I m trying to use python in powershell

Question

I m trying to follow Zed Shaw s guide for Learning Python the Hard Way   I need to use python in Powershell   I have Python 2 7 3 installed in C  Python27   Whenever I type python into Powershell  I get an error that says the term  python  is not recognized as the name of a cmdlet  function  script file  or operable program   I also typed in this   Environment   SetEnvironmentVariable  Path     env Path C  Python27    User   That was a suggested solution provided  but typing python into Powershell still does nothing   I can type in  start python  and it opens up a window with python but I need it in Powershell   Thanks

User · Answer

Just eliminate the word  User   It will work

User · Answer

To be able to use Python immediately without restarting the shell window you need to change the path for the machine  the process and the user   Function Get-EnvVariableNameList        cmdletbinding         allEnvVars   Get-ChildItem Env       allEnvNamesArray    allEnvVars Name      pathEnvNamesList   New-Object System Collections ArrayList      pathEnvNamesList AddRange  allEnvNamesArray      return   pathEnvNamesList    Function Add-EnvVarIfNotPresent   Param    string  variableNameToAdd   string  variableValueToAdd            nameList   Get-EnvVariableNameList      alreadyPresentCount     nameList   Where    -like  variableNameToAdd   Count       message          if   alreadyPresentCount -eq 0             System Environment   SetEnvironmentVariable  variableNameToAdd   variableValueToAdd   System EnvironmentVariableTarget   Machine       System Environment   SetEnvironmentVariable  variableNameToAdd   variableValueToAdd   System EnvironmentVariableTarget   Process       System Environment   SetEnvironmentVariable  variableNameToAdd   variableValueToAdd   System EnvironmentVariableTarget   User           message    Enviromental variable added to machine  process and user to include  variableNameToAdd            else                message    Environmental variable already exists  Consider using a different function to modify it            Write-Information  message     Function Get-EnvExtensionList        pathExtArray      env PATHEXT  Split             pathExtList   New-Object System Collections ArrayList      pathExtList AddRange  pathExtArray      return   pathExtList     Function Add-EnvExtension   Param    string  pathExtToAdd            pathList   Get-EnvExtensionList      alreadyPresentCount     pathList   Where    -like  pathToAdd   Count     if   alreadyPresentCount -eq 0                 pathList Add  pathExtToAdd           returnPath    pathList -join              System Environment   SetEnvironmentVariable  pathext    returnPath   System EnvironmentVariableTarget   Machine           System Environment   SetEnvironmentVariable  pathext    returnPath   System EnvironmentVariableTarget   Process           System Environment   SetEnvironmentVariable  pathext    returnPath   System EnvironmentVariableTarget   User           message    Path extension added to machine  process and user paths to include  pathExtToAdd            else                message    Path extension already exists            Write-Information  message    Function Get-EnvPathList        cmdletbinding         pathArray      env PATH  Split             pathList   New-Object System Collections ArrayList      pathList AddRange  pathArray      return   pathList    Function Add-EnvPath   Param    string  pathToAdd            pathList   Get-EnvPathList      alreadyPresentCount     pathList   Where    -like  pathToAdd   Count     if   alreadyPresentCount -eq 0                 pathList Add  pathToAdd           returnPath    pathList -join              System Environment   SetEnvironmentVariable  path    returnPath   System EnvironmentVariableTarget   Machine           System Environment   SetEnvironmentVariable  path    returnPath   System EnvironmentVariableTarget   Process           System Environment   SetEnvironmentVariable  path    returnPath   System EnvironmentVariableTarget   User           message    Path added to machine  process and user paths to include  pathToAdd            else                message    Path already exists            Write-Information  message    Add-EnvExtension   PY  Add-EnvExtension   PYW  Add-EnvPath  C  Python27

User · Answer

Try the Command this way   PS C  Users XXX gt python exe   instead of   C  Users XXX gt python

User · Answer

As MaxPRafferty mentioned      Just a note to anyone landing here from google  the answers setting path are all correct  but this problem probably stems from not giving the python installer administrative rights it needs to set the path itself  An alternative may be to simply right click the installer and select run as administrator  then repair the installation  If that still doesn t work  choose the  Environment  answer below that corresponds to your python version and installation directory      MaxPRafferty Nov 18  15 at 20 06    Maybe it is wise to let Python installer to add the path itself  The trap here is that by default Python installer does NOT add path for you  You should look carefully  by scrolling down to see what has been installed  during the installation process instead of directly nexting to the end   What he missed saying is that you cannot run as administrator once you have installed it  Uninstall and reinstall may do  but the simplest is to right click and Troubleshoot compatibility  being careful this time to check the  add path  in the  what to install  dialog before hiting next  Then restart powershell  Voil    It works for me

User · Answer

download Nodejs for windows install node-vxxx msi find  quot Install Additional Tools for Node js quot  script open and install it reopen a new shell prompt  type  quot python quot   gt  gt  press  quot enter quot   gt  gt  it works

User · Answer

For what s worth  this command did it for me  Python3 3       System Environment   SetEnvironmentVariable  PATH    Env Path     C  Python33    Machine     I just had to restart the Powershell after that

User · Answer

For a permanent solution I found the following worked    Environment   SetEnvironmentVariable  Path     env Path C  Python 3 5

User · Answer

The Directory is not set correctly so Please follow these steps     MyComputer  Right Click Properties  System Properties   Advanced  tab  Environment Variables   Path   Edit  In the  Variable value  box  Make sure you see following    c  python27  c  python27 scripts Click  OK   Test this change by restarting your windows powershell  Type   python Now python version 2 runs   yay

User · Answer

env path   env Path C  Python27  will only set it for the current session  Next time you open Powershell  you will have to do the same thing again   The  Environment   SetEnvironmentVariable   is the right way  and it would have set your PATH environment variable permanently  You just have to start Powershell again to see the effect in this case

User · Answer

This works for me permanently    Environment   SetEnvironmentVariable  Path     env Path C  Python27   User

User · Answer

Sometimes you install Python on Windows and it doesn t configure the path correctly       Make sure you enter  Environment   SetEnvironmentVariable  Path     env Path C  Python27    User   in PowerShell to configure it correctly      You also have to either restart PowerShell or your whole computer to get it to really be fixed

User · Answer

From the Python Guide  this is what worked for me  Python 2 7 9    Environment   SetEnvironmentVariable  Path     env Path C  Python27  C  Python27 Scripts     User

User · Answer

Try setting the path this way     env path   env Path C  Python27

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