Why does pip install inside Python raise a SyntaxError

Question

I m trying to use pip to install a package   I try to run pip install from the Python shell  but I get a SyntaxError   Why do I get this error   How do I use pip to install the package    gt  gt  gt  pip install selenium                 SyntaxError  invalid syntax

User · Answer

To run pip in Python 3 x  just follow the instructions on Python s page  Installing Python Modules   python -m pip install SomePackage   Note that this is run from the command line and not the python shell  the reason for syntax error in the original question

User · Answer

Initially I too faced this same problem  I installed python and when I run pip command it used to throw me an error like shown in pic below       Make Sure pip path is added in environmental variables  For me  the python and pip installation path is   Python  C  Users fhhz AppData Local Programs Python Python38  pip  C  Users fhhz AppData Local Programs Python Python38 Scripts Both these paths were added to path in environmental variables   Now Open a new cmd window and type pip  you should be seeing a screen as below       Now type pip install  lt  lt package-name gt  gt   Here I m installing package spyder so my command line statement will be as pip install spyder and here goes my running screen       and I hope we are done with this

User · Answer

pip is run from the command line  not the Python interpreter  It is a program that installs modules  so you can use them from Python  Once you have installed the module  then you can open the Python shell and do import selenium   The Python shell is not a command line  it is an interactive interpreter  You type Python code into it  not commands

User · Answer

Programmatically  the following currently works   I see all the answers post 10 0 and all  but none of them are the correct path for me   Within Kaggle for sure  this apporach works  from pip  internal import main as  main  package names   pandas    packages to install  main   install     package names     --upgrade

User · Answer

you need to type it in cmd not in the IDLE  becuse IDLE is not an command prompt if you want to install something from IDLE type this   gt  gt  gt from pip   main   import  main as main  gt  gt  gt main  args splitted by space in list example   install    requests      this is calling pip like pip  lt commands gt  in terminal  The commands will be seperated by spaces that you are doing there to

User · Answer

Use the command line  not the Python shell  DOS  PowerShell in Windows    C  Program Files Python2 7 Scripts gt  pip install XYZ   If you installed Python into your PATH using the latest installers  you don t need to be in that folder to run pip   Terminal in Mac or Linux    pip install XYZ

User · Answer

Try upgrade pip with the below command and retry  python -m pip install -U pip

User · Answer

As  sinoroc suggested correct way of installing a package via pip is using separate process since pip may cause closing a thread or may require a restart of interpreter to load new installed package so this is the right way of using the API  subprocess check call  sys executable   -m    pip    install    SomeProject    but since Python allows to access internal API and you know what you re using the API for you may want to use internal API anyway eg  if you re building own GUI package manager with alternative resourcess like https   www lfd uci edu  gohlke pythonlibs   Following soulution is OUT OF DATE  instead of downvoting suggest updates  see https   github com pypa pip issues 7498 for reference   UPDATE  Since pip version 10 x there is no more get installed distributions   or main method under import pip instead use import pip  internal as pip   UPDATE ca  v 18 get installed distributions   has been removed  Instead you may use generator freeze like this   from pip  internal operations freeze import freeze  print  package for package in freeze        eg output   pip  19 0 3      If you want to use pip inside the Python interpreter  try this   import pip  package names   selenium    requests    packages to install pip main   install     package names     --upgrade       --upgrade to install or update existing packages   If you need to update every installed package  use following   import pip  for i in pip get installed distributions        pip main   install   i key   --upgrade      If you want to stop installing other packages if any installation fails  use it in one single pip main     call   import pip  package names    i key for i in pip get installed distributions    pip main   install     package names     --upgrade      Note  When you install from list in file with -r   --requirement parameter you do NOT need open   function   pip main   install    -r    filename      Warning  Some parameters as simple --help may cause python interpreter to stop   Curiosity  By using pip exe you actually use python interpreter and pip module anyway  If you unpack pip exe or pip3 exe regardless it s python 2 x or 3 x  inside is the SAME single file   main   py     - - coding  utf-8 - - import re import sys  from pip import main  if   name         main         sys argv 0    re sub r  -script  pyw    exe          sys argv 0       sys exit main

User · Answer

If you are doing it from command line  try - python -m pip install selenium or  for Python3 and above  python3 -m pip install selenium

[python] Why does "pip install" inside Python raise a SyntaxError?

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