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Fatal error in launcher: Unable to create process using '"' in python

Tags:

python

python-3.x

windows

python-2.7

I had python 2.7 before and then I installed python 3.4.The OS is windows 10

I have renamed 

C:\python27\python.exe to python2.exe (when I run python2 --version it shows correct version)

and 

C:\python34\python.exe to python3.exe (when I run python3 --version it shows correct version)

I have set the path variable manually and there is no space etc.

I was trying to create a virtual environment and assign python34 to this new environment. I was going through this SO reference -- Using VirtualEnv with multiple Python versions on windows

prompt>> virtualenv -p c:\Python34\python3.exe casenv

But I got an error--

Fatal error in launcher: Unable to create process using '"'

Do I need to install virtualenv again for python34 or somewhere I need to set virtualenv path for each python installation.

Any help is highly welcomed.

like image 419
Prithviraj Mitra Avatar asked Aug 05 '17 00:08

Prithviraj Mitra

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1 Answers

In my case, i had installed python 3.6 and uninstalled python 2.7 when i got this error. Completely deleting the C:\Python2.7 directory did the trick.

like image 81
Sergiu Ionescu Avatar answered Sep 25 '22 16:09

Sergiu Ionescu
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