blocks|key|4420347|text|我遇到了同样的问题，我设法“修复”是通过重新创建virtualenv并使用pip重新安装所需的包。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4420348|创建新的virtualenv：|4420349|virtualenv+<new-virtualenv>|code-block|syntax|javascript|4420350|激活它：|4420351|source+<new-virtualenv>/bin/activate|4420352|安装软件包：|4420353|pip+install+<required-packages>|4420354|我很高兴能再来一次！|4420355|只需重命名文件夹即可保留旧的virtualenv：|4420356|mv+<old-virtualenv>+<old-virtualenv>-backup|4420357|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|17|8|@]|9|@]|A|$G|H]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

I experienced the same issue and I managed to "fix" is by recreating the virtualenv and reinstalling the required packages using pip.

Create a new virtualenv:

<pre><code>virtualenv &lt;new-virtualenv&gt;
</code></pre>

Activate it:

<pre><code>source &lt;new-virtualenv&gt;/bin/activate
</code></pre>

Install the packages:

<pre><code>pip install &lt;required-packages&gt;
</code></pre>

And I was good to go again!

You can keep the old virtualenv by just renaming the folder:

<pre><code>mv &lt;old-virtualenv&gt; &lt;old-virtualenv&gt;-backup
</code></pre>

blocks|key|4420137|text|我修复了这个问题，安装了最低工作版本python3.4，这样我的virtualenv就可以很好地获得包列表，然后用python3.5创建一个新的。如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4420138|获取python3.4最小包：|4420139|wget+http://launchpadlibrarian.net/221250032/python3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
wget+http://launchpadlibrarian.net/221250033/libpython3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
sudo+dpkg+-i+--force-breaks+libpython3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
sudo+dpkg+-i+python3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb|code-block|syntax|javascript|4420140|我的virtualenv在这里：~/virtualenv/example|4420141|获取您的virtualenv中的包列表(它现在应该可以很好地完成这项工作，但可能无法正确执行其他操作)：|4420142|source+~/virtualenv/example/bin/activate
pip+freeze+>+/tmp/requirements.txt
deactivate+|4420143|摆脱python3.4，回到Ubuntu+16.04的首选状态：|4420144|sudo+dpkg+--purge+python3.4-minimal
sudo+dpkg+--force-depends+--purge+libpython3.4-minimal|4420145|使用正确的包创建一个新的virtualenv：|4420146|virtualenv+-p+python3.5+example
source+~/virtualenv/example/bin/activate
pip+install+-r+/tmp/requirements.txt|4420147|现在应该可以使用所有旧的包了，但是在python3.5中。应该..。|4420148|另请参阅Upgrade+python+in+a+virtualenv|offset|length|4420149|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/10218946/upgrade-python-in-a-virtualenv^0|0|0|0|0|0|0|0|0|0|0|0|4|U|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1C|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1D|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1E|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|1F|8|@]|9|@]|A|$G|H]]|$1|O|3|P|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|1H|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|1I|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|1J|8|@]|9|@]|A|$G|H]]|$1|W|3|X|5|6|7|1K|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1L|8|@]|9|@$10|1M|11|1N|1|1O]]|A|$]]|$1|12|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]]|13|$14|$5|15|16|17|A|$18|19]]]]

I fixed this by installing the minimum working python3.4 so that my virtualenv worked well enough to get the list of packages, then made a new one with python3.5... as follows:

Get python3.4 minimal packages:

<pre><code>wget http://launchpadlibrarian.net/221250032/python3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
wget http://launchpadlibrarian.net/221250033/libpython3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
sudo dpkg -i --force-breaks libpython3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
sudo dpkg -i python3.4-minimal_3.4.3-1ubuntu1~14.04.3_amd64.deb
</code></pre>

My virtualenv is here: ~/virtualenv/example

Get the list of packages in your virtualenv (which should now work well enough for this, but might not do other things properly):

<pre><code>source ~/virtualenv/example/bin/activate
pip freeze &gt; /tmp/requirements.txt
deactivate 
</code></pre>

Get rid of python3.4, to return to Ubuntu 16.04's preferred state:

<pre><code>sudo dpkg --purge python3.4-minimal
sudo dpkg --force-depends --purge libpython3.4-minimal
</code></pre>

Make a new virtualenv with the right packages:

<pre><code>virtualenv -p python3.5 example
source ~/virtualenv/example/bin/activate
pip install -r /tmp/requirements.txt
</code></pre>

That should now work, with all your old packages but in python3.5. Should...

See also <a href="https://stackoverflow.com/questions/10218946/upgrade-python-in-a-virtualenv">Upgrade python in a virtualenv</a>

blocks|key|4420168|text|我通过创建一个新的virtualenv并将python可执行文件复制到旧的损坏的virtualenv中修复了它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4420169|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I fixed it by creating a new virtualenv and copying the python executable into the old broken virtualenv.

I had python 3.4 in my virtualenv, but after upgrading ubuntu to 16.04 python upgraded to 3.5 so python in virtualenv crashes with these errors:

<pre><code>Could not find platform independent libraries &lt;prefix&gt;
Could not find platform dependent libraries &lt;exec_prefix&gt;
Consider setting $PYTHONHOME to &lt;prefix&gt;[:&lt;exec_prefix&gt;]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'

Current thread 0x00007f2f2dbcb700 (most recent call first):
fish: “python” terminated by signal SIGABRT (Abort)
</code></pre>

How can i fix it?

virtualenv python broke after upgrading ubuntu 15.10 to 16.04

Python

Ubuntu

我的virtualenv中有python 3.4，但是在将ubuntu升级到16.04之后，python升级到了3.5，所以virtualenv中的python崩溃了，错误如下：Could not find platform independent libraries <prefix>Could not find pl...

问virtualenv python在升级ubuntu 15.10至16.04后崩溃
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