I&#39;m trying to install couchapp, which uses easy_install - and is quite explicit in stating a particular version of easy_install/setuptools is needed: 0.6c6. I seem to have easy_install already on my Mac, but there&#39;s no command-line arguments to check the version. Instead of just installing a new version over the top, I&#39;d like to see whether it&#39;s necessary first.

So: Any pointers on how I can see what version of setuptools/easy_install I have installed on my machine?

I&#39;m not a Python developer, so I&#39;m assuming this is a simple question. However, I&#39;ve not found anything via Google or here on SOF.

Determining version of easy_install/setuptools

I use this command in the shell to install PIL:

    easy_install PIL

then I run `python` and type this: `import PIL`. But I get this error:

    Traceback (most recent call last):
      File &quot;&lt;console&gt;&quot;, line 1, in &lt;module&gt;
    ImportError: No module named PIL

I&#39;ve never had such problem, what do you think?

ImportError: No module named PIL

I know that I can install Jython with Java and that I can use Jython where I use Python. The Jython shell is working fine.

In Jython, how can I install libraries like `lxml`, `Scrappy` and `BeautifulSoup` that I&#39;d normally install via `pip` or `easy_install`

How can I install various Python libraries in Jython?

I&#39;m a bit miffed by the python package installation process. Specifically, what&#39;s the difference between packages installed in the dist-packages directory and the site-packages directory?

What&#39;s the difference between dist-packages and site-packages?

What&#39;s the best way to download a python package and it&#39;s dependencies from pypi for offline installation on another machine? Is there any easy way to do this with pip or easy_install? I&#39;m trying to install the requests library on a FreeBSD box that is not connected to the internet. 


How to install packages offline?

A [tweet][1] reads: 

&gt; Don&#39;t use easy_install, unless you
&gt; like stabbing yourself in the face.
&gt; Use pip.

Why use pip over easy_install? Doesn&#39;t the [fault lie with PyPI and package authors mostly][2]? If an author uploads crap source tarball (eg: missing files, no setup.py) to PyPI, then both pip and easy_install will fail. Other than cosmetic differences, why do Python people (like in the above tweet) seem to **strongly** favor pip over easy_install?

(Let&#39;s assume that we&#39;re talking about easy_install from the Distribute package, that is maintained by the community)

  [1]: http://twitter.com/jperras/statuses/18160589493
  [2]: http://mail.python.org/pipermail/catalog-sig/2010-June/002985.html

Why use pip over easy_install?

Python&#39;s &lt;code&gt;easy_install&lt;/code&gt; makes installing new packages extremely convenient. However, as far as I can tell, it doesn&#39;t implement the other common features of a dependency manager - listing and removing installed packages.

What is the best way of finding out what&#39;s installed, and what is the preferred way of removing installed packages? Are there any files that need to be updated if I remove packages manually (e.g. by `rm /usr/local/lib/python2.6/dist-packages/my_installed_pkg.egg` or similar)?


How do I remove packages installed with Python&#39;s easy_install?

When I try to run app.py (Python 3.3, PyCrypto 2.6) my virtualenv keeps returning the error listed above. My import statement is just `from Crypto.Cipher import AES`. I looked for duplicates and you might say that there are some, but I tried the solutions (although most are not even solutions) and nothing worked.

You can see what the files are like for PyCrypto below:

![](http://i.imgur.com/ElrSw6L.png?1)

ImportError: No module named Crypto.Cipher

`python setup.py install` will automatically install packages listed in `requires=[]` using `easy_install`. How do I get it to use `pip` instead?

Can I use `pip` instead of `easy_install` for `python setup.py install` dependency resolution?

[`pip`][1] is a replacement for [`easy_install`][2]. But should I install `pip` using `easy_install` on Windows? Is there a better way?

  [1]: https://pip.pypa.io/en/stable/
  [2]: http://setuptools.readthedocs.io/en/latest/easy_install.html


How can I install pip on Windows?

I&#39;m running Python 2.7 on Windows 7 64-bit, and when I run the installer for setuptools it tells me that Python 2.7 is not installed.  The specific error message is:

    `Python Version 2.7 required which was not found in the registry`

My installed version of Python is:

    `Python 2.7 (r27:82525, Jul  4 2010, 07:43:08) [MSC v.1500 64 bit (AMD64)] on win32`

I&#39;m looking at the setuptools site and it doesn&#39;t mention any installers for 64-bit Windows.  Have I missed something or do I have to install this from source?

Installing SetupTools on 64-bit Windows

My Idle is throwing errors that and says `tkinter` can&#39;t be imported.

Is there a simple way to install `tkinter` via `pip` or `easy_install`?

There seem to be a lot of package names flying around for this...

This and other assorted variations with `tkinter-pypy` aren&#39;t working.

    pip install python-tk

I&#39;m on Windows with Python 2.7 and I don&#39;t have `apt-get` or other system package managers.

How to pip or easy_install tkinter on Windows

I&#39;m trying to uninstall all django packages in my superuser environment to ensure that all my webapp dependencies are installed to my virtualenv. 

    sudo su
    sudo pip freeze | grep -E &#39;^django-&#39; | xargs pip -q uninstall

But pip wants to confirm every package uninstall, and there doesn&#39;t seem to be a `-y` option for pip. Is there a better way to uninstall a batch of python modules? Is `rm -rf .../site-packages/` a proper way to go? Is there an easy_install alternative? 

Alternatively, would it be better to force pip to install all dependencies to the virtualenv rather than relying on the system python modules to meet those dependencies, e.g. `pip --upgrade install`, but forcing even **equally old** versions to be installed to override any system modules. I tried activating my virtualenv and then `pip install --upgrade -r requirements.txt` and that does seem to install the dependencies, even those existing in my system path, but I can&#39;t be sure if that&#39;s because my system modules were old. And `man pip` doesn&#39;t seem to guarantee this behavior (i.e. installing the **same** version of a package that already exists in the system site-packages).


Bypass confirmation prompt for pip uninstall

I have a difficult time using pip to install almost anything. I&#39;m new to coding, so I thought maybe this is something I&#39;ve been doing wrong and have opted out to easy_install to get most of what I needed done, which has generally worked. However, now I&#39;m trying to download the nltk library, and neither is getting the job done.

I tried entering

    sudo pip install nltk

but got the following response:

    /Library/Frameworks/Python.framework/Versions/2.7/bin/pip run on Sat May  4 00:15:38 2013
    Downloading/unpacking nltk
    
      Getting page https://pypi.python.org/simple/nltk/
      Could not fetch URL [need more reputation to post link]: There was a problem confirming the ssl certificate: &lt;urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm&gt;
    
      Will skip URL [need more reputation to post link]/simple/nltk/ when looking for download links for nltk
    
      Getting page [need more reputation to post link]/simple/
      Could not fetch URL https://pypi.python. org/simple/: There was a problem confirming the ssl certificate: &lt;urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm&gt;
    
      Will skip URL [need more reputation to post link] when looking for download links for nltk
    
      Cannot fetch index base URL [need more reputation to post link]
    
      URLs to search for versions for nltk:
      * [need more reputation to post link]
      Getting page [need more reputation to post link]
      Could not fetch URL [need more reputation to post link]: There was a problem confirming the ssl certificate: &lt;urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm&gt;
    
      Will skip URL [need more reputation to post link] when looking for download links for nltk
    
      Could not find any downloads that satisfy the requirement nltk
    
    No distributions at all found for nltk
    
    Exception information:
    Traceback (most recent call last):
      File &quot;/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/basecommand.py&quot;, line 139, in main
        status = self.run(options, args)
      File &quot;/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/commands/install.py&quot;, line 266, in run
        requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
      File &quot;/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/req.py&quot;, line 1026, in prepare_files
        url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
      File &quot;/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg/pip/index.py&quot;, line 171, in find_requirement
        raise DistributionNotFound(&#39;No distributions at all found for %s&#39; % req)
    DistributionNotFound: No distributions at all found for nltk
    
    --easy_install installed fragments of the library and the code ran into trouble very quickly upon trying to run it.

Any thoughts on this issue? I&#39;d really appreciate some feedback on how I can either get pip working or something to get around the issue in the meantime.

pip issue installing almost any library

Is it this, which people seem to recommend most often:

    $ sudo apt-get install python-setuptools
    $ sudo easy_install pip
    $ sudo pip install virtualenv

Or this, which I got from http://www.pip-installer.org/en/latest/installing.html:

    $ curl -O https://github.com/pypa/virtualenv/raw/master/virtualenv.py
    $ python virtualenv.py my_new_env
    $ . my_new_env/bin/activate
    (my_new_env)$ pip install ...

Or something entirely different?

What is the official &quot;preferred&quot; way to install pip and virtualenv systemwide?

I&#39;m having difficulty installing lxml with easy_install on Ubuntu 11.

When I type `$ easy_install lxml` I get:

    Searching for lxml
    Reading http://pypi.python.org/simple/lxml/
    Reading http://codespeak.net/lxml
    Best match: lxml 2.3
    Downloading http://lxml.de/files/lxml-2.3.tgz
    Processing lxml-2.3.tgz
    Running lxml-2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-7UdQOZ/lxml-2.3/egg-dist-tmp-GacQGy
    Building lxml version 2.3.
    Building without Cython.
    ERROR: /bin/sh: xslt-config: not found

    ** make sure the development packages of libxml2 and libxslt are installed **

    Using build configuration of libxslt 
    In file included from src/lxml/lxml.etree.c:227:0:
    src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory
    compilation terminated.

It seems that `libxslt` or `libxml2` is not installed. I&#39;ve tried following the instructions at http://www.techsww.com/tutorials/libraries/libxslt/installation/installing_libxslt_on_ubuntu_linux.php and http://www.techsww.com/tutorials/libraries/libxml/installation/installing_libxml_on_ubuntu_linux.php with no success.

If I try `wget ftp://xmlsoft.org/libxml2/libxml2-sources-2.6.27.tar.gz` I get

    &lt;successful connection info&gt;
    ==&gt; SYST ... done.    ==&gt; PWD ... done.
    ==&gt; TYPE I ... done.  ==&gt; CWD (1) /libxml2 ... done.
    ==&gt; SIZE libxml2-sources-2.6.27.tar.gz ... done.
    ==&gt; PASV ... done.    ==&gt; RETR libxml2-sources-2.6.27.tar.gz ... 
    No such file `libxml2-sources-2.6.27.tar.gz&#39;.

If I try the other first, I&#39;ll get to `./configure --prefix=/usr/local/libxslt --with-libxml-prefix=/usr/local/libxml2` and that will fail eventually with:

    checking for libxml libraries &gt;= 2.6.27... configure: error: Could not find libxml2 anywhere, check ftp://xmlsoft.org/.

I&#39;ve tried both versions `2.6.27` and `2.6.29` of `libxml2` with no difference.

Leaving no stone unturned, I have successfully done `sudo apt-get install libxml2-dev`, but this changes nothing.

How to install lxml on Ubuntu

I&#39;m trying to install `lxml`. I&#39;ve had a look at the website, and version 2.2.8 looked reasonable to me but when I did `easy_install lxml`, it installed version 2.3.beta1 which is not really what I want I presume.

What is the best way to fix this and how can I force easy_install to install a particular version?

(Mac os x 10.6)

Install particular version with easy_install

Is there a way to find all Python PyPI packages that were installed with easy_install or pip?  I mean, excluding everything that was/is installed with the distributions tools (in this case apt-get on Debian).


Find all packages installed with easy_install/pip?

I have dependency_links in my setup.py: 

    ...
    dependency_links = [&#39;http://github.com/robot-republic/python-s3/tarball/master.tar.gz#egg=python-s3&#39;],
    ...

But it doesn&#39;t work. However install_requires works fine.
Maybe there are another method to set up git repo as required for setup.py?

pip ignores dependency_links in setup.py

When I install PIL using easy_install or buildout it installs in such way, that I must do &#39;import Image&#39;, not &#39;from PIL import Image&#39;.

However, if I do &quot;apt-get install python-imaging&quot; or use &quot;pip -E test_pil install PIL&quot;, all work fine.

Here are examples of how I trying to install PIL using virtualenv:

    # virtualenv --no-site-packages test_pil
    # test_pil/bin/easy_install PIL
    # test_pil/bin/python
    Python 2.5.1 (r251:54863, Feb  6 2009, 19:02:12) 
    [GCC 4.0.1 (Apple Inc. build 5465)] on darwin
    Type &quot;help&quot;, &quot;copyright&quot;, &quot;credits&quot; or &quot;license&quot; for more information.
    &gt;&gt;&gt; import PIL
    Traceback (most recent call last):
      File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
    ImportError: No module named PIL

I see, that easy_install pack PIL into the Egg, and PIP does not. Same thing with buildbot, it uses eggs.

How could I install PIL properly, using easy_install or buildout?

The problem with installing PIL using virtualenv or buildout

I&#39;m trying to install the mysql bindings in a virtualenv.  I&#39;d prefer to use pip or easy_install.  pip gives me the following error:

      File &quot;setup_posix.py&quot;, line 24, in mysql_config
    
        raise EnvironmentError(&quot;%s not found&quot; % (mysql_config.path,))
    
    EnvironmentError: mysql_config not found

easy_install either gets a 404 from sourceforge or gives me a very similar error.

Does anyone know how to get around this in a virtualenv? 

virtualenv, mysql-python, pip: anyone know how?

How do I stop `setup.py` from installing a package as an egg?  Or even better, how do I `easy_install` from installing a package as an `egg`?

&gt; sudo python setup.py install

The reason being that `PyDev` is rather picky about packages in `egg` format...  The package I am interested in at the moment is `boto`.

**Update:** I found the *brute force* way of doing it:

    sudo easy_install -m boto
    cd path/to/boto-xyz.egg
    sudo mv boto ..
    sudo rm -rf boto-xyz.egg



stopping setup.py from installing as egg

This is what I tried:

    $ easy_install-2.6 -d /home/user/lib/python2.6 MySQLdb  
    Searching for MySQLdb  
    Reading http://pypi.python.org/simple/MySQLdb/  
    Couldn&#39;t find index page for &#39;MySQLdb&#39; (maybe misspelled?)  
    Scanning index of all packages (this may take a while)  
    Reading http://pypi.python.org/simple/  
    No local packages or download links found for MySQLdb  
    error: Could not find suitable distribution for Requirement.parse(&#39;MySQLdb&#39;)  



Why can&#39;t easy_install find MySQLdb?

After installing Python 2.7 on Windows XP, then manually setting the `%PATH%` to `python.exe` (why won&#39;t the python installer do this?), then installing `setuptools 0.6c11` (why doesn&#39;t the python installer do this?), then manually setting the `%PATH%` to `easy_install.exe` (why doesn&#39;t the installer do this?), I finally tried to install a python package with `easy_install`, but `easy_install` failed when it couldn&#39;t install the pywin32 package, which is a dependency. **How can I make easy_install work properly on Windows XP?** The failure follows:


&lt;pre&gt;C:\&gt;easy_install winpexpect
Searching for winpexpect
Best match: winpexpect 1.4
Processing winpexpect-1.4-py2.7.egg
winpexpect 1.4 is already the active version in easy-install.pth

Using c:\python27\lib\site-packages\winpexpect-1.4-py2.7.egg
Processing dependencies for winpexpect
Searching for pywin32&gt;=214
Reading http://pypi.python.org/simple/pywin32/
Reading http://sf.net/projects/pywin32
Reading http://sourceforge.net/project/showfiles.php?group_id=78018
No local packages or download links found for pywin32&gt;=214
Best match: None
Traceback (most recent call last):
  File &quot;C:\python27\scripts\easy_install-script.py&quot;, line 8, in &lt;module&gt;
    load_entry_point(&#39;setuptools==0.6c11&#39;, &#39;console_scripts&#39;, &#39;easy_install&#39;)()
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 1712, in main
    with_ei_usage(lambda:
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 1700, in with_ei_usage
    return f()
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 1716, in &lt;lambda&gt;
    distclass=DistributionWithoutHelpCommands, **kw
  File &quot;C:\python27\lib\distutils\core.py&quot;, line 152, in setup
    dist.run_commands()
  File &quot;C:\python27\lib\distutils\dist.py&quot;, line 953, in run_commands
    self.run_command(cmd)
  File &quot;C:\python27\lib\distutils\dist.py&quot;, line 972, in run_command
    cmd_obj.run()
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 211, in run
    self.easy_install(spec, not self.no_deps)
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 446, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 481, in install_item
    self.process_distribution(spec, dists[0], deps, &quot;Using&quot;)
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 519, in process_distribution
    [requirement], self.local_index, self.easy_install
  File &quot;C:\python27\lib\site-packages\pkg_resources.py&quot;, line 563, in resolve
    dist = best[req.key] = env.best_match(req, self, installer)
  File &quot;C:\python27\lib\site-packages\pkg_resources.py&quot;, line 799, in best_match
    return self.obtain(req, installer) # try and download/install
  File &quot;C:\python27\lib\site-packages\pkg_resources.py&quot;, line 811, in obtain
    return installer(requirement)
  File &quot;C:\python27\lib\site-packages\setuptools\command\easy_install.py&quot;, line 434, in easy_install
    self.local_index
  File &quot;C:\python27\lib\site-packages\setuptools\package_index.py&quot;, line 475, in fetch_distribution
    return dist.clone(location=self.download(dist.location, tmpdir))
AttributeError: &#39;NoneType&#39; object has no attribute &#39;clone&#39;
&lt;/pre&gt;

How to use Python&#39;s &quot;easy_install&quot; on Windows ... it&#39;s not so easy

I have managed to get spyder installed and functioning on my mac but I want to add in a few modules that it doesn&#39;t include by default (mahotas and pymorph).  

I installed both via easy_install in the terminal and both seemed to install without any error messages.  Running python from a terminal and using *import mahotas* and *import pymorph* works just fine without error messages.  However, when I run the same lines from a script within spyder I get the following error:

    Traceback (most recent call last):
    File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
    File &quot;/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/spyderlib/widgets/externalshell/sitecustomize.py&quot;, line 493, in runfile
     execfile(filename, namespace)
    File &quot;/Users/Name/Documents/Python/dna.py&quot;, line 11, in &lt;module&gt;
     import pymorph
    ImportError: No module named pymorph

All I&#39;m trying to do right now is run the import lines, that&#39;s it.  I can&#39;t seem to find anything about this.  I&#39;m guessing that spyder uses a separate install of python and that installing modules via the terminal installs them only to the system version of python. How do I add them to spyder?

**Specs:**

Mac OSX 10.7.4

Spyder 2.1.9


Adding a module (Specifically pymorph) to Spyder (Python IDE)

I have a Mac running Python 2.6. When I try to use `easy_install` I get this message:

    /usr/bin/easy_install-2.6:7: UserWarning: Module pkg_resources was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.pyc, but /Library/Python/2.6/site-packages is being added to sys.path
      from pkg_resources import load_entry_point
    /usr/bin/easy_install-2.6:7: UserWarning: Module site was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site.pyc, but /Library/Python/2.6/site-packages is being added to sys.path
      from pkg_resources import load_entry_point
    Traceback (most recent call last):
      File &quot;/usr/bin/easy_install-2.6&quot;, line 10, in &lt;module&gt;
        load_entry_point(&#39;setuptools==0.6c9&#39;, &#39;console_scripts&#39;, &#39;easy_install&#39;)()
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.py&quot;, line 271, in load_entry_point
        return False
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.py&quot;, line 2173, in load_entry_point
        deps = []
    ImportError: Entry point (&#39;console_scripts&#39;, &#39;easy_install&#39;) not found

I am very confused by this and I want to know how I can fix this. Previously I didn&#39;t get this message, then after installing `pip` and uninstalling it, easy_install no longer works. I was wondering how I could fix this, or restore the default Python or easy_install setting on Mac.


All Easy Install Solutions on Gang of Coders

Total of 26 Easy Install Solutions