Build process The project is structured like a normal Python package with a standard setup. But there is still the following error: from keras. So, now we've got the latest pip version 6. Anyway, I'll leave the rest of this post here for posterity - the note about caching the pip and wheel packages using older pip versions may still be useful to some. First, we set up some environment variables, so that you don't have to supply the wheel-cache directory on the command-line every time default is current working directory, which is not what you want for sharing e. It runs and runs without any result. Some of the links contained within this site have my referral id, which provides me with a small commission for each sale.
This can result in mild disbelief when numpy installs near-instantly the second time around, with no configuration! This is kept as the import name to be consistent with different kind of tutorials around the internet. Importing the multiarray numpy extension module failed. Manylinux wheels Linux wheels are built using. Have a nice day today. They maintain a variety of tools, documentation, and issue trackers on both and. This is awesome - it makes virtualenvs feel much more lightweight no waiting five-to-ten minutes to spin one up with numpy, scipy, and astropy , It's also a massive boon if you're running automated install testing with , since this may run a fresh install for each test-run.
Optionally, you can customize the install location. ModuleNotFoundError Traceback most recent call last ModuleNotFoundError: No module named 'numpy. There's also a nice of the wheel format by Armin Ronacher of flask fame , but although I came across and skim-read the article some months ago, I but never got around to actually trying it out till now. However, I was trying to get tensorboard up running with the following ImportError, not exactly the same, but maybe related: ModuleNotFoundError: No module named 'numpy. A: It's easier for users to understand opencv-python than cv2 and it makes it easier to find the package with search engines.
A lightweight alternative is to download the Python installer from and the NumPy installer for your Python version from the Sourceforge. Todo and open questions: ------------------------ - There may be further generalizations that could be built on top of these abstractions. You may install virtualenv to provide such environments using either pip pip install virtualenv or through your system package manager commonly called virtualenv or python-virtualenv. I expected to be able to run: pip install --user --upgrade pip to get the latest version of pip whenever I was logged in, but this doesn't seem to work, so unless you're going to do a system-wide sudo upgrade you still need to upgrade pip for each new virtualenv you create. In any event though, I would say that up to date libraries aren't essential for new programmers barring you're not using some library as old as your grandfather as the fundamentals of programming seem to be agnostic of versions. .
Q: Pip fails with Could not find a version that satisfies the requirement. Documentation for opencv-python The aim of this repository is to provide means to package each new for the most used Python versions and platforms. If you still encounter the error after you have checked all the previous solutions, download and open the cv2. Python must also be compiled with the zlib module enabled. Installing into this Python installation requires root access to the system, and may interfere with the operation of the system package manager and other components of the system if a component is unexpectedly upgraded using pip. Head over to and download the installer. Old Anaconda versions have a bug which causes the error, see for a manual fix.
Alternatively, on Windows 10, use the bottom left search box to search for cmd. Installing binary extensions Python has typically relied heavily on source based distribution, with end users being expected to compile extension modules from source as part of the installation process. However, I was trying to get tensorboard up running with the following ImportError, not exactly the same, but maybe related: ModuleNotFoundError: No module named 'numpy. Some of the solutions for installing that are not yet available as pre-built wheel files may also help with obtaining other binary extensions without needing to build them locally. Write python in the command window and press Enter, you should see something like this: Exit from the Python interpreter by writing quit and pressing the Enter key.
I would suggest using apt for as much package management as you can, and if you find you need some obscure python lib apt doesn't supply, either use pip or I would install from source, but to each his own. Hat-tip to for pulling this information into one easy-to-read , which I found when infuriated by build-times. The default Python Windows installer is 32 bits and this is what I will use in this article. If you are using older Windows version than Windows 10 and latest system updates are not installed, might be also required. If you need the 64 bits version of Python, check the Looking for a specific release? Edit, July 2015: A mere two weeks after I posted this, pip version 7 was released and changed things again. It runs and runs without any result. This information will never be disclosed to any third party for any purpose.
I have been consulting this question on what package manager to use for Python and seem to suggest that I not use pip to manage the packages on a global level. If both are dependencies, this means both have been used, which is almost always a very bad idea. You can find usage details here: but I'll give you the basics below. Download files Download the file for your platform. Accelerates numpy's linear algebra, Fourier transform, and random number generation capabilities, as well as select universal functions. There is no plugin architecture: all the packages use the same namespace cv2. There is no rule saying you can't use both apt and pip in conjunction you just run a much higher risk of running into 1.
If you have the wheel library and pip version 7 or above, wheel building and caching is now switched on and run by default, you just need to pip install away and the caching happens in the background. But there is still the following error: from keras. Okay, sorry guy's I solved the problem. Most users will probably prefer the lastest stable version. Importing the multiarray numpy extension module failed. Please include details on: - how you installed Python - how you installed numpy - your operating system - whether or not you have multiple versions of Python installed - if you built from source, your compiler versions and ideally a build log Note: this error has many possible causes, so please don't comment on an existing issue about this - open a new one instead.