Install Opencv Python Mac

In order to allow CMake to find the OpenCV path>\library\install\win64-msvc2015\debug\python. MacにOpenCVをインストールする方法で詰まったが、以下のサイトで解決. Run an installation script. First I will show you how to install OpenCV3 without any virtual environment and how you can also use a virtual environment to work with that build file as well. Alternately, calls from Python code organized within the Robot Framework. opencv is merely a set of python modules. I’m not sure why they don’t make that clear or maybe I’m missing something because I’m new at it. For example following is the most common one that most of people encounter. 9 at the time of recording. pip install cv2 actually installs this, which are some blog distribution utilities, not sure what it is, but it is not OpenCV. Prior to installing, have a glance through this guide and take note of the details for your platform. 5 (and maybe Tiger) already comes with Python. × Attention, ce sujet est très ancien. Execute the workon command to access the cv Python virtual environment. The way they provide is a fresh install starting from Python 2. I originally wrote this blog post when the alpha version was released, and it has now been updated on November 30th, 2018 to support the official release. 7 的包,Python的相关引用都在里面,在 site-packages 目录下有两个文件:. Importantly, the pip install methods below also work for the OpenCV GUI such as imshow etc. 0 was released on July 3rd, 2010. First, download the tar file of OpenCV 2. MacまたはLinuxでは次のようにコマンドを打つことでPythonとJupyterの環境を構築できます。インストール後のPythonの基本的な使い方はこちらに書きました。. Atlassian Sourcetree is a free Git and Mercurial client for Mac. We will also briefly study the. I have to say it’s not easy to install it. py Your computer camera will start and a window will open with the live video. Python + OpenCV Memory Leak. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. Hi guys! This tutorial is on the most efficient way to install OpenCV onto Mac OSX 10. 5) of python 3 installed on your mac, follow step 2 to install Python 3. com/translate?u=http://derjulian. On the other hand, it supports Windows, Linux, Mac Os and even the Android operating systems. Open the Terminal and write the following commands. Wrong PYTHONPATH after updating. Execute the workon command to access the cv Python virtual environment. Does Linux tutorial method work on Mac OSX? building opencv-python with visual studio 2010sp 1. Testing OpenCV 3 installation: To test the installation it is easiest to open Python and check whether it is possible to import the bindings. Download the installation script. 4 I have installed openCV with homebrew, and setup paths for libraries. I’m using OpenCV for my 4th year design project and setting it up was a huge pain. OpenCV on Mac OSX: A step-by-step guide. How can I replicate the feature-homography tutorial using the Python API? install opencv for anaconda ipython. 6 installed, I will go ahead to step 3 to install virtualenv). 7 and Python 3+ installations on a variety of platforms including OSX , Ubuntu , and yes, the Raspberry Pi. Learn about the data and image types unique to OpenCV, and find out how to manipulate pixels and images. Install Python Virtual Environments and NumPy In simple terms, virtual environments is something that lets us use different versions of libraries, softwares on same system. bz2 doesn't come with an INSTALL text file, they point you at the website - I found the OpenCV install instructions here which linked to another page with Mac specific guidelines (confusingly full of historical information for out dated OpenCV releases). ImportError: No module named opencv. but works OK when using pygame to display, opencv to capture (screen. 1, opencv-3. (Step 2) I download ctypes-opencv source and demo files. OpenCV is a highly optimized library with focus on real-time applications. Installing OpenCV to the TensorFlow Docker Image This tutorial will walk you through installing OpenCV into an existing TensorFlow Docker image. Build a Face Detection App Using Node. OpenCV是一个基于BSD许可(开源)发行的跨平台计算机视觉库,可以运行在Linux、Windows、Android和Mac OS操作系统上。 它轻量级而且高效——由一系列 C 函数和少量 C++ 类构成,同时提供了Python、Ruby、MATLAB等语言的接口,实现了图像处理和计算机视觉方面的很多通用. 7 pre-installed by Apple. Enabled with OpenCL, it can take advantage of the hardware acceleration of the underlying heterogeneous compute platform too. *FREE* shipping on qualifying offers. Install Python 3 with NumPy, SciPy and Matplotlib on macOS Catalina Posted on October 4, 2016 by Paul. or with QT $ sudo port install opencv +qt4. Install Xcode Command Line Tools. 7 on a MAC - Stack Stackoverflow. pkg and it will launch an installer. opencv_flann — библиотека быстрого поиска ближайших соседей (FLANN 1. How to Install Python 3. Installation and Usage. Esoteric errors are near impossible to parse and files are installed in odd places (odd to me, at least). Installation guide for Mac users. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. 7: pip install opencv-contrib-python Import the package(in. opencv is easy to use and install. MacユーザーのためのPythonでOpenCVを使うための開発環境. This is handy in cases when there is no easy access to a GUI's internals or the source code of the application or web page you want to act on. $ sudo apt-get install python-opencv Open Python IDLE (or IPython) and type following codes in Python terminal. It’s just not feasible if you need both Python 2 and Python 3 during developing. At this point, you should have OpenCV 4 and Python installed on your Mac. It is used for a very wide range of applications including medical image analysis, stitching street view images, surveillance video, detecting and recognizing faces,. So, let's Quickly Start Our Tutorials,. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. For window users, Once you have downloaded python, Install it. Emgu CV is a cross platform. See the "Install Python" page for the most recent instructions. To celebrate OpenCV 3. x on your machine and also use pip for package management with python 3. In the dialog that appears, go to the Downloads tab and install the Command Line Tools. http://pyetc. It has C++, C, Python and Java (Android) interfaces and supports Windows, Linux, Android, iOS and Mac OS. This is a step-by-step process on how to install opencv on Mac OS with Anaconda. OpenCVをPythonでつかう! っていう記事は沢山ありますが、以下のリンクが一番簡潔で良かったです。 Installing OpenCV 2. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing. July 11, 2013 at 8:30 AM. Downloading OpenCV and Python. To verify that your OpenCV 3 + Python + virtual environment install on macOS is working properly, you should: Open up a new terminal window. The Anaconda distribution is used by over 15 million users and includes more than 1500 popular data-science packages suitable for Windows, Linux, and MacOS. Esoteric errors are near impossible to parse and files are installed in odd places (odd to me, at least). 2)Install synaptic package manager from command line of raspberry pi. Office 2011 for Mac For Dummies is the perfect companion for Microsoft Office for Mac users upgrading to the newest version, new computer users, and those who may have switched from the Windows version of Office. Install GNU Octave on macOS and getting started with the image processing package. 16, is currently available. com/2013/01/09/installing-the-enthought-python-distribution-with-opencv/. opencv is available on Mac, Windows, Linux. OpenCV depends on NumPy, which can be installed with: # 5. Python) submitted 4 years ago by aqeelat Howdy, I used brew to install python, python3, and opencv, but I'm still having trouble importing opencv to either of them. OpenCV with XCode Installation for Mac OSX Mavericks/Yosemite December 22, 2014 December 22, 2014 mlepert Homebrew , OpenCV , OSX , Xcode Installing OpenCV is a very tricky procedure and can result in many painful hours of frustration if not done properly. C:\Python27). 04 (32-bit). Execute the workon command to access the cv Python virtual environment. 0 on an Operating System. js is the JavaScript binding of the OpenCV lib. py is a Python module used for image processing. OpenCV がインストールできたことを確認するために Python の REPL を起動します。 $ python REPL で OpenCV ライブラリをインポートして OpenCV のバージョン番号を表示します。. org then it will be okay to pip install opencv-python. Learn how to install OpenCV and import it specifically with Python 3. 0 - June 27, 2018. 7, that can be used with Python and PySpark jobs on the cluster. Stay tuned for more articles on Python and Computer Vision. X and Python 3. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. 2 working on any platform (Windows, Linux, Mac OS) with Anaconda. 7 13 April, 2019. Package authors use PyPI to distribute their software. Since Raspberry Pis are preloaded with Python, we can install OpenCV directly. Once you have installed the OpenCV, enter python in the console and try to import cv2 in order to check if OpenCV was properly installed or not. Extract the tar file in a folder and go to that folder through the terminal, e. 16インチ サマータイヤ セット【適応車種:ジェイド(fr4)】WEDS ジョーカー アイス シルバー 6. Also install Command Line tools for your XCode ! Get it. If you use Linux/Mac OS X, your device already has Python 2. 0, I have decided to perform a series of blog posts that detail how to install OpenCV 3. OpenCV와 관련된 소프트웨어, 패키지 업데이트 및 설치 미리 설치된 packages/libraries를 업데이트 해봅시다. 5) и обертки OpenCV. py) Open your command line and install opencv and pandas with pip install opencv and then pip install pandas Run the code from the command line with python myfile. 1 in my Mac, To properly install OpenCV, check any of the links @udit043 added in the comment, or refer to any of the tutorials bellow:. Mac OS X (10. sudo port install python27 Then make sure your system is using this version with: sudo port select --set python python27 Next install numpy with: sudo port install py27-numpy Now install opencv: sudo port install opencv +python27 Now edit your ~/. I have a question about installation of opencv on ec2. run pip install opencv-python if you need only main modules run pip install opencv-contrib-python if you need both main and contrib modules (check extra modules listing from OpenCV documentation ) You can either use Jupyter notebooks or any Python IDE of your choice for writing the scripts. opencv doesn’t work independently. More than 3 years have passed since last update. How to install OpenCV in MacBook. The Windows build includes both a 32-bit and 64-bit module for Python 2. In this post, I will show you how to install OpenCV 3. How can I replicate the feature-homography tutorial using the Python API? install opencv for anaconda ipython. py is a Python module used for image processing. Learn about the data and image types unique to OpenCV, and find out how to manipulate pixels and images. Installing OpenCV on Mac (Maybe Windows too) June 20, 2016 June 20, 2016 John Stamford Python 1 Comment I just thought I'd have a play about with OpenCV (Python Version) but had a few problems installing it on my Mac. Python) submitted 4 years ago by aqeelat Howdy, I used brew to install python, python3, and opencv, but I'm still having trouble importing opencv to either of them. If you have previous/other manually installed (= not installed via pip) version of OpenCV installed (e. net, c, c++ and c# versions of it. If I enter the Python 2. pyglet is a cross-platform windowing and multimedia library for Python, intended for developing games and other visually rich applications. **OpenCV is now at 3. 04 (64-bit) and Ubuntu 14. Hi guys! This tutorial is on the most efficient way to install OpenCV onto Mac OSX 10. brew install python STEP 4 – Install OpenCV 3. I am using OpenCV 2. 10 pyenv 20141211-4-g97b957d Python 2. 5 script with opencv modules as an executable file for a mac (. Step 5: Uninstalling Miniconda. 4+ along with it. We can install NumPy and OpenCV with: 1 pip install numpy 2 pip install opencv-python. 7 on my Mac OSX. Note that Python 3. bash_profile with:. Mac下安装opencv-python. Updated 26 June 2019. Most linux distributions come pre-installed with python. A full-featured CUDAand OpenCL interfaces are being actively developed right now. For Linux users, this is sure to work: sudo pip3 install opencv-python. 5 (and maybe Tiger) already comes with Python. 9 at the time of recording. When try to install OpenCV in Mac OS High Sierra by following tutorials in the internet, most probably you’ll end up with having errors related to permission denied while installation of virtualenv and virtualenvwrapper. Install OpenCV 3 for Python on Linux, Mac, and Windows by EITHER. Python) submitted 4 years ago by aqeelat Howdy, I used brew to install python, python3, and opencv, but I'm still having trouble importing opencv to either of them. **OpenCV is now at 3. If you have a CDH cluster, you can install the Anaconda parcel using Cloudera Manager. In this post we will explain how we managed to work around the mysterious installation process, and provide a simple set of instructions that will enable you to install, build and use the openCV libraries and binaries on your system. 0 with Python 2. Install Dependencies. OpenCV is an open-source library of computer vision and image processing algorithms and general-purpose numerical algorithms. Not familiar with using pip? See the Pip installation tutorial for help. I do not know what pip install cv2 actually installs but is surely not OpenCV. A step by step tutorial for installing OpenCV 3 on Yosemite ( OSX 10. Translated version of http://derjulian. whl file saved and install OpenCV using the command pip install opencv_python‑3. 3)Install tight-vnc server from command line. With Anconda we can install python packages within a specific Conda environment using conda install instead of pip, the typical python package management system. I then installed OpenCV along with the python bindings (all using synaptic, I'm new to Linux). Finally, we can enter a wonderfully simple command to install opencv: sudo pip install opencv-contrib-python. Gesture Recognition using OpenCV + Python Saturday, March 21, 2015 This python script can be used to analyse hand gestures by contour detection and convex hull of palm region using OpenCV, a library used fo. If you encounter errors, try installing its dependents with +universal whenever possible. Installation. Display a live video feed taken from a webcam using OpenCV's VideoCapture class with Java, C/C++ and Python. import cv2 as cv print(cv. Things may vary on different computers. Next, I would normally suggest just typing conda install opencv at the command prompt, but this (unsurprisingly) lead me to a package conflict with NumPy! Yep, the. Does Linux tutorial method work on Mac OSX? building opencv-python with visual studio 2010sp 1. Installations of python and some useful libraries for mac (including openCV) Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Step 6: Make OpenCV3 Python symlink in our virtual environment. On the other hand, it supports Windows, Linux, Mac Os and even the Android operating systems. Run an installation script. Warning: opencv dependency gcc was built with a different C++ standard library (libstdc++ from clang). The next step is to install Pipenv, so you can install dependencies and manage virtual environments. I believe that if you are trying to compile OpenCV on an Intel Mac, you will also have to install MacOSX10. We need to find the face on each image, convert to grayscale, crop it and save the image to the dataset. whl" Sustituye la ruta entre comillas por la ruta donde hayas descargado el archivo. I navigate to the src directory and run: sudo python setup. Enter the command to start a vnc-server on Rpi. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. QuickTip: How Do I Install pip on macOS or OS X? Ahmad Awais Even if you are not into Python there comes a time when you end up with the need of having to install pip on your macOS or OSX based computer. Silahkan gunakan perintah berikut. learnpython) submitted 4 years ago by aqeelat Howdy, I used brew to install python, python3, and opencv, but I'm still having trouble importing opencv to either of them. 本文主要记录下Mac环境下的python-opencv的安装过程环境准备安装过程测试代码环境准备python环境是必须的,如果没有安装可以参考python安装默认应该是已经安装有的,可以输入命令确认: 博文 来自: shenxiandashu的专栏. Gallery About Documentation Support About Anaconda, Inc. Posted on September 22, 2014 September 22, 2014 by Bharat Sesham OpenCV is a library of programming functions mainly aimed at Computer Vision. The following steps get you started with installing a new version of Python on your Mac OS X system. OpenCV is a Open Source Computer Vision library. x $ brew install homebrew/science/opencv 會有警告訊息. There are a ton of outdated blog posts on how to do this – at the time of writing this one works. Allowing OpenCV functions to be called from. Mac Homebrew installation steps have changed. It's really helpful if you want to build your own functional apps. $ sudo -H pip3 install -U pip numpy Now the pip is installed, next, we can install virtualenv and virtualenvwrapper, two tools for managing virtual environments. In this article, I will show you how to install Python 3 with NumPy, SciPy and Matplotlib on macOS Catalina. For Python 3. 0 with Python 2. OpenCV Features. Hem akademik hem de ticari amaç için kullanımı ücretsizdir. I struggled for half a day in terminal to install opencv package for Jupyter Notebook which is operated from Anaconda. opencv is available on Mac, Windows, Linux. OpenCV is utilized for a wide range of picture and video examination, similar to facial acknowledgement and location, tag perusing, photograph altering, progressed automated vision, optical character acknowledgement, and a mess more. 0+contrib-cp36-cp36m-win_amd64. Gallery About Documentation Support About Anaconda, Inc. Unofficial pre-built OpenCV packages for Python. $ pip install opencv-python MacOS $ brew install opencv3 --with-contrib --with-python3 Linux $ sudo apt-get install libopencv-dev python-opencv To check if your installation was successful or not, run the following command in either a Python shell, or your command prompt/ terminal: import cv2. SQLite is available by default on python 3 so you do not need to install it. I have another issue now: How can I export a python 2. Hi all - I've been having some trouble using the python bindings that build with the version of OpenCV included with ROS. There is more than one ROS distribution supported at a time. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. run pip install opencv-python if you need only main modules run pip install opencv-contrib-python if you need both main and contrib modules (check extra modules listing from OpenCV documentation ) You can either use Jupyter notebooks or any Python IDE of your choice for writing the scripts. pkg and it will launch an installer. Followers 0. Installing them is fairly straightforward, just double click on gcc4. mac, opencv, osx, python. Face Detection with Python using OpenCV. The official home of the Python Programming Language. How to install OpenCV in MacBook. Is that possible? Thanks in advance. If you continue browsing the site, you agree to the use of cookies on this website. In this post, we will provide a bash script for installing OpenCV-4. So the path up there may be differet. Python and OpenCV installed (installation instruction in the appropriate section). How to install python opencv on macOS Sierra ? This is a very simple post which helps you install python-opencv on your mac OS Sierra. I have to say it's not easy to install it. Wrong PYTHONPATH after updating. This is handy in cases when there is no easy access to a GUI's internals or the source code of the application or web page you want to act on. With Anconda we can install python packages within a specific Conda environment using conda install instead of pip, the typical python package management system. SET OpenCV_DIR in CMakeList. How To Install Opencv In Windows 7 32 Bit. As an existing or experienced Python user, you may wish to install Jupyter using Python's package manager, pip, instead of Anaconda. Step 5: Check in the Python console that openCV has been installed and that it is recognised by Python 3. To check that OpenCV is successfully installed and configured with Python, test the library. Note that you can use the same steps to get OpenCV 3. OpenCV depends on NumPy, which can be installed with: # 5. Pillow is a fork of PIL that adds some user-friendly features. Below steps are tested for Ubuntu 16. Go to terminal window and type the following: 2. 7 mac os x lion". This procedure will be the same for PC with Mac OS with some minor modifications. 04 Linux with Python. 2 with their built in Python wrapper, but the function imread() doesn't exist. Install Latest Version of OpenCV on Debian from Sources Here is how to install the latest OpenCV version on Debian from sources. Beesight Soft has started by innovative passion "together makes perfect". GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. 6 $ sudo port install opencv +python26. In my case, I'll be installing OpenCV 2. net/projects/roboking. Step 1: INSTALLING PYTHON :-First step is to install python in your computer. Recently, I switched to a new Mac Retina (one of the numerous perks of working at Yahoo ;) ) and wanted to install OpenCV in it using Homebrew. Even though OpenCV includes the Python 2 bindings by default, the same is not true of Python 3. x with Python By Example: Make the most of OpenCV and Python to build applications for object recognition and augmented reality, 2nd Edition [Gabriel Garrido, Prateek Joshi] on Amazon. I have tried following the tutorial to compile OpenCV that was suggested by namasteybhaisab, however I had several problems when trying to use python 3. it is Open Source and free. **OpenCV is now at 3. 5 (and maybe Tiger) already comes with Python. Execute the workon command to access the cv Python virtual environment. dll' to where your python is installed and located (e. In order to perform OpenCV OCR text recognition, we’ll first need to install Tesseract v4 which includes a highly accurate deep learning-based model for text recognition. Learn about the data and image types unique to OpenCV, and find out how to manipulate pixels and images. To verify that your OpenCV 3 + Python 2. Install OpenCV 3 for Python on Linux, Mac, and Windows by EITHER. Finally, you should go to Environment Variables in Control Panel and add to the path variable: ~\opencv\builds\bin\Release. Contact us if you have any questions during the installation. Nevertheless, it should also work on any other relatively modern version of Windows OS. Human pose estimation opencv python github. Mac OS X (10. I have installed OpenCV 3. 6 on macOS 10. Now OpenCV has C++, Python and Java interfaces and supports Windows, Linux, Mac OS, iOS and Android. I am using OpenCV 2. This course offers Python developers a detailed introduction to OpenCV 3, starting with installing and configuring your Mac, Windows, or Linux development environment along with Python 3. conda install linux-64 v4. Welcome to an instructional exercise arrangement, covering OpenCV, which is a picture and video handling library with ties in C++, C, Python, and Java. 2)Install synaptic package manager from command line of raspberry pi. Start the build process over again. I am following this pyimagesearch tutorial to help me install OpenCV 3 on macOS Sierra 10. 10; XCode; Command Line Tools (This is done from inside XCode) CMake. GitHub Gist: instantly share code, notes, and snippets. I ran the usual. OpenCV is a Open Source Computer Vision library. In this post, we will provide a bash script for installing OpenCV-4. In this post we will explain how we managed to work around the mysterious installation process, and provide a simple set of instructions that will enable you to install, build and use the openCV libraries and binaries on your system. OpenCV means Intel® Open Source Computer Vision Library. See video for help. If I run in terminal, everything works just fine. Installing OpenCV for Python on Mac Lion Like previous installs of other command-line tools like FFMPEG, the frustration often does not seem worth the trouble. In this post, I am going to tell you how to install OpenCV on your Mac OSX, so that you can import cv in your python code. This will help : HOWTO: Install, Build and Use openCV (MacOSX 10. OpenCV is a tool that has has C++, C, Python and Java interfaces and supports Windows, Linux, Mac OS, iOS and Android for computational efficiency and with a strong focus on real-time applications, written in optimized C/C++, the library can take advantage of multi-core processing and enabled to take advantage of the hardware acceleration of the underlying heterogeneous compute platform. The difference between installing a python package from source and through pip are given in the following table:. Through Anaconda, open up an instance of Spyder. py) Open your command line and install opencv and pandas with pip install opencv and then pip install pandas Run the code from the command line with python myfile. X version, it may come to its end sooner or later. Installing OpenCV on Mac OS X First the source code OpenCV-2. pip install OpenCV for Python. Installation and Usage. The benefit of using Homebrew is that it greatly simplifies the install process (although it can pose problems of its own if you aren’t careful) to only a. resize and get hands-on with examples provided for most of the scenarios encountered in regular usage. Execute the workon command to access the cv Python virtual environment. CV_CAP_PROP_FRAME_WIDTH, width) cap. Installing OpenCV for Python on Mac OSX 10. Install package python-opencv with following command in terminal (as root user). Audio and Digital Signal Processing (DSP) Control Your Raspberry Pi From Your Phone / Tablet. I'm trying to install OpenCV 3. Python) submitted 4 years ago by aqeelat Howdy, I used brew to install python, python3, and opencv, but I'm still having trouble importing opencv to either of them. net/projects/roboking. Attempt to import your Python + OpenCV 3 bindings on macOS. Install Dlib on MacOS >= 10. Installation and Usage. net/projects/roboking&hl=en&ie=UTF-8&sl=de&tl=en. If you already have Python (2. OpenCV on Wheels. More importantly, they put up a zip file of the OpenCV binaries built with the same compiler as the one used for python 2. Problems installing opencv on mac with python. OpenCV on Mac OSX: A step-by-step guide. Welcome to this on OpenCV Python Tutorial For Beginners. To uninstall Python Anconda/Miniconda, we just simply remove the installation folder and remove the environment variables set in the hidden file. Installing Python, PIL/Pillow, and cImage. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: