Where is python installed on windows

asked Mar 15, 2009 at 9:09

In your Python interpreter, type the following commands:

>>> import os
>>> import sys
>>> os.path.dirname(sys.executable)
'C:\\Python25'

Also, you can club all these and use a single line command. Open cmd and enter following command

python -c "import os, sys; print(os.path.dirname(sys.executable))"

If you have Python in your environment variable then you can use the following command in cmd or powershell:

 where python

or for Unix enviroment

 which python

command line image :

answered Apr 17, 2017 at 16:04

It would be either of

• C:\Python36
• C:\Users\(Your logged in User)\AppData\Local\Programs\Python\Python36

answered Aug 18, 2017 at 9:52

If you need to know the installed path under Windows without starting the python interpreter, have a look in the Windows registry.

Each installed Python version will have a registry key in either:

• HKLM\SOFTWARE\Python\PythonCore\versionnumber\InstallPath
• HKCU\SOFTWARE\Python\PythonCore\versionnumber\InstallPath

In 64-bit Windows, it will be under the Wow6432Node key:

• HKLM\SOFTWARE\Wow6432Node\Python\PythonCore\versionnumber\InstallPath

Simple way is

1. open CMD
2. type where python in cmd

If you have the py command installed, which you likely do, then just use the --list-paths/-0p argument to the command:

py --list-paths

Example output:

Installed Pythons found by py Launcher for Windows
-3.8-32 C:\Users\cscott\AppData\Local\Programs\Python\Python38-32\python.exe *
-2.7-64 C:\Python27\python.exe

The * indicates the currently active version for scripts executed using the py command.

answered Dec 9, 2019 at 20:48

On my windows installation, I get these results:

>>> import sys
>>> sys.executable
'C:\\Python26\\python.exe'
>>> sys.platform
'win32'
>>>

(You can also look in sys.path for reasonable locations.)

answered Mar 15, 2009 at 10:18

In the sys package, you can find a lot of useful information about your installation:

import sys
print sys.executable
print sys.exec_prefix

I’m not sure what this will give on your Windows system, but on my Mac executable points to the Python binary and exec_prefix to the installation root.

You could also try this for inspecting your sys module:

import sys
for k,v in sys.__dict__.items():
    if not callable(v):
        print "%20s: %s" % (k,repr(v))

answered Mar 15, 2009 at 9:41

If You want the Path After successful installation then first open you CMD and type
python or python -i

It Will Open interactive shell for You and Then type

import sys

sys.executable

Hit enter and you will get path where your python is installed …

Amit GuptaAmit Gupta

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You can find it in the Windows GUI, but you need to select “show hidden” in the menu. Directory where python is installed on my Win10 computer:

C:\Users\username\AppData\Local\Programs\Python\Python310

Very handy if you use python pip to install packages.

If anyone needs to do this in C# I’m using the following code:

static string GetPythonExecutablePath(int major = 3)
{
    var software = "SOFTWARE";
    var key = Registry.CurrentUser.OpenSubKey(software);
    if (key == null)
        key = Registry.LocalMachine.OpenSubKey(software);
    if (key == null)
        return null;

    var pythonCoreKey = key.OpenSubKey(@"Python\PythonCore");
    if (pythonCoreKey == null)
        pythonCoreKey = key.OpenSubKey(@"Wow6432Node\Python\PythonCore");
    if (pythonCoreKey == null)
        return null;

    var pythonVersionRegex = new Regex("^" + major + @"\.(\d+)-(\d+)$");
    var targetVersion = pythonCoreKey.GetSubKeyNames().
                                        Select(n => pythonVersionRegex.Match(n)).
                                        Where(m => m.Success).
                                        OrderByDescending(m => int.Parse(m.Groups[1].Value)).
                                        ThenByDescending(m => int.Parse(m.Groups[2].Value)).
                                        Select(m => m.Groups[0].Value).First();

    var installPathKey = pythonCoreKey.OpenSubKey(targetVersion + @"\InstallPath");
    if (installPathKey == null)
        return null;

    return (string)installPathKey.GetValue("ExecutablePath");
}

answered Apr 5, 2017 at 11:10

answered Jul 16, 2018 at 6:55

answered Jun 2, 2018 at 16:48

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