt
>>>|code-block|syntax|javascript|1555513|我推荐使用这个包，因为它提供了a+clean+interface+to+common+os.path+utilities。|1555514|entityMap|0|LINK|mutability|MUTABLE|url|http://sluggo.scrapping.cc/python/unipath/|1|http://sluggo.scrapping.cc/python/unipath/Unipath-current/README.html^0|B|7|J|7|S|16|0|0|0|F|19|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|15|8|@]|D|@$9|16|A|17|1|18]]|E|$]]|$1|M|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]]]

Today you can also use the <code>unipath</code> package which was based on <code>path.py</code>: <a href="http://sluggo.scrapping.cc/python/unipath/" rel="noreferrer">http://sluggo.scrapping.cc/python/unipath/</a>

<pre><code>&gt;&gt;&gt; from unipath import Path
&gt;&gt;&gt; absolute_path = Path('mydir/myfile.txt').absolute()
Path('C:\\example\\cwd\\mydir\\myfile.txt')
&gt;&gt;&gt; str(absolute_path)
C:\\example\\cwd\\mydir\\myfile.txt
&gt;&gt;&gt;
</code></pre>

I would recommend using this package as it offers <a href="http://sluggo.scrapping.cc/python/unipath/Unipath-current/README.html" rel="noreferrer">a clean interface to common os.path utilities</a>.

blocks|key|1770906|text|您可以使用它来获取特定文件的绝对路径。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1770907|from+pathlib+import+Path

fpath+=+Path('myfile.txt').absolute()

print(fpath)|code-block|syntax|javascript|1770908|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use this to get absolute path of a specific file.
<pre><code>from pathlib import Path

fpath = Path('myfile.txt').absolute()

print(fpath)
</code></pre>

blocks|key|1555638|text|如果您使用的是mac|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1555639|import+os
upload_folder+=+os.path.abspath("static/img/users")|code-block|syntax|javascript|1555640|这将为您提供完整的路径：|1555641|print(upload_folder)|1555642|将显示以下路径：|1555643|>>>/Users/myUsername/PycharmProjects/OBS/static/img/user|1555644|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

if you are on a mac 

<pre><code>import os
upload_folder = os.path.abspath("static/img/users")
</code></pre>

this will give you a full path:

<pre><code>print(upload_folder)
</code></pre>

will show the following path:

<pre><code>&gt;&gt;&gt;/Users/myUsername/PycharmProjects/OBS/static/img/user
</code></pre>

blocks|key|1555694|text|如果有人正在使用python和linux并查找文件的完整路径：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1555695|>>>+path=os.popen("readlink+-f+file").read()
>>>+print+path
abs/path/to/file|code-block|syntax|javascript|1555696|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In case someone is using python and linux and looking for full path to file:

<pre><code>&gt;&gt;&gt; path=os.popen("readlink -f file").read()
&gt;&gt;&gt; print path
abs/path/to/file
</code></pre>

Given a path such as <code>"mydir/myfile.txt"</code>, how do I find the file's absolute path relative to the current working directory in Python? E.g. on Windows, I might end up with:

<pre><code>"C:/example/cwd/mydir/myfile.txt"
</code></pre>

How to get an absolute file path in Python

文件系统

Windows

Python

Unix

给定一个像"mydir/myfile.txt"这样的路径，我如何在Python中找到文件相对于当前工作目录的绝对路径？例如，在Windows上，我可能会得到以下结果："C:/example/cwd/mydir/myfile.txt"

问如何在Python中获取绝对文件路径
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