Python Linux Tutorial

Python is a powerful programming language ideal for scripting and rapid application development. com design desktop dev estate faq finance framework game google gui help howto kde kernel library linux list livecd macosx money mp3 mysql opensource photo python qt quick quicksilver radio read realty recipe reference resources security server. tgz Images used in this tutorial: images. Python support in NetBeans This project is a community-driven effort. In addition, Python is popular among developers because it is very easy and quick programming, and it's actually simple to master. (For example, on Ubuntu this can be as easy as running sudo apt-get install python on the command line. 5 (which will support Python-pip as well) Download Python source. This tutorial gives enough understanding on Python programming language. This manual assumes that you have already have Python and/or Jython and/or IronPython installed in your machine, as well as Eclipse. Generally, Linux based distros have pre-installed Python version. 5\Pc Link against the Python library. 7 hours ago · The popular Linux distributions that can be run on RPi include Ubuntu, Kali Linux, CentOS, Arch Linux ARM, Gentoo, openSUSE, OSMC, OpenMediaVault, Recalbox, RetroPie, Lakka and many others. Enumeration is the key. If you come across any errors please leave a comment below. 04 is a Python Library for Data Manipulation and Analysis. Roughly speaking, a demo is made up of an initialization script. Since this tutorial is about using Theano, you should read over the Theano basic tutorial first. py script used on Windows and Mac. You can find the source code for these examples on GitHub. Following example shows the usage of combination of this four functions to get detailed information about python's builtin module "os". Code of Conduct¶. Python Programming for Beginners. Python interpreters are available for many operating systems, allowing Python code to run on a wide variety of systems. The holy grail for Python 2. You will learn what is a heatmap, how to create it, how to change its colors, adjust its font size, and much more, so let's get started. Portable Python is not being developed anymore. ) To install from source, follow these steps:. This library is used to visualize data based on Matplotlib. Migrating a C++ game from SDL 1. There are several modules that can play a sound file (. To get the most out of this tutorial you should be familiar with programming, specifically Python and pandas specifically. ( Requires Python 2. pyenv Tutorial João Moreira. Welcome! You are about to start on a journey to learn how to create web applications with Python and the Flask framework. It supports addition and removal of the smallest element in O(log n) time. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. The simplest directive in Python is the "print" directive - it simply prints out a line (and also includes a newline, unlike in C). At the end of this tutorial, there is a quick reference for Essential pdb Commands. Update: This post is outdated. Other G Code Generators is a conversational machining program written by Ray Henry and Matt Shaver with additional MOP's by Lawrence Glaister. With PyCharm, you can access the command line, connect to a database, create a virtual environment, and manage your version control system all in one place, saving time by avoiding constantly switching between windows. Hence, in this Python Django Tutorial, we get started with Django, a very common framework with Python. This tutorial gives enough understanding on. See the short tutorial in the documentation for an illustration of their usage. This video shows how to write your first python script, as well as how to use the interactive mode. This gives you the increased productivity of this. 5), including features such as IntelliSense, linting, debugging, code navigation, code formatting, Jupyter notebook support, refactoring, variable explorer, test explorer, snippets, and more!. 7 is the most widely used version of Python and has the most compatible libraries (aka modules). Introduction - The basics of python programming. It is distributed as a single file module and has no dependencies other than the Python Standard Library. The only way to master programming is through active participation. Secondly, i want tutorials about natural language processing in python. Also, we will learn about available python frameworks like Django, Flask, Pyramid, etc. Whether you want to write your own code for Artificial Intelligence, Machine Learning, Internet Of Things, Bigdata and Data analytics or Automation, Python is one of the best choices. Get started learning Python with this tutorial from our archives. Install PyCharm Python IDE in Windows, Mac OS X, Linux/Unix By Chaitanya Singh | Filed Under: Python Tutorial In the previous tutorials we have seen the Python introduction and installation. Python Training and Tutorials. The Python for. How To Install Python 3 and Set Up a Local Programming Environment on Debian 8 / kali linux 2016. A tool for installing and managing python packages on Linux. Python is available for various platforms which include Linux, Windows and Mac OS. If you’re in Ubuntu, you can install the Python dependencies like this:. There are so many places to learn Python. On Linux you can type ipython or in Windows click the ipython icon and you will get an enhanced interactive Python shell that has many useful features. Or just explore blog posts, libraries, and tools for building on AWS in Python. It is designed to make the process of creating and distributing projects simple, stable and reproducible across systems and is available on Linux, Windows, and OSX. can you help in this regard. Python extension for Visual Studio Code. Python version 3. Due to the way most Linux distributions are handling the Python 3 migration, Linux users using the system Python without creating a virtual environment first should replace the python command in this tutorial with python3 and the pip command with pip3--user. Python is available on a wide variety of platforms including Linux and Mac OS X. In either case, you will also need to install the PySerial library to allow communication with the Arduino. Keras is a high-level neural networks API, written in Python and capable of running on top of TensorFlow, CNTK, or Theano. It even covers creating an installer for your app. This tutorial uses Python 3, because it more semantically correct and supports newer features. Python Programming language is also freely-distributable, and the same site even has tips and other third-party tools, programs, modules and more documentation. Run and debug. Beginning Game Programming v2. * In this beginner’s BGE Python tutorial you’ll learn how to use Python scripting in Blender to make a car move, increase in speed, and stop. 7 hours ago · The popular Linux distributions that can be run on RPi include Ubuntu, Kali Linux, CentOS, Arch Linux ARM, Gentoo, openSUSE, OSMC, OpenMediaVault, Recalbox, RetroPie, Lakka and many others. Local Environment Setup Open a terminal window and type "python" to find out if it is already installed and which version is installed. Working with Python in Visual Studio Code, using the Microsoft Python extension, is simple, fun, and productive. NET virtual machines. Classes - Using classes in a script. Python Number & Strings. 5 (which will support Python-pip as well) Download Python source. It greatly simplifies the process of ripping a DVD to Divx (mpeg4) format. There are various different installation files for different computer platforms available on the download site. Learn Python in the most social and fun way, with SoloLearn! Learn Python, one of today's most in-demand programming languages on-the-go, while playing, for FREE! Compete and collaborate with your fellow SoloLearners, while surfing through short lessons and fun quizzes. Stackify was founded in 2012 with the goal to create an easy to use set of tools for developers to improve their applications. For interactive text mode programs (under Linux/Unix), the ncurses library, and Python's standard curses module as a wrapper for it, are just what you need for your program. In this tutorial, you will learn how to perform many operations on NumPy arrays such as adding, removing, sorting, and manipulating elements in many ways. Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. local/bin to your PATH. All training sessions are from 9:00AM to 11:00AM at 307 Frey Computing Services Center. Output: Python 2. Everyone interacting in the pip project’s codebases, issue trackers, chat rooms, and mailing lists is expected to follow the PyPA Code of Conduct. It is written many different tools and libraries. This tutorial is for Python Mode in Processing 3+. It was created by Guido von Rossum in 1990, named after - you guessed it - the comedy, "Monty Python's Flying Circus". Unix (Solaris, Linux, FreeBSD, AIX, HP/UX, SunOS, IRIX, etc. The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. This tutorial was adapted from the book, Getting Started with Processing, by Casey Reas and Ben Fry, O'Reilly / Make 2010. Oracle does not actively participate in or directly support this effort. This ubiquity makes it a sensible choice for most scripting tasks. Here is a sample of what you should include:. Recently, Python released a new version of their installers that have made that process. 04 is a Python Library for Data Manipulation and Analysis. This tutorial introduces a series of commands and concepts that will allow you to effectively manage a Linux/ Unix system. Complete Roguelike Tutorial, using python+libtcod. SQLite is a single file relational database bundled with most standard Python installs. That >>> symbol is the Python interpreter prompt that you can use interactively. 所以程序员们都喜欢黏在 Linux 上. Each tutorial is written in depth with examples and detailed explanation. The following examples use the Matrikon OPC Simulation Server which you can download for free from the company's website. The YoLinux portal covers topics from desktop to servers and from developers to users. The video above will give you an overview of the contents of this tutorial. This is a wizard for mencoder. Python is also suitable as an extension language for customizable applications. Identifying the accurate CentOS version may be required to help you or your support team to troubleshoot. Get started learning Python with this tutorial from our archives. Linux is an excellent environment for machine learning development with Python. Python was develop by Guido van Rossum. Learn how to setup OpenCV-Python on your computer! Gui Features in OpenCV Here you will learn how to display and save images and videos, control mouse events and create trackbar. This quick tutorial shows you how to execute shell commands in Python. org's getting started page). It is written many different tools and libraries. 0 Guido van Rossum Fred L. If you don't have Python installed, or if you want a different version, first check what Linux distribution you are using with the following command: command-line $ grep ^NAME= /etc/os-release. C, Embedded, Linux. If you are using NetBeans 8. 7 licensed under the LGPLv2. A version of this tutorial for Python 3 is at Non-Programmer's Tutorial for Python 3. It uses the open source Mono C# compiler which runs on Windows and most Unix systems, but the Microsoft C# compiler (csc. Project 0: Unix/Python Tutorial Introduction This tutorial will cover the basics of working in the Unix environment for the Berkeley instructional machines and a small Python tutorial. Fedora Linux OS used for Installation of python. On paper, the connector is compatible, only flat the call. 1 Since the choice of the directory where the interpreter lives is an installation option, other places are possible; check with your local Python guru or system administrator. Cannot install tensorflow on Jetson nano. As of Biopython 1. 5 or later with developer packages (python-dev, python-numpy) ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev [optional] libtbb2 libtbb-dev [optional] libdc1394 2. Getting Started with Python Programming and Scripting in Linux - Part 1. 1 Tools->Plugin menu. You can read more about Python unicode strings here. Could I ask you a couple of questions about setting the PYTHONPATH up? I’m not quite. Although it is possible to use many different programming languages within Jupyter Notebooks, this article will focus on Python as it is the most common use case. Tutorials and Exercises to cover Python Basics to Data analytics and Database. To install Python 3 on Linux. Expert-taught videos on this open-source software explain how to write Python code, including creating functions and objects, and offer Python examples like a normalized database interface and a CRUD application. An operating system is the set of basic programs and utilities that make your computer run. Posted: March 25, 2017. 0 and OpenUSB, but the user does not need to worry about that, unless in some corner cases. 04 and any Ubuntu-based distribution, including Kubuntu, Linux Mint, and Elementary OS. Design and code. How to Create Python Virtual Environment in Ubuntu Linux In this tutorial we are going to learn how to setup python virtual environment in Ubuntu Linux. This tutorial provides a basic Python programmer’s introduction to working with gRPC. The following examples use the Matrikon OPC Simulation Server which you can download for free from the company's website. Code - FAQ Posted by skyhawk133 : Announcement Dream. What is PyQt5? PyQt is a library that lets you use the Qt GUI framework from Python. Popular are Ubuntu, Fedora, Linux Mint, Debian. How To Install Python 3 and Set Up a Programming Environment on an Ubuntu 18. This tutorial is based on Python 3 and all the examples in this tutorial have been tested and verified in Python 3. The same steps apply for Ubuntu 16. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the Python programming language. 1 If you have a different version of Python installed, at least 3. Python Scripting Tutorial for Beginners The first step to getting started with python is to learn the basics which are needed for scripting. Python is a great language for beginning programmers, but it also has the power and flexibility to run major websites like Pinterest and Dropbox. It is ideally designed for rapid prototyping of complex applications. CEF is based on Google Chromium and focuses on facilitating embedded browser use cases in third-party applications. Qt Designer helps you build a GUI (graphical user interface). x is legacy, Python 3. Setting up Python On Athena* / Linux Python should be set up correctly on the Linux athena* machines. The host can be any OS, and doesn't matter since we won't be using it at all. 1c standard. local (with ~ expanded to the absolute path to your home directory) so you'll need to add ~/. Python: A fairly simple, readable, interpreted, general-purpose and high-level programming language. You'll learn how to manipulate cron jobs from a Python program using the python-crontab module. The same steps apply for Ubuntu 16. It covers a very basic example of how to use Qt Designer with PyQt and Python. Python examples (example source code) Organized by topic. x is available, run the following command in the Linux terminal: $ which python3 If available, it will return the path to the Python3 executable as /usr/local/bin/python3. If you already have a development environment set up, see Python and GCP to get an overview of how to run Python apps on GCP. get_user_data_dir() and its other application framework tools, and GObject and its property and signals model. Options include: (All operating systems) A download from python. Examples are given in C, Python, and Java. Using Kali Linux, certified ethical hackers can test networks on their organizations' behalves, to see if they're vulnerable to outside attacks. The binding is created using the standard ctypes library, and is provided under an extremely liberal BSD-style Open-Source license. It's a very stable and performant way to collect data. It was developed with a focus on enabling fast experimentation. x are usually available in most modern Linux distributions out of the box. Python Training and Tutorials. Find all the tools, documentation, and sample code you need to develop secure, reliable, and scalable Python applications on the AWS cloud. Unix is also an operating system like Linux. If you’re in Ubuntu, you can install the Python dependencies like this:. Working with Python in Visual Studio Code, using the Microsoft Python extension, is simple, fun, and productive. Well, that’s all for now. How do I execute standard Unix or Linux shell commands using Python? Is there a command to invoke Unix commands using Python programs? You can execute the command in a subshell using os. A good example of a travis. In this tutorial, we will focus primarily on it's ability to enhance the Unix/Linux shell environment. There are two versions, a paid professional version or a community edition which is free for use. It’s free and open-source, and runs on macOS, Linux, and Windows. In this series, 'Learn Python 3' the aim is to teach you Python 3 as quickly as possible so you can. Also, there is no shortage of advanced Python courses. They provide a step-by-step process to doing development and devops activities with Ubuntu, on servers, clouds or devices. Given a text string, it will speak the written words in the English language. Setting up a Python development environment This tutorial shows how to prepare your local machine for Python development, including developing Python apps that run on Google Cloud Platform (GCP). Developers can choose. ) On Windows machines where you have installed from the Microsoft Store, the python3. In this chapter, you will look at the history and growth of Linux and cover up the user based model and concept which Linux offers — interfaces which owe a great deal to the UNIX tradition. Not every command will work for each system as Linux varies so much. PyBluez is a Python extension module written in C that provides access to system Bluetooth resources in an object oriented, modular manner. If you are a Python developer who is new to CI/CD concepts, or you might be familiar with these concepts but don't know how to implement building your application using Jenkins, then. Following example shows the usage of combination of this four functions to get detailed information about python's builtin module "os". For visualization, matplotlib is a basic library that enables many other libraries to run and plot on its base including seaborn or wordcloud that you will use in this tutorial. Linux tutorial provides basic and advanced concepts of Linux. Extracting needed data out of a bunch of alphabets and symbols, thanks to this great library, has become a lot easier. qt designer python. Complete documentation for ActivePython 2. Azure Key Vault helps you protect secrets such as the API keys and database connection strings needed to access your applications, services, and IT resources. Python Packaging. Here we are not going to cover python for application development but for automation. One of our software engineers spent the better part of a day writing a C++ program that would look through all the user's directories and add up the space they were using and make a listing of the results. Python Number & Strings. (Among R users, R Studio tends to be a more popular choice). JournalDev is one of the most popular websites for Java, Python, Android, and related technical articles. Learn Python in the most social and fun way, with SoloLearn! Learn Python, one of today's most in-demand programming languages on-the-go, while playing, for FREE! Compete and collaborate with your fellow SoloLearners, while surfing through short lessons and fun quizzes. Free art articles blog blogging bluetooth book books c++ cheatsheet choosing cms code dating datinglo. Python examples (example source code) Organized by topic. Table of contents. You might even be new to Programming all-together. Learn how to setup OpenCV-Python on your computer! Gui Features in OpenCV Here you will learn how to display and save images and videos, control mouse events and create trackbar. Type 'idle' at the command prompt to ensure that everything is working correctly. 7 reference can be found here: python. Also, there is no shortage of advanced Python courses. This guide is maintained on GitHub by the Python Packaging Authority. This tutorial gives enough understanding on. This versatility allows developers to use Python to create smaller scripts and applications for the web as well as to do back-end development on a larger scale. Local Environment Setup Open a terminal window and type "python" to find out if it is already installed and which version is installed. Python should be set up correctly on the Linux athena machines. This should start up the Python development environment IDLE. The programs that make up Python Audio Tools provide a consistent interface for painless switching between them. Fedora Linux OS used for Installation of python. Linux tutorial provides basic and advanced concepts of Linux. At the end of this tutorial, there is a quick reference for Essential pdb Commands. A Visual Studio Code extension with rich support for the Python language (for all actively supported versions of the language: 2. There are many python IDEs available but here are some of the best python editors. De-Bugging Python, a Tutorial Test Driven Development in Python a Tutorial from O'Reilly's OnLamp Python Development Center added December 7, 2004 Agile Testing Blog Articles and Tutorials Editors and IDE's (7) Python with Stani's Python Editor (SPE) from ShowMeDo added March 17, 2006 Eclipse Integratuion: Using Eclipse as an Editor for Python. To get started working with Python, you'll need to have access to the Python interpreter. Even some Windows computers (notably those from HP) now come with Python already installed. This site has something for the total beginner and seasoned Unity user alike. OpenOPC Library Tutorial The best way to learn the OpenOPC library is by trying it interactively from the Python Shell. This is the first tutorial about Python and GeeXLab. Python is a programming language with use to make a web application and more places. A version of this tutorial for Python 3 is at Non-Programmer's Tutorial for Python 3. BLUE SKY STUDIOS are looking for Linux Administrator to maintain and support the Studio's 450+ production Linux workstations, including daily interactions with the Studio’s digital animation artists. Using UART on Raspberry Pi – Python. If you want to use GTK+ 2 in your application, use PyGTK, instead. 62, we support both Python 2 and Python 3. This linuxconfig's page offers a range of tutorials for Linux users and Linux professionals. The Python Software Foundation is a non-profit corporation. Due to the way most Linux distributions are handling the Python 3 migration, Linux users using the system Python without creating a virtual environment first should replace the python command in this tutorial with python3 and the pip command with pip3--user. Many professional software engineers use Python every day to do their job, for both large projects and small ones. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel. Popular are Ubuntu, Fedora, Linux Mint, Debian. 7+ or Python 3 version 3. Visual Python Tkinter IDE. push({}); Install PIP on CentOS/. C) Installing Thonny IDE – Linux. CEF is based on Google Chromium and focuses on facilitating embedded browser use cases in third-party applications. 189: Getting Started with Python and Idle Getting Started: Python and IDLE Introduction This handout will cover how to set up Python and introduce you to IDLE, the Python development environment we will be using throughout this course. Several extensions allow access to many of the features offered by PostgreSQL. via command line in Linux ( Ubuntu or Debian Based) and in Windows without the command prompt. This website contains the full text of the Python Data Science Handbook by Jake VanderPlas; the content is available on GitHub in the form of Jupyter notebooks. Related Course: Zero to Deep Learning with Python and Keras. On Python >= 3. Technical on-line training of Linux and Linux applications installation, configuration and use for the novice and professional. ★⋙ Full Offline Documentation for Python ⋙ from little drops ★ ★⋙ Full Offline Python Book★ ★⋙ Full Python Course Tutorial - Offline ★ ★⋙ Developer Libraries ★ 👍👍👍👍👍 Note : Please give 5 Star, It will encourage us. If you don't have Python installed, or if you want a different version, first check what Linux distribution you are using with the following command: command-line $ grep ^NAME= /etc/os-release. It has been tested both on Linux and Windows. PyOpenGL is the most common cross platform Python binding to OpenGL and related APIs. x version is incorporated in many of them. For example: edit the anacron at /etc/cron. It is designed to make the process of creating and distributing projects simple, stable and reproducible across systems and is available on Linux, Windows, and OSX. If you see any errors or have comments, please let us know. It was first released in 1991. With over 300 packages for data science, anaconda provides optimal support with efficient results. Python in Linux. Although it is possible to use many different programming languages within Jupyter Notebooks, this article will focus on Python as it is the most common use case. Free art articles blog blogging bluetooth book books c++ cheatsheet choosing cms code dating datinglo. There are two major Python versions, Python 2 and Python 3. All training sessions are from 9:00AM to 11:00AM at 307 Frey Computing Services Center. Python Programming tutorials from beginner to advanced on a massive variety of topics. via command line in Linux ( Ubuntu or Debian Based) and in Windows without the command prompt. Finally, Spyder IDE is a powerful scientific environment written in Python, for Python, and designed by and for Scientists, Engineers and Data Analysts. Python is installed by default on all the major Linux distributions. ActivePython is built for your data science and development teams to move fast and deliver great products to the standards of today’s top enterprises. Python is an object-oriented programming language created by Guido Rossum in 1989. Python in Linux. It is also possible to run Windows or Android on the RPi board. NumPy is a Python Library/ module which is used for scientific calculations in Python programming. 0 and above. Python tutorial provides basic and advanced concepts of Python. , editor 16 de octubre de 2000 BeOpen PythonLabs Correo electrónico: [email protected] OpenOPC works with both Windows and non-Windows platforms. A good example of a travis. WINLAB Outlines Python Introduction More comprehensive tutorial. 6 or later and Numpy 1. Learn Python The Hard Way: This book tells you how the hard way is actually the easy and the right way to learn Python. py script used on Windows and Mac. This handout will cover how to set up Python and introduce you to IDLE, the Python development environment we will be using throughout this course. PyGObject, including this documentation, is licensed under the LGPLv2. Even some Windows computers (notably those from HP) now come with Python already installed. For example, this will typically print ~/. GUI programming introduces new problems compared to interacting with the standard output (console / terminal). 3 "Rosa" is December 2015 release of the polished and widely-used Linux distribution. path will be given. Migrating a C++ game from SDL 1. Read everything online for free or purchase the Supporter's Edition for nicely-formatted ebooks. To install Thonny on your Linux computer, it depends on your Linux distribution and version, follow the next instructions for your system. Python is portable and can be used on Linux, Windows, Macintosh, Solaris, FreeBSD, OS/2, Amiga, AROS, AS/400 and many more. Python Programming Language | Introduction. Today we are going to make a Python up/down host checker "How to Make a Python host checker for Linux" that works on Linux only. As important as the toolkit is its underpinnings, with PyGTK you use GLib as well, with its filesystem abstractions (python module gio) that are very important for the Linux desktop, its high-level cross-desktop functions such as glib. GTK is the Gnome desktop graphics library first developed for Gimp, the GNU Image Manipulation Program. In a fast, simple, yet extensible way. Trape -- People Tracker On Internet Reviewed by Kali Linux on April 04, 2019 Rating: 5. If you develop applications that you want to keep an eye on and leave a trace of their activity in the system log in a way similar to many daemons running on a typical Linux system, you can do so with the syslog function located in the syslog module. Linux is an excellent environment for machine learning development with Python. This tutorial will demonstrate how to write tests for Python code with pytest, and how to utilize it to cater for a wide range of testing scenarios. 5\Pc Link against the Python library. An example of a project upgrade from SDL 1. and if it is written in python 3 then you would use python3. Learn how to use Python for web development, data science, machine learning, and more! Read the latest Python tutorials and insights from top developers. Please consult the Python Docs for this info. Linux / UNIX: Python programming tutorial for system administrators last updated September 6, 2007 in Categories Beyond nixCraft , Howto , Linux , Sys admin , Tips , UNIX Generally I use Perl and Shell script for automation or to make system administration easier for me. The work on Flask has made it incredibly easy to get an API up and going quickly. graphql-python Tutorial - Introduction Motivation Python is a general purpose and mature language, used to create solutions from Web APIs to Artificial Intelligence. Anaconda is data science and machine learning platform for the Python and R programming languages. Now over 1,200 organizations in nearly 60 countries rely on Stackify’s tools to provide critical application performance and code insights so they can deploy better applications faster. In Windows you may be able to double click on the icon for triangle. Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. 4: from evdev import InputDevice from selectors import DefaultSelector , EVENT_READ selector = selectors. In either case, you will also need to install the PySerial library to allow communication with the Arduino. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next Python interview ahead of time. Introduction. Unix (Solaris, Linux, FreeBSD, AIX, HP/UX, SunOS, IRIX, etc. 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: