Find where python is installed (if it isn't default dir)

Question

Python is on my machine, I just don't know where, if I type python in terminal it will open Python 2.6.4, this isn't in it's default directory, there surely is a way of finding it's install location from here?

I just found mine in C:\Users\\AppData\Local\Programs\Python\Python36 — relipse, Jul 22 '16 at 15:51

Ned Batchelder · Answer 1 · 2014-10-16T12:27:17.567

218

sys has some useful stuff:

$ python
Python 2.6.6 (r266:84297, Aug 24 2010, 18:13:38) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.executable
'c:\\Python26\\python.exe'
>>> sys.exec_prefix
'c:\\Python26'
>>>
>>> print '\n'.join(sys.path)

c:\Python26\lib\site-packages\setuptools-0.6c11-py2.6.egg
c:\Python26\lib\site-packages\nose-1.0.0-py2.6.egg
C:\Windows\system32\python26.zip
c:\Python26\DLLs
c:\Python26\lib
c:\Python26\lib\plat-win
c:\Python26\lib\lib-tk
c:\Python26
c:\Python26\lib\site-packages
c:\Python26\lib\site-packages\win32
c:\Python26\lib\site-packages\win32\lib
c:\Python26\lib\site-packages\Pythonwin
c:\Python26\lib\site-packages\wx-2.8-msw-unicode

edited Oct 16 '14 at 12:27

answered Jul 20 '11 at 19:24

Ned Batchelder

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When I type `sys` in Python it says it is not defined... what is going on there? Thanks. – Spacey Oct 15 '14 at 21:32
2

@Learnaholic - You need to `import sys` first. – Tony Oct 16 '14 at 10:10
13

Pythonic! This is an OS agnostic answer and doesn't require access to command line. This worked well for me since I only have access to the Python Interpreter. – Robino Jan 08 '16 at 09:29
6

Please accept this answer as it is multi-platform and doesn't need access to the shell/cmd! – Hack5 Apr 20 '17 at 13:33
This also works better when you have multiple pythons installations and access them through py -2 or py -3 for example, since 'which python' will probably display only one – GuiFGDeo Jul 02 '18 at 16:49

score 168 · Accepted Answer · edited Aug 13 '19 at 05:53

168

In unix (mac os X included) terminal you can do

which python

and it will tell you.

edited Aug 13 '19 at 05:53

Vega

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answered Jul 20 '11 at 19:21

dhg

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@Ned check out http://stackoverflow.com/questions/304319/is-there-an-equivalent-of-which-on-windows – Foo Bah Jul 21 '11 at 04:06
@Foo Bah: yes, thanks. Did you see mine was the accepted answer there? :) – Ned Batchelder Jul 21 '11 at 14:53
@Ned no offense but I had actually intended to point to the answer that had the most upvotes (it used CMD primitives :) – Foo Bah Jul 21 '11 at 16:11
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-1: Definitely not the best answer here. There are both single line and multiline solutions that work on every answer. – ArtOfWarfare Aug 24 '13 at 21:00
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This is also not the best answer because many, many more times often than not, your `python` executable is a symlink. `which python` will, in all probability just point to `/usr/bin` or `/usr/local/bin`, which really isn't helpful. – Jay Sep 02 '15 at 14:56
An alternative to looking for Windows equivalents to these commands is to install a bash shell on Windows. The "which python" command works when run in Git Bash on Windows. – Asencion Feb 28 '19 at 20:13
"which python" works for me on Windows in Bash but not a command prompt. "where python" works in a command prompt. – Micah B. Oct 02 '19 at 20:47
is there any command or method of module to find from python file where the python interpretor is? – Mahdi-Jafaree Jun 23 '20 at 09:01

score 116 · Answer 3 · edited Aug 24 '17 at 10:20

116

Platform independent solution in one line is

Python 2:

python -c "import sys; print sys.executable"

Python 3:

python -c "import sys; print(sys.executable)"

edited Aug 24 '17 at 10:20

FistOfFury

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answered Jul 20 '11 at 20:01

schlamar

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Worked great on windows! If you're on python 3 you'll have to change it to `print(sys.executable)` – Crazometer May 19 '16 at 04:55
the python 3 version should work on python 2 regardless, as the parentheses are just treated as a token – micsthepick Mar 21 '20 at 00:09

score 36 · Answer 4 · edited May 17 '17 at 12:13

36

On windows running where python should work.

edited May 17 '17 at 12:13

Eric Aya

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answered May 17 '17 at 09:34

SitiSchu

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This one is really nice – informatik01 Sep 09 '19 at 20:36
doesn't work in PowerShell for some reason – Ebrahim Karam May 21 '21 at 21:19

score 27 · Answer 5 · answered Jul 20 '11 at 19:25

27

Have a look at sys.path:

>>> import sys
>>> print(sys.path)

answered Jul 20 '11 at 19:25

MRAB

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this one should be the recc approach on windows – Vitaliy Terziev Jul 21 '17 at 20:05

score 15 · Answer 6 · answered Jul 20 '11 at 19:23

15

You should be able to type "which python" and it will print out a path to python.

or you can type:

python
>>> import re
>>> re.__file__

and it will print a path to the re module and you'll see where python is that way.

answered Jul 20 '11 at 19:23

tiny_mouse

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What if they don't have the re module. – Jakob Bowyer Jul 20 '11 at 19:27
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How do you get a Python interpreter without re? :) – Ned Batchelder Jul 20 '11 at 19:28
Build your own, I know I have in the past. – Jakob Bowyer Jul 20 '11 at 19:37
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And forgot where you put it, did you? ;-) – Steven Jul 20 '11 at 20:01
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This is how I know that /System/Library/Frameworks/Python.framework/Versions/2.5/lib/ is the same directory as /usr/bin? – Wooble Jul 20 '11 at 20:02
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If you don't have the `re` module, then try it with a module that you **do** have. Anything you're expecting to be in the `lib` subdirectory should work, such as `os` (which is pretty essential). – Karl Knechtel Jul 20 '11 at 21:50
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@Karl Yup. I just picked something that came standard and assumed anyone reading it would be able to figure out you could substitute any standard module. My mistake. ;) – tiny_mouse Jul 21 '11 at 07:15

score 10 · Answer 7 · answered Dec 02 '15 at 15:35

10

To find all the installations of Python on Windows run this at the command prompt:

dir site.py /s

Make sure you are in the root drive. You will see something like this.

answered Dec 02 '15 at 15:35

Webucator

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score 7 · Answer 8 · answered Apr 25 '20 at 08:23

7

If you are using wiindows OS (I am using windows 10 ) just type

where python

in command prompt ( cmd )

It will show you the directory where you have installed .

answered Apr 25 '20 at 08:23

Badri Paudel

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score 2 · Answer 9 · answered Mar 18 '20 at 07:24

First search for PYTHON IDLE from search bar
Open the IDLE and use below commands.

import sys print(sys.path)
It will give you the path where the python.exe is installed. For eg: C:\Users\\...\python.exe
Add the same path to system environment variable.

score 1 · Answer 10 · answered Oct 24 '17 at 20:06

1

For Windows Users:

If the python command is not in your $PATH environment var.

Open PowerShell and run these commands to find the folder

cd \
ls *ython* -Recurse -Directory

That should tell you where python is installed

answered Oct 24 '17 at 20:06

Kolob Canyon

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Windows only and on top of that requires PS. – misantroop Nov 10 '18 at 10:16
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@misantroop I dare you to find an instance of windows without powershell; unless you're running Windows Server 2003, it will have powershell – Kolob Canyon Nov 18 '18 at 07:38
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Not natively on XP and all of the versions derived from it. Installing software to determine where Python is located seems overkill. – misantroop Nov 18 '18 at 08:00
@misantroop yes. XP is a version derived from Windows Server 2003. You will be lucky to find a Windows machine that doesn't have powershell. – Kolob Canyon Nov 19 '18 at 16:06
Thanks @KolobCanyon - this is helpful – zip_lock_throw Feb 12 '19 at 04:32

score 1 · Answer 11 · answered Aug 13 '19 at 05:14

1

On windows search python,then right click and click on "Open file location".That's how I did

answered Aug 13 '19 at 05:14

Find where python is installed (if it isn't default dir)

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