powershell - Failed activate for python3 with Anaconda on Windows 8.1 -


i'd have both anaconda python v2 , python v3 environment. i've run both anaconda installers, working in microsoft's powershell. create python3 env run:

ps c:\users\jo> conda create -n py3 python=3.4 fetching package metadata: .... solving package specifications: . package plan installation in environment c:\anaconda\envs\py3:  following new packages installed:      pip:        6.1.1-py34_0     python:     3.4.3-0     setuptools: 15.2-py34_0  proceed ([y]/n)? y  linking packages ... [      complete      ]|##################################################| 100% # # activate environment, use: # > activate py3 #

however activating env ignores new env:

ps c:\users\jo> activate py3 activating environment "py3"... ps c:\users\jo> python python 2.7.9 |anaconda 2.2.0 (64-bit)| (default, dec 18 2014, 16:57:52)  [msc v.1500 64 bit (amd64)] on win32 type "help", "copyright", "credits" or "license" more information. anaconda brought continuum analytics. please check out: http://continuum.io/thanks , https://binstar.org >>>

.. see looking @ current in list of installed envs:

ps c:\users\jo> conda env list # conda environments: # py3                      c:\anaconda\envs\py3 root                  *  c:\anaconda

when sanity reigns, activate command performs switch modifying path variable. there else need in environment work?

if run cmd.exe shell script powershell (a batch file), powershell spawns instance of cmd.exe run script. if batch file sets environment variables, exist in spawned cmd.exe instance. once instance terminates (i.e., when script ends), environment variables not propagate calling process (powershell, in case). design.

if want propagate environment variables, can use following invoke-cmdscript function in powershell:

function invoke-cmdscript {   param(     [string] $scriptname   )   $cmdline = """$scriptname"" $args & set"   & $env:systemroot\system32\cmd.exe /c $cmdline |   select-string '^([^=]*)=(.*)$' | foreach-object {     $varname = $_.matches[0].groups[1].value     $varvalue = $_.matches[0].groups[2].value     set-item env:$varname $varvalue   } }

some more information in following article:

windows pro: take charge of environment variables in powershell


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