How to list all installed packages and their versions in Python

Question

Is there a way in Python to list all installed packages and their versions   I know I can go inside python Lib site-packages and see what files and directories exist  but I find this very awkward  What I m looking for something that is similar to npm list i e  npm-ls

User · Answer

If you re using anaconda   conda list   will do it  See  https   conda io docs  downloads conda-cheatsheet pdf

User · Answer

for using code  for example to check what modules in Hackerrank etc   import os os system  quot pip list quot

User · Answer

To run this in later versions of pip  tested on pip  10 0 1  use the following   from pip  internal operations freeze import freeze for requirement in freeze local only True       print requirement

User · Answer

If you have pip install and you want to see what packages have been installed with your installer tools you can simply call this   pip freeze   It will also include version numbers for the installed packages   Update  pip has been updated to also produce the same output as pip freeze by calling   pip list   Note  The output from pip list is formatted differently  so if you have some shell script that parses the output  maybe to grab the version number  of freeze and want to change your script to call list  you ll need to change your parsing code

User · Answer

Here s a way to do it using PYTHONPATH instead of the absolute path of your python libs dir   for d in  echo    PYTHONPATH     tr       n    do ls    d    done       10 43 Jonathan MacBookPro-2   xCode Projects Python for iOS trunk Python for iOS Python for iOS    for d in  echo   PYTHONPATH    tr       n    do ls    d    done libpython2 7 dylib pkgconfig          python2 7 BaseHTTPServer py       pyio pyc              cgitb pyo              doctest pyo            htmlentitydefs pyc     mimetools pyc          plat-mac               runpy py               stringold pyc          traceback pyo BaseHTTPServer pyc      pyio pyo              chunk py               dumbdbm py             htmlentitydefs pyo     mimetools pyo          platform py            runpy pyc              stringold pyo          tty py BaseHTTPServer pyo      strptime py           chunk pyc              dumbdbm pyc            htmllib py             mimetypes py           platform pyc           runpy pyo              stringprep py          tty pyc Bastion py              strptime pyc          chunk pyo              dumbdbm pyo            htmllib pyc            mimetypes pyc          platform pyo           sched py               stringprep pyc         tty pyo Bastion pyc             strptime pyo          cmd py

User · Answer

You can try   Yolk  For install yolk  try   easy install yolk      Yolk is a Python tool for obtaining information about installed Python   packages and querying packages avilable on PyPI  Python Package   Index        You can see which packages are active  non-active or in development   mode and show you which have newer versions available by querying   PyPI

User · Answer

If you want to get information about your installed python distributions and don t want to use your cmd console or terminal for it  but rather through python code  you can use the following code  tested with python 3 4    import pip  needed to use the pip functions for i in pip get installed distributions local only True       print i    The pip get installed distributions local only True  function-call returns an iterable and because of the for-loop and the print function the elements contained in the iterable are printed out separated by new line characters   n   The result will  depending on your installed distributions  look something like this   cycler 0 9 0 decorator 4 0 4 ipykernel 4 1 0 ipython 4 0 0 ipython-genutils 0 1 0 ipywidgets 4 0 3 Jinja2 2 8 jsonschema 2 5 1 jupyter 1 0 0 jupyter-client 4 1 1      and so on

User · Answer

yes  you should be using pip as your python package manager   http   pypi python org pypi pip    with pip installed packages  you can do a   pip freeze   and it will list all installed packages  You should probably also be using virtualenv and virtualenvwrapper  When you start a new project  you can do   mkvirtualenv my new project   and then  inside that virtualenv   do  pip install all your stuff   This way  you can workon my new project and then pip freeze to see which packages are installed for that virtualenv project    for example         mkvirtualenv yo dude New python executable in yo dude bin python Installing setuptools            done  Installing pip               done  virtualenvwrapper user scripts creating  Users aaylward dev virtualenvs yo dude bin predeactivate virtualenvwrapper user scripts creating  Users aaylward dev virtualenvs yo dude bin postdeactivate virtualenvwrapper user scripts creating  Users aaylward dev virtualenvs yo dude bin preactivate virtualenvwrapper user scripts creating  Users aaylward dev virtualenvs yo dude bin postactivate virtualenvwrapper user scripts creating  Users aaylward dev virtualenvs yo dude bin get env details   yo dude       pip install django Downloading unpacking django   Downloading Django-1 4 1 tar gz  7 7Mb   7 7Mb downloaded   Running setup py egg info for package django  Installing collected packages  django   Running setup py install for django     changing mode of build scripts-2 7 django-admin py from 644 to 755      changing mode of  Users aaylward dev virtualenvs yo dude bin django-admin py to 755 Successfully installed django Cleaning up      yo dude       pip freeze Django  1 4 1 wsgiref  0 1 2   yo dude          or if you have a python package with a requirements pip file   mkvirtualenv my awesome project pip install -r requirements pip pip freeze   will do the trick

User · Answer

My take      usr bin env python3  import pkg resources  dists    str d  replace           for d in pkg resources working set  for i in dists      print i

User · Answer

from command line   python -c help  modules     can be used to view all modules  and for specific modules  python -c help  os     For Linux below will work  python -c  help  os

User · Answer

help  modules   should do it for you   in IPython    In  1   import                       import press-TAB Display all 631 possibilities   y or n  ANSI                   audiodev               markupbase AptUrl                 audioop                markupsafe ArgImagePlugin         avahi                  marshal BaseHTTPServer         axi                    math Bastion                base64                 md5 BdfFontFile            bdb                    mhlib BmpImagePlugin         binascii               mimetools BufrStubImagePlugin    binhex                 mimetypes CDDB                   bisect                 mimify CDROM                  bonobo                 mmap CGIHTTPServer          brlapi                 mmkeys Canvas                 bsddb                  modulefinder CommandNotFound        butterfly              multifile ConfigParser           bz2                    multiprocessing ContainerIO            cPickle                musicbrainz2 Cookie                 cProfile               mutagen Crypto                 cStringIO              mutex CurImagePlugin         cairo                  mx DLFCN                  calendar               netrc DcxImagePlugin         cdrom                  new Dialog                 cgi                    nis DiscID                 cgitb                  nntplib DistUpgrade            checkbox               ntpath

User · Answer

If this is needed to run from within python you can just invoke subprocess   from subprocess import PIPE  Popen  pip process   Popen   pip freeze    stdout PIPE                     stderr PIPE  shell True  stdout  stderr   pip process communicate   print stdout decode  utf-8

[python] How to list all installed packages and their versions in Python?

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