Hi all, I have a puzzle for you today. I am trying to get the ArcGIS Pro install folder from Python. I am open to suggestions on how to accomplish this task, but the following approach should work (and works for me with Desktop, although I usually use os.environ["AGSDESKTOPJAVA"] instead). * I don't want to use arcpy.GetInstallInfo() because I want to find out where the install is before I take the time to import arcpy. * We install in a non-standard location to avoid spaces in the path. Here is my attempt: D : \Users\jwpowell > C : \Python27\ArcGIS10 .4 \python . exe Python 2.7 . 10 ( default , May 23 2015 , 09 : 40 : 32 ) [ MSC v .1500 32 bit ( Intel ) ] on win32 Type "help" , "copyright" , "credits" or "license" for more information . >> > import _winreg >> > with _winreg . OpenKey ( _winreg . HKEY_LOCAL_MACHINE , . . . r "SOFTWARE\ESRI\ArcGISPro" ) as key : . . . pro_path = _winreg . QueryValueEx ( key , "InstallDir" ) [ 0 ] . . . Traceback ( most recent call last ) : File " " , line 2 , in module > WindowsError : [ Error 2 ] The system cannot find the file specified And yet, I can see this key with reg query fine: D:\Users\jwpowell>reg query HKLM\SOFTWARE\ESRI\ArcGISPro /v InstallDir HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\ArcGISPro InstallDir REG_SZ C:\ArcGIS\Pro\ See, it works in Desktop. >> > with _winreg . OpenKey ( _winreg . HKEY_LOCAL_MACHINE , . . . r "SOFTWARE\WOW6432Node\ESRI\ArcGIS" ) as key : . . . dt_path = _winreg . QueryValueEx ( key , "InstallDir" ) [ 0 ] . . . >> > dt_path u 'C:\\Program Files (x86)\\Common Files\\ArcGIS\\' Is this a x64/x32 thing?

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Get Pro install folder location from Python

curtvprice

Hi all, I have a puzzle for you today. I am trying to get the ArcGIS Pro install folder from Python. I am open to suggestions on how to accomplish this task, but the following approach should work (and works for me with Desktop, although I usually use os.environ["AGSDESKTOPJAVA"] instead).

I don't want to use arcpy.GetInstallInfo() because I want to find out where the install is before I take the time to import arcpy.
We install in a non-standard location to avoid spaces in the path.

Here is my attempt:

D<SPAN class="punctuation token">:</SPAN>\Users\jwpowell<SPAN class="operator token">></SPAN>C<SPAN class="punctuation token">:</SPAN>\Python27\ArcGIS10<SPAN class="number token">.4</SPAN>\python<SPAN class="punctuation token">.</SPAN>exe
Python <SPAN class="number token">2.7</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="number token">10</SPAN> <SPAN class="punctuation token">(</SPAN>default<SPAN class="punctuation token">,</SPAN> May <SPAN class="number token">23</SPAN> <SPAN class="number token">2015</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">09</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">40</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">32</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">[</SPAN>MSC v<SPAN class="number token">.1500</SPAN> <SPAN class="number token">32</SPAN> bit <SPAN class="punctuation token">(</SPAN>Intel<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">]</SPAN> on win32
Type <SPAN class="string token">"help"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"copyright"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"credits"</SPAN> <SPAN class="operator token">or</SPAN> <SPAN class="string token">"license"</SPAN> <SPAN class="keyword token">for</SPAN> more information<SPAN class="punctuation token">.</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="keyword token">import</SPAN> _winreg
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="keyword token">with</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>OpenKey<SPAN class="punctuation token">(</SPAN>_winreg<SPAN class="punctuation token">.</SPAN>HKEY_LOCAL_MACHINE<SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; r<SPAN class="string token">"SOFTWARE\ESRI\ArcGISPro"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> key<SPAN class="punctuation token">:</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp; pro_path <SPAN class="operator token">=</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>QueryValueEx<SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"InstallDir"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>
Traceback <SPAN class="punctuation token">(</SPAN>most recent call last<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
 File <SPAN class="string token">"<stdin>"</SPAN><SPAN class="punctuation token">,</SPAN> line <SPAN class="number token">2</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">in</SPAN> <SPAN class="operator token"><</SPAN>module<SPAN class="operator token">></SPAN>
WindowsError<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN>Error <SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN> The system cannot find the file specified‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

And yet, I can see this key with reg query fine:

D:\Users\jwpowell>reg query HKLM\SOFTWARE\ESRI\ArcGISPro /v InstallDir

HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\ArcGISPro
 InstallDir REG_SZ C:\ArcGIS\Pro\‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

See, it works in Desktop.

<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="keyword token">with</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>OpenKey<SPAN class="punctuation token">(</SPAN>_winreg<SPAN class="punctuation token">.</SPAN>HKEY_LOCAL_MACHINE<SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; r<SPAN class="string token">"SOFTWARE\WOW6432Node\ESRI\ArcGIS"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> key<SPAN class="punctuation token">:</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp; dt_path <SPAN class="operator token">=</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>QueryValueEx<SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"InstallDir"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> dt_path
u<SPAN class="string token">'C:\\Program Files (x86)\\Common Files\\ArcGIS\\'</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Is this a x64/x32 thing?

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Accepted answers

bixb0012

If I run your code, or equivalent code, from Pro Python installation; it works fine. I think the issue is that you are using a 32-bit Python interpreter to access the 64-bit space in the registry. The following should point you in the right direction: Change 64bit Registry from 32bit Python - Stack Overflow

All comments

curtvprice

Read the fine manual, right Joshua?

35.3. _winreg — Windows registry access — Python 2.7.13 documentation

Accessing an Alternate Registry View (Windows)

<SPAN class="keyword token">import</SPAN> _winreg
<SPAN class="keyword token">with</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>OpenKey<SPAN class="punctuation token">(</SPAN>_winreg<SPAN class="punctuation token">.</SPAN>HKEY_LOCAL_MACHINE<SPAN class="punctuation token">,</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; r<SPAN class="string token">"SOFTWARE\ESRI\ArcGISPro"</SPAN><SPAN class="punctuation token">,</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; _winreg<SPAN class="punctuation token">.</SPAN>KEY_READ <SPAN class="operator token">|</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>KEY_WOW64_64KEY
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> key<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; pro_path <SPAN class="operator token">=</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>QueryValueEx<SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"InstallDir"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>

<SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>pro_path<SPAN class="punctuation token">)</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

This prints:

C:\ArcGIS\Pro\

Here's a little esoterica about these flags used in line 5. These are integer flags, combined above with "|" which does a bitwise or operation. (Adding the integers would work just as well.) The idea of the integer flags is they allow the developers to cram multiple boolean flags in one integer value since the bit locations are set up to be different for each flag. This makes more sense when you look at the numbers in hex. Imagine a function that has many flags to control what it does. This technique allows you to cram as many as 32 values into a single 32-bit integer, simplifying your argument call dramatically.

I needed both of these flags to get my function to work: KEY_WOW_64KEY forces a 64-bit 'view' of the registry so my 32-bit app can read 64-bit keys, and KEY_READ makes sure I open the registry read-only (this avoid access errors).

<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> flags <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>_winreg<SPAN class="punctuation token">.</SPAN>KEY_READ<SPAN class="punctuation token">,</SPAN> _winreg<SPAN class="punctuation token">.</SPAN>KEY_WOW64_64KEY<SPAN class="punctuation token">]</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> flags<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>flags<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">|</SPAN> flags<SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="comment token"># bitwise OR</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> flags
<SPAN class="punctuation token">[</SPAN><SPAN class="number token">131097</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">256</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">131353</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="string token">"0x{:08x}"</SPAN><SPAN class="punctuation token">.</SPAN>format<SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> f <SPAN class="keyword token">in</SPAN> flags<SPAN class="punctuation token">]</SPAN> <SPAN class="comment token"># print in hex</SPAN>
<SPAN class="punctuation token">[</SPAN><SPAN class="string token">'0x00020019'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'0x00000100'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'0x00020119'</SPAN><SPAN class="punctuation token">]</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

DanPatterson_Retired

Here is another cool one from the depths of esri's own code

<SPAN class="keyword token">import</SPAN> os
<SPAN class="keyword token">import</SPAN> sys
d <SPAN class="operator token">=</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>abspath<SPAN class="punctuation token">(</SPAN>os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>sys<SPAN class="punctuation token">.</SPAN>prefix<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'..'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'..'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'..'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="comment token">#</SPAN>
<SPAN class="comment token"># Which returns .... 'C:\\ArcPro\\bin' .... where I installed my ArcGIS PRO</SPAN>
‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

but again, that has to be done with an IDE controlled by the conda distribution (Spyder in my case)

And from ...Jupyter QtConsole... so at least two IDEs bundled by esri for working with ArcGIS Pro can find it, as would be expected

Now if you are using python 3, _winreg is now winreg and this also works for my installation

<SPAN class="keyword token">import</SPAN> winreg

<SPAN class="keyword token">with</SPAN> winreg<SPAN class="punctuation token">.</SPAN>OpenKey<SPAN class="punctuation token">(</SPAN>winreg<SPAN class="punctuation token">.</SPAN>HKEY_LOCAL_MACHINE<SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; r<SPAN class="string token">"SOFTWARE\ESRI\ArcGISPro"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> key<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; pro_path <SPAN class="operator token">=</SPAN> winreg<SPAN class="punctuation token">.</SPAN>QueryValueEx<SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"InstallDir"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 

pro_path
Out<SPAN class="punctuation token">[</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'C:\\ArcPro\\'</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

GünterDörffel

Support for Joshua - and there's others who had that issue with 32bit: Python winreg looping through sub-keys - Stack Overflow

bixb0012

DanPatterson_Retired

you can cheat... a demo using spyder as the python ide

<SPAN class="keyword token">import</SPAN> sys
src <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>i <SPAN class="keyword token">for</SPAN> i <SPAN class="keyword token">in</SPAN> sys<SPAN class="punctuation token">.</SPAN>path <SPAN class="keyword token">if</SPAN> <SPAN class="string token">'spyder'</SPAN> <SPAN class="keyword token">in</SPAN> i<SPAN class="punctuation token">]</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Then it gives you the source for Pro since the distribution of spyder is buried within... do the split, join thing or just read it. Works with any ide installed within your conda distribution (ie pythonwin, if installed that way)

Too lazy to figure out registry stuff. But you probably don't have the luxury of local installs I bet

bharold

D'oh just saw you don't want to use arcpy.GetInstallInfo()['InstallDir']

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