It is currently our preferred method of installing Python 3.3 and PyQt 4.9.4 as it allows us to work with cxFreeze, which we use to create stand-alone applications. MacPorts is a package manager for Mac OS X that makes working with Unix utilities easier. On Mac OS X before 10.5, install setuptools first: sudo python util/ezsetup.py.Download and install PyQtX from PyQtX Using MacPorts. Built with Qt Cocoa 4.8.Last week I covered how to install OpenCV 3 with Python 2.7 bindings on macOS Sierra and above.Mac OS X: XCode py2app if you want to build a standalone executable. I installed QGIS about 4 months ago on a brand new machine running Yosimite, using the QGIS 2.12 built for Mac OS X Mountain Lion, Mavericks, Yosemite and El Capitan.
Python For Osx Code Is ToThese tools include programs and libraries such as GCC, make, clang, etc. Step #1: Install XcodeBefore we can compile OpenCV on our system, we first need to install Xcode, Apple’s set of software development tools for the Mac Operating System.The easiest method to download Xcode is to open up the App Store application on your desktop, search for “Xcode” in the search bar, and then click the “Get” button: Figure 1: Downloading and installing Xcode on macOS.After installing Xcode you’ll want to open up a terminal and ensure you have accepted the developer license: $ sudo xcodebuild -licenseWe also need to install the Apple Command Line Tools. You should pay extra special attention to this step to ensure your OpenCV build has been configured correctly.With all that said, let’s go ahead and install OpenCV 3 with Python 3.5 bindings on macOS. If you find any step confusing or troublesome I would suggest referring to the OpenCV 3 + Python 2.7 tutorial where I have provided more insight.The exception to this is “Step #7: Configure OpenCV 3 and Python 3.5 via CMake on macOS” where I provide an extremely thorough walkthrough on how to configure your OpenCV build. MacOS: Install OpenCV 3 and Python 3.5As I mentioned in the introduction to this post, I spent last week covering how to install OpenCV 3 with Python 2.7 bindings on macOS.Many of the steps in last week’s tutorial and today’s tutorial are very similar (and in some cases identical) so I’ve tried to trim down some of the explanations for each step to reduce redundancy. In today’s tutorial we’ll learn how to install OpenCV 3 with Python 3.5 bindings on macOS.Procedure Install Python 2, enter: brew install python2 Make sure the Python command points to the latest Python you installed with Homebrew: ls -l which.I decided to break these install tutorials into two separate guides to keep them well organized and easy to follow.To learn how to install OpenCV 3 with Python 3.5 bindings on your macOS system, just keep reading.You can think of Homebrew as the macOS equivalent of Ubuntu/Debian-based apt-get.Installing Homebrew itself is super easy, just copy and paste the entire command below: $ /usr/bin/ruby -e "$(curl -fsSL )"Once Homebrew is installed you should make sure the package definitions are up to date by running: $ brew updateWe now need to update our ~/.bash_profile file (or create it if it doesn’t exist already). Step #2: Install HomebrewThe next step is to install Homebrew, a package manager for macOS. The actual installation process should take less than 5 minutes to complete.Bash_profile will automatically be source ‘d for you. Anytime you open up a new terminal your. Bash_profile are manually reloaded: $ source ~/.bash_profileThis command only needs to be executed once. Bash_profile file, save and exitor the editor followed by using source to ensure the changes to the. Bash_profile file to include Homebrew.After updating your. The above command will install Python 3.5 on your system. Using Homebrew, we can install Python 3 using the following command: $ brew install python3Note: Make sure you don’t forget the “3” in “python3”. There is also the fact that macOS does not ship with Python 3 out of the box.Instead, you should install your own version of Python that is independent from the system install. The system version of Python should serve only one purpose — support system routines and operations. Best screen capture app for macCheck that brew install python3 finished successfully. Ensure Homebrew installed without error. However, if the output is /usr/bin/python3 then you are incorrectly using the system version of Python.If you find yourself using the system version of Python instead of the Homebrew version you should: If you see /usr/local/bin/python3 then you are correctly using the Homebrew version of Python. To accomplish this, simply use the which command: $ which python3Important: Inspect this output closely. This environment will have it’s own site-packages directory, etc., allowing you to avoid any type of library versioning issues across projects.The mkvirtualenv command only needs to be executed once. Create your Python 3 virtual environmentWe can now use the mkvirtualenv command to create a Python 3 virtual environment named cv : $ mkvirtualenv cv -p python3The -p python3 switch ensures that a Python 3 virtual environment is created instead of a Python 2.7 one.Again, the above command will create a Python environment named cv that is independent from all other Python environments on your system. Each time you open up a new terminal window this file will automatically be source ‘d for you. Bash_profile , save it, exit, and then once again source it: $ source ~/.bash_profileI’ll reiterate that this command only needs to be executed once. AVFoundation errors (please see last week’s blog post for a thorough discussion on this).First, we need to download the OpenCV GitHub repo: $ cd ~Followed by the opencv_contrib repo: $ git clone Step #7: Configure OpenCV and Python 3.5 via CMake on macOSThis section of the tutorial is the most challenging and the one that you’ll want to pay the most attention to. This is because the current tagged releases of OpenCV do not provide fixes for the QTKit vs. These packages are related to either (1) tools used to build and compile, (2) libraries used for image I/O operations (i.e., loading various image file formats from disk such as JPEG, PNG, TIFF, etc.) or (3) optimization libraries.To install these prerequisites for OpenCV on macOS execute the following commands: $ brew install cmake pkg-config$ brew install jpeg libpng libtiff openexrStep #6: Download the OpenCV 3 source from GitHubAs I detailed in last week’s tutorial, OpenCV 3 on macOS needs to be compiled via the latest commit to GitHub instead of an actual tagged release (i.e., 3.0, 3.1, etc.). Install NumPyThe only Python-based prerequisite that OpenCV needs is NumPy, a scientific computing package.To install NumPy into our cv virtual environment, ensure you are in the cv environment (otherwise NumPy will be installed into the system version of Python) and then utilize pip to handle the actual installation: $ pip install numpyStep #5: Install OpenCV prerequisites using HomebrewOpenCV requires a few prerequisites to be installed before we compile it. If you see the text (cv) preceding the prompt, then you are are in the cv virtual environment: Figure 5: Make sure you see the “(cv)” text on your prompt, indicating that you are in the cv virtual environment.Otherwise, if you do not see the cv text, then you are not in the cv virtual environment: Figure 6: If you do not see the “(cv)” text on your prompt, then you are not in the cv virtual environment and you need to run the “workon” command to resolve this issue before continuing.If you find yourself in this situation all you need to do is utilize the workon command mentioned above.
0 Comments
Leave a Reply. |
AuthorDaniel ArchivesCategories |