Adding Python Path on Windows 7

Question

I ve been trying to add the Python path to the command line on Windows 7  yet no matter the method I try  nothing seems to work  I ve used the set command  I ve tried adding it through the Edit Environment variables prompt etc   Further more if I run the set command on the command line it lists this  python   c  python27   Yet it still doesn t recognize the Python command   Reading the documentation  and various other sources hasn t seemed to help   Edit  Just to clarify further  I ve appended the path of the Python executable to PATH in edit environment prompt  Doesn t seem to work

User · Answer

write that on your Command Prompt   set Path  path    Replace  path  by the Path of your Python Folder Example   set Path C  Python27

User · Answer

I ve had a problem with this for a LONG time  I added it to my path in every way I could think of but here s what finally worked for me    Right click on  My computer  Click  Properties  Click  Advanced system settings  in the side panel Click  Environment Variables  Click the  New  below system variables in name enter pythonexe  or anything you want  in value enter the path to your python  example  C  Python32   Now edit the Path variable  in the system part  and add  pythonexe   to the end of what s already there   IDK why this works but it did for me   then try typing  python  into your command line and it should work     Edit   Lately I ve been using this program which seems to work pretty well  There s also this one which looks pretty good too  although I ve never tried it

User · Answer

I just installed Python 3 3 on Windows 7 using the option  add python to PATH    In PATH variable  the installer automatically added a final backslash  C  Python33  and so it did not work on command prompt  i tried closing opening the prompt several times   I removed the final backslash and then it worked  C  Python33  Thanks Ram Narasimhan for your tip  4

User · Answer

Working with Windows environment variables is always a horrible experience  Recently  I found an amazing tool called Rapid Environment Editor  which gives an awesomely simple GUI for managing them   If you use chocolatey  you can install it using choco install rapidee  Otherwise  take a look at http   www rapidee com en download   Re-reading this  it sounds like a paid shill  but I swear I m not  It s just been one of the most useful utilities in my toolkit for a while and I m surprised no one seems to know about it

User · Answer

Python comes with a small utility that does just this   From the command line run   c  python27 tools scripts win add2path py   Make sure you close the command window  with exit or the close button  and open it again

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I organized my python environment variable like this under Win7 64-bit using cmd   I set the variable PYTHONPATH via environment variable menue of windows and added  PYTHONPATH  to the PATH variable        PYTHONPATH   The cmd shell expands the variable correctly to this   C   gt echo  PYTHONPATH  C  python27 c  python27 lib C  python27 scripts   Do not forget to restart cmd shell after changing PATH

User · Answer

When setting Environmental Variables in Windows  I have gone wrong on many  many occasions   I thought I should share a few of my past mistakes here hoping that it might help someone   These apply to all Environmental Variables  not just when setting Python Path   Watch out for these possible mistakes    Kill and reopen your shell window  Once you make a change to the ENVIRONMENTAL Variables  you have to restart the window you are testing it on  NO SPACES when setting the Variables  Make sure that you are adding the  C  Python27 WITHOUT any spaces   It is common to try C  SomeOther  C  Python27 That space     after the semicolon is not okay   USE A BACKWARD SLASH when spelling out your full path  You will see forward slashes when you try echo  PATH but only backward slashes have worked for me  DO NOT ADD a final backslash  Only C  Python27 NOT C  Python27    Hope this helps someone

User · Answer

Hold Win and press Pause  Click Advanced System Settings  Click Environment Variables  Append  C  python27 to the Path variable  Restart Command Prompt

User · Answer

Make sure you don t add a space before the new directory   Good  old old old new  Bad  old old old  new

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I know this post is old but I d like to add that the solutions assume admin privs  If you don t have those you can   Go to control panel  type path  this is Windows 7 now so that s in the Search box  and click  Edit Environment variables for your account   You ll now see the Environment Variable dialog with  User variables  on the top and  System variables  below   You can  as a user  click the top  New  button and add   Variable name  PATH Variable value  C  Python27   no spaces anywhere  and click OK  Once your command prompt is restarted  any PATH in the User variables is appended to the end of the System Path  It doesn t replace the PATH in any other way   If you want a specific full path set up  you re better off creating a batch file like this little one    echo off PATH C  User Me Programs mingw bin C  User Me Programs C  Windows system32 title Compiler Environment -  Username   Computername  cmd   Call it  compiler bat  or whatever and double click to start it  Or link to it  Or pin it etc

User · Answer

The following program will add the python executable path and the subdir Scripts  which is where e g  pip and easy install are installed  to your environment  It finds the path to the python executable from the registry key binding the  py extension  It will remove old python paths in your environment  Works with XP  and probably Vista  as well  It only uses modules that come with the basic windows installer     coding  utf-8  import sys import os import time import  winreg import ctypes  def find python                retrieves the commandline for  py extensions from the registry             hKey    winreg OpenKey  winreg HKEY CLASSES ROOT                             r Python File shell open command         get the default value     value  typ    winreg QueryValueEx  hKey  None      program   value split      1      if not program lower   endswith r  python exe            return None     return os path dirname program   def extend path pypath  remove False  verbose 0  remove old True                  script False               extend pypath  adds pypath to the PATH env  variable as defined in the     registry  and then notifies applications  e g  the desktop  of this change          Already opened DOS-Command prompts are not updated          Newly opened prompts will have the new path  inherited from the      updated windows explorer desktop      options      remove  default unset   remove from PATH instead of extend PATH     remove old  default set   removes any  old  python paths first     script  default unset   try to add remove the Scripts subdirectory          of pypath  pip  easy install  as well              sd    Scripts    scripts subdir     hKey    winreg OpenKey   winreg HKEY LOCAL MACHINE                 r SYSTEM CurrentControlSet Control Session Manager Environment                  0   winreg KEY READ    winreg KEY SET VALUE       value  typ    winreg QueryValueEx  hKey   PATH       vals   value split          assert isinstance vals  list      if not remove and remove old          new vals              for v in vals              pyexe   os path join v   python exe               if v    pypath and os path exists pyexe                   if verbose  gt  0                      print  removing from PATH    v                 continue             if script and v    os path join pypath   sd  and                  os path exists v replace  sd  pyexe                    if verbose  gt  0                      print  removing from PATH    v                 continue             new vals append v          vals   new vals     if remove          try              vals remove pypath          except ValueError              if verbose  gt  0                  print  path element   pypath   not found              return         if script              try                  vals remove os path join pypath   sd               except ValueError                  pass             print  removing from PATH    pypath     else          if pypath in vals              if verbose  gt  0                  print  path element   pypath   already in PATH              return         vals append pypath          if verbose  gt  1              print  adding to PATH    pypath         if script              if not pypath      Scripts  in vals                  vals append pypath      Scripts               if verbose  gt  1                  print  adding to PATH    pypath      Scripts       winreg SetValueEx hKey   PATH   0  typ      join vals         winreg SetValueEx hKey   OLDPATH   0  typ  value        winreg FlushKey hKey        notify other programs     SendMessage   ctypes windll user32 SendMessageW     HWND BROADCAST   0xFFFF     WM SETTINGCHANGE   0x1A     SendMessage HWND BROADCAST  WM SETTINGCHANGE  0  u Environment       if verbose  gt  1          print  Do not forget to restart any command prompts   if   name         main         remove    --remove  in sys argv     script    --noscripts  not in sys argv     extend path find python    verbose 2  remove remove  script script

User · Answer

Try adding this python bat file to System32 folder and the command line will now run python when you type in python   python bat   C  Python27 python exe      Source   https   github com KartikTalwar dotfiles blob master bat python bat

User · Answer

Open cmd exe with administrator privileges  right click on app   Then type      setx path   path  C  Python27     Remember to end with a semi-colon and don t include a trailing slash

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If Python was installed with another program  such as ArcGIS 10 1 in my case  then you also must include any extra folders that path to the python exe in your Environment Variables   So my Environment Variables looks like this   System variables   Path   add  C  Python27 ArcGIS10 1

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This question is pretty old  but I just ran into a similar problem and my particular solution wasn t listed here   Make sure you don t have a folder in your PATH that doesn t exist   In my case  I had a bunch of default folders  Windows  Powershell  Sql Server  etc  and then a custom C  bin that I typically use  and then various other tweaks like c  python17  etc  It turns out that the cmd processor was finding that c  bin didn t exist and then stopped processing the rest of the variable   Also  I don t know that I ever would have noticed this without PATH manager  It nicely highlighted the fact that that item was invalid

User · Answer

If you have got frustrated by setting the path for the python just download the new version of python uninstall the older version of the python and while installing the new version it will ask whether to set path mark that and install  its the best way

User · Answer

For anyone trying to achieve this with Python 3 3   the Windows installer now includes an option to add python exe to the system search path  Read more in the docs

User · Answer

For people getting the windows store window when writing python in the console  all you have to do is go to configuration - gt  Manage app execution aliases and disable the toggles that say python  then  add the following folders to the PATH  C  Users alber AppData Local Programs Python Python39   C  Users alber AppData Local Programs Python Python39 Scripts

User · Answer

You need to make changes in your system variable -- Right click on  My computer  -- Click  Properties  -- Click  Advanced system settings  in the side panel -- Click on Environment Variable -- You will two sections of user variable and system variable -- Under system variable section search for the variable  Path  click on edit and add    C  Python27    without quotes  save it -- Now open command line type  path  hit enter you will see path variable has been modified -- Now type python --version you will see the python version  And it is done

User · Answer

You can set the path from the current cmd window using the PATH   command  That will only add it for the current cmd instance  if you want to add it permanently  you should add it to system variables   Computer   Advanced System Settings   Environment Variables   You would goto your cmd instance  and put in PATH C  Python27   PATH

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