Checking whether the pip is installed

Question

I am using Python 2 7 12 and I want to check whether the pip is installed or not  For this  in command line of Python application I wrote pip list and pressed enter  However  I get an error like   File stdin  line 1  pip list  Syntax Error  invalid syntax   So  how can I solve this issue and get the list of modules as an output   Thanks

User · Answer

If you are on a linux machine running Python 2 you can run this commands  1st make sure python 2 is installed  python2 --version  2nd check to see if pip is installed  pip --version  If you are running Python 3 you can run this command  1st make sure python 3 is installed  python3 --version  2nd check to see if pip3 is installed  pip3 --version  If you do not have pip installed you can run these commands to install pip  it is recommended you install pip for Python 2 and Python 3   Install pip for Python 2  sudo apt install python-pip  Then verify if it is installed correctly  pip --version  Install pip for Python 3  sudo apt install python3-pip  Then verify if it is installed correctly  pip3 --version  For more info see  https   itsfoss com install-pip-ubuntu  UPDATE I would like to mention a few things  When working with Django I learned that my Linux install requires me to use python 2 7  so switching my default python version for the python and pip command alias s to python 3 with alias python python3 is not recommended  Therefore I use the python3 and pip3 commands when installing software like Django 3 0  which works better with Python 3  And I keep their alias s pointed towards whatever Python 3 version I want like so alias python3 python3 8  Keep In Mind When you are going to use your package in the future you will want to use the pip or pip3 command depending on which one you used to initially install the package  So for example if I wanted to change my change my Django package version I would use the pip3 command and not pip like so  pip3 install Django  3 0 11  Notice When running checking the packages version for python    python -m django --version and python3    python3 -m django --version  two different versions of django will show because I installed django v3 0 11 with pip3 and django v1 11 29 with pip

User · Answer

You need to run pip list in bash not in python   pip list DEPRECATION  Python 2 6 is no longer supported by the Python core team  please upgrade your Python  A future version of pip will drop support for Python 2 6 argparse  1 4 0  Beaker  1 3 1  cas  0 15  cups  1 0  cupshelpers  1 0  decorator  3 0 1  distribute  0 6 10  ---and other modules

User · Answer

Use command line and not python  TLDR  On Windows  do   python -m pip --version OR  py -m pip --version Details   On Windows    gt   open windows terminal   Start  or Windows Key   gt  type  quot cmd quot  Press Enter You should see a screen that looks like this   To check to see if pip is installed  python -m pip --version  if pip is installed  go ahead and use it  for example  Z   gt python -m pip install selenium  if not installed  install pip  and you may need to add its path to the environment variables   basic - windows   add path to environment variables  basic advanced  if python is NOT installed you will get a result similar to the one below   Install python  add its path to environment variables  UPDATE  for newer versions of python replace  quot python quot  with py - see  gimmegimme s comment and link https   packaging python org guides installing-using-pip-and-virtual-environments

User · Answer

In CMD  type   pip freeze   And it will show you a list of all the modules installed including the version number   Output   aiohttp  1 1 4 async-timeout  1 1 0 cx-Freeze  4 3 4 Django  1 9 2 django-allauth  0 24 1 django-cors-headers  1 2 2 django-crispy-forms  1 6 0 django-robots  2 0 djangorestframework  3 3 2 easygui  0 98 0 future  0 16 0 httpie  0 9 6 matplotlib  1 5 3 multidict  2 1 2 numpy  1 11 2 oauthlib  1 0 3 pandas  0 19 1 pefile  2016 3 28 pygame  1 9 2b1 Pygments  2 1 3 PyInstaller  3 2 pyparsing  2 1 10 pypiwin32  219 PyQt5  5 7 pytz  2016 7 requests  2 9 1 requests-oauthlib  0 6 six  1 10 0 sympy  1 0 virtualenv  15 0 3 xlrd  1 0 0 yarl  0 7 0

User · Answer

which pip   or     pip -V    execute this command into your terminal  It should display the location of executable file eg   usr local bin pip and the second command will display the version if the pip is installed correctly

User · Answer

pip list is a shell command  You should run it in your shell  bash cmd   rather than invoke it from python interpreter  pip does not provide a stable API  The only supported way of calling it is via subprocess  see docs and the code at the end of this answer  However  if you want to just check if pip exists locally  without running it  and you are running Linux  I would suggest that you use bash s which command  which pip  It should show you whether the command can be found in bash s PATH aliases  and if it does  what does it actually execute  If running pip is not an issue  you could just do  python -m pip --version  If you really need to do it from a python script  you can always put the import statement into a try   except block  try      import pip except ImportError      print  quot Pip not present  quot    Or check what s the output of a pip --version using subprocess module  subprocess check call  sys executable   -m    pip    --version

[python] Checking whether the pip is installed?

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