How can I upgrade NumPy

Question

When I installed OpenCV using Homebrew  brew   I got this problem whenever I run this command to test python -c  import cv2    RuntimeError  module compiled against API version 9 but this version of numpy is 6 Traceback  most recent call last     File   lt string gt    line 1  in  lt module gt  ImportError  numpy core multiarray failed to import   I tried to upgrade NumPy  but this is confusing    gt  gt  gt  import numpy  gt  gt  gt  print numpy   version   1 6 1   When I run brew to upgrade NumPy  I got this problem   brew install -u numpy Warning  numpy-1 9 1 already installed   When I uninstalled it   sudo pip install numpy Requirement already satisfied  use --upgrade to upgrade   numpy in   anaconda lib python2 7 site-packages   I have followed this question and deleted Anaconda from my mac   pip install numpy Requirement already satisfied  use --upgrade to upgrade   numpy in  Library Python 2 7 site-packages   But nothing have changed  How can I link the NumPy version to OpenCV

User · Answer

When you already have an older version of NumPy  use this   pip install numpy --upgrade   If it still doesn t work  try   pip install numpy --upgrade --ignore-installed

User · Answer

If you are stuck with a machine where you don t have root access  then it is better to deal with a custom Python installation   The Anaconda installation worked like a charm    Installing packages  SciPy org  Anaconda Python R Distribution - download   After installation       bash     xxx devTools python anaconda bin pip list --format columns     grep numpy      numpy                              1 13 3                     numpydoc   0 7 0

User · Answer

This  works for me   pip install numpy --upgrade

User · Answer

Update numpy  For python 2  pip install numpy --upgrade   You would also needed to upgrade your tables as well for updated version of numpy  so   pip install tables --upgrade   For python 3  pip3 install numpy --upgrade   Similarly  the tables for python3  -  pip3 install tables --upgrade   note   You need to check which python version are you using  pip for python 2 7  or pip3 for python 3

User · Answer

Because you have multiple versions of NumPy installed   Try pip uninstall numpy and pip list   grep numpy several times  until you see no output from pip list   grep numpy   Then pip install numpy will get you the newest version of NumPy

User · Answer

Because we have two NumPy installations in the system  One is installed by Homebrew and the second is installed by pip  So in order to solve the problem  we need to delete one and use the default NumPy install by OpenCV   Check the path   import numpy print numpy   path     and manually delete it using rm

User · Answer

FYI  when you using or importing TensorFlow  a similar error may occur  like  caused by NumPy    RuntimeError  module compiled against API version 0xa but this version of numpy is 0x9 Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt    File   usr local lib python2 7 dist-packages tensorflow   init   py   line 23  in  lt module gt      from tensorflow python import     File   usr local lib python2 7 dist-packages tensorflow python   init   py   line 60  in  lt module gt      raise ImportError msg  ImportError  Traceback  most recent call last     File   usr local lib python2 7 dist-packages tensorflow python   init   py   line 49  in  lt module gt      from tensorflow python import pywrap tensorflow   File   usr local lib python2 7 dist-packages tensorflow python pywrap tensorflow py   line 28  in  lt module gt       pywrap tensorflow   swig import helper     File   usr local lib python2 7 dist-packages tensorflow python pywrap tensorflow py   line 24  in swig import helper      mod   imp load module   pywrap tensorflow   fp  pathname  description  ImportError  numpy core multiarray failed to import   Error importing tensorflow   Unless you are using bazel  you should not try to import tensorflow from its source directory  please exit the tensorflow source tree  and relaunch your python interpreter from there    I followed Elmira s and Drew s solution  sudo easy install numpy  and it worked   sudo easy install numpy Searching for numpy Best match  numpy 1 11 3 Removing numpy 1 8 2 from easy-install pth file Adding numpy 1 11 3 to easy-install pth file  Using  usr local lib python2 7 dist-packages Processing dependencies for numpy Finished processing dependencies for numpy   After that I could use TensorFlow without error

User · Answer

The error you mentioned happens when you have two versions of NumPy on your system  As you mentioned  the version of NumPy you imported is still not upgraded since you tried to upgrade it through pip  it will upgrade the version existing in   Library Python 2 7 site-packages      However Python still loads the packages from    System Library Frameworks Python framework Versions 2 7 Extras lib python numpy  where the pre-installed packages live   In order to upgrade that version you have to use easy install  The other way around this problem is using virtualenv and setting up a new environment with all the requirements you need

User · Answer

If you don t encounter any permission errors with  pip install -U numpy   try   pip install --user -U numpy

User · Answer

After installing pytorch  I got a similar error when I used   import torch   Removing NumPy didn t help  I actually renamed NumPy  so I reverted back after it didn t work   The following commands worked for me   sudo pip install numpy --upgrade sudo easy install numpy

User · Answer

All the same      sudo easy install numpy   My Traceback  Searching for numpy  Best match  numpy 1 13 0  Adding numpy 1 13 0 to easy-install pth file  Using  Library Python 2 7 site-packages  Processing dependencies for numpy

User · Answer

I tried doing sudo pip uninstall numpy instead  because the rm didn t work at first   Hopefully that helps   Uninstalling then to install it again

[python] How can I upgrade NumPy?

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