anaconda – path environment variable in windows
Question:
I am trying to run python from the windows command prompt (windows 10). So the result is the typical one when the path environment variable is not configured
c:windowssystem32>python
'python' is not recognized as an internal or external command, operable
program or batch file
however, I am not sure which is the right directory I should set up in the path variable.
I tried a few variations, and none of them work, including:
c:usersxxxanaconda3
c:usersxxxanaconda3Scripts
c:usersxxxanaconda3libspython34
and none of them works.
Does anyone have experience with this particular system constellation (windows, anaconda). Thanks.
Answers:
it turns out I was mistaken.
Solution is: in anaconda (as well as in other implementations), set the path environment variable to the directory where ‘python.exe’ is installed.
As a default, the python.exe file in anaconda is in:
c:.....anaconda
after you do that, obviously, the python command works, in my case, yielding the following.
python
Python 3.4.3 |Anaconda 2.2.0. (64|bit)|(default, Nov 7 2015), etc, etc
C:Users<Username>AppDataLocalContinuumanaconda2
For me this was the default installation directory on Windows 7. Found it via Rusy’s answer
Instead of giving the path following way:
C:UsersUser_nameAppDataLocalContinuumanaconda3python.exe
Do this:
C:UsersUser_nameAppDataLocalContinuumanaconda3
In Windows 10, you may find it here:
C:Users\[USER]AppDataLocalcondacondaenvs\[ENVIRONMENT]python.exe
or
C:ProgramDataAnaconda3
C:Users\Anaconda3
I just added above path , to my path environment variables and it worked.
Now, all we have to do is to move to the .py script location directory, open the cmd with that location and run to see the output.
You could also just re-install Anaconda, and tick the option add variable to Path.. This will prevent you from making mistakes when editing environment variables. If you make mistakes here, your operating system could start malfunctioning.
The default location for python.exe should be here: c:usersxxxanaconda3
One solution to find where it is, is to open the Anaconda Prompt then execute:
> where python
This will return the absolute path of locations of python eg:
(base) C:>where python
C:UsersChadAnaconda3python.exe
C:ProgramDataMiniconda2python.exe
C:devPython27python.exe
C:devPython34python.exe
To export the exact set of paths used by Anaconda, use the command echo %PATH% in Anaconda Prompt. This is needed to avoid problems with certain libraries such as SSL.
Reference: https://stackoverflow.com/a/54240362/663028
You can also run conda init as below,
C:ProgramDataAnaconda3Scriptsconda init cmd.exe
or
C:ProgramDataAnaconda3Scriptsconda init powershell
Note that the execution policy of powershell must be set, e.g. using Set-ExecutionPolicy Unrestricted.
Provide the Directory/Folder path where python.exe is available in Anaconda folder like
C:Usersuser_nameAnaconda3
This should must work.
I want to mention that in some win 10 systems, Microsoft pre-installed a python. Thus, in order to invoke the python installed in the anaconda, you should adjust the order of the environment variable to ensure that the anaconda has a higher priority.
Try path env var for the system (on Windows)
C: ...Anaconda3
C: ...Anaconda3scripts
C: ...Anaconda3Librarybin
Must solve! It worked for me.
What heled me to set that up:
I. Find your conda path
- Open ‘Anaconda prompt’ from start menu
- type ‘conda init’ to auto set up all. That should set everything up!
- if that does not work type ‘which/where conda’
II. Add your ‘path-tominiconda3Scriptsconda.exe’ folder in windows PATH variable
I am trying to run python from the windows command prompt (windows 10). So the result is the typical one when the path environment variable is not configured
c:windowssystem32>python
'python' is not recognized as an internal or external command, operable
program or batch file
however, I am not sure which is the right directory I should set up in the path variable.
I tried a few variations, and none of them work, including:
c:usersxxxanaconda3
c:usersxxxanaconda3Scripts
c:usersxxxanaconda3libspython34
and none of them works.
Does anyone have experience with this particular system constellation (windows, anaconda). Thanks.
it turns out I was mistaken.
Solution is: in anaconda (as well as in other implementations), set the path environment variable to the directory where ‘python.exe’ is installed.
As a default, the python.exe file in anaconda is in:
c:.....anaconda
after you do that, obviously, the python command works, in my case, yielding the following.
python
Python 3.4.3 |Anaconda 2.2.0. (64|bit)|(default, Nov 7 2015), etc, etc
C:Users<Username>AppDataLocalContinuumanaconda2
For me this was the default installation directory on Windows 7. Found it via Rusy’s answer
Instead of giving the path following way:
C:UsersUser_nameAppDataLocalContinuumanaconda3python.exe
Do this:
C:UsersUser_nameAppDataLocalContinuumanaconda3
In Windows 10, you may find it here:
C:Users\[USER]AppDataLocalcondacondaenvs\[ENVIRONMENT]python.exe
or
C:ProgramDataAnaconda3
C:Users\Anaconda3
I just added above path , to my path environment variables and it worked.
Now, all we have to do is to move to the .py script location directory, open the cmd with that location and run to see the output.
You could also just re-install Anaconda, and tick the option add variable to Path.. This will prevent you from making mistakes when editing environment variables. If you make mistakes here, your operating system could start malfunctioning.
The default location for python.exe should be here: c:usersxxxanaconda3
One solution to find where it is, is to open the Anaconda Prompt then execute:
> where python
This will return the absolute path of locations of python eg:
(base) C:>where python
C:UsersChadAnaconda3python.exe
C:ProgramDataMiniconda2python.exe
C:devPython27python.exe
C:devPython34python.exe
To export the exact set of paths used by Anaconda, use the command echo %PATH% in Anaconda Prompt. This is needed to avoid problems with certain libraries such as SSL.
Reference: https://stackoverflow.com/a/54240362/663028
You can also run conda init as below,
C:ProgramDataAnaconda3Scriptsconda init cmd.exe
or
C:ProgramDataAnaconda3Scriptsconda init powershell
Note that the execution policy of powershell must be set, e.g. using Set-ExecutionPolicy Unrestricted.
Provide the Directory/Folder path where python.exe is available in Anaconda folder like
C:Usersuser_nameAnaconda3
This should must work.
I want to mention that in some win 10 systems, Microsoft pre-installed a python. Thus, in order to invoke the python installed in the anaconda, you should adjust the order of the environment variable to ensure that the anaconda has a higher priority.
Try path env var for the system (on Windows)
C: ...Anaconda3
C: ...Anaconda3scripts
C: ...Anaconda3Librarybin
Must solve! It worked for me.
What heled me to set that up:
I. Find your conda path
- Open ‘Anaconda prompt’ from start menu
- type ‘conda init’ to auto set up all. That should set everything up!
- if that does not work type ‘which/where conda’
II. Add your ‘path-tominiconda3Scriptsconda.exe’ folder in windows PATH variable