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I installed Python 3.5.2 64 bit version on my Windows. I had already Python 3.6.4 32-bit version. I needed 64 bit one because I want to use Tensorflow which requires 64-bit version.

However, after installation I can not import libraries on Python 3.5.2. When I try pip3 install command it says "requirement already satisfied" but when it comes to importing it says "no module named".

I want to import all necessary libraries on 3.5.2 just like my original 3.6.4 version but I can not do it. Any support would be really appreciated. Here is an image showing the error.

No module named "numpy" :

No module named "numpy"

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  • try deleting the old version of python Commented Jun 10, 2018 at 10:33
  • check which version of pip you have installed and pointing for pip3 ls -l which pip3 Commented Jun 10, 2018 at 11:45
  • I don't want to delete the old one since it has many libraries already, so it will be my last choice if I could not find any other solution. I guess "which pip3" command is not working on Windows. Commented Jun 10, 2018 at 13:17

2 Answers 2

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When you type pip3 install ..., it most likely refers to the pip of your 3.6 installation. When you installed the 3.5 version, you most likely got a pip3.5 executable (I don't know the exact name in Windows, maybe pip35), you should use this one for installing packages for your Python 3.5.

On Linux, that's what happens anyways.

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It is indeed pip of 3.6. I have pip3.5 executable but when I try to enter "pip3.5 install numpy" for example it says " Fatal error in launcher: Unable to create process using '"' " . I need another way to make use of pip3.5 I guess. Somehow it is always directing python 3.6 when I use pip3.
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Apparently, specifying the Python version before -m pip install package_name is a solution for this problem.

For example:

python3.5 -m pip install numpy

I just need not to use pip3 since it somehow belongs to the Python 3.6.4 ( older one ). With that I can import numpy without a problem.

Very appreciated for your helps.

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