python - How to ensure that Spyder runs within a conda environment? -

i created conda environment called testenv in windows 10 contains python 3.6 , spyder. installed selenium using method described in this answer. checked these packages installed with

conda list -n testenv 

to run spyder in environment followed instructions in this answer , related comments. activated environment with

activate testenv 

which modified prompt indicate testenv active. typed

spyder 

to launch spyder. (when spyder opens, command window automatically closes, , if open 1 without closing spyder, , issue command conda info -e, output indicates testenv no longer active.) @ point, when run code within spyder contains line

from selenium import webdriver 

the spyder console reports

modulenotfounderror: no module named 'selenium' 

my questions are:

is spyder running in testenv? if so, why error being reported? if not, doing wrong?

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edit: further research turned aptly-named thread "spyder not run in anaconda virtual environment on windows 10". followed suggestion, in accepted answer, of installing spyder after activating environment, returned message

# requested packages installed. # packages in environment @ c:\anaconda3\envs\testenv: # spyder                    3.2.2                    py36_0 

one of answer's comments suggests using where spyder within active environment check executables available. returned

c:\anaconda3\scripts\spyder.exe c:\anaconda3\envs\testenv\scripts\spyder.exe 

so tried starting spyder typing full path of second entry. spyder opened, , program ran without errors. this seems have solved problem.

i issued command where spyder within active environment check locations of spyder's executables. returned

c:\anaconda3\scripts\spyder.exe c:\anaconda3\envs\testenv\scripts\spyder.exe 

so started spyder typing full path of second entry, , program ran without errors.