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Installing Python 3 on Mac OS X





There’s a good chance that you already have Python on your operating system
If so, you do not need to install or configure anything else to use Python. Having said that, I would strongly recommend that you install the tools and libraries described in the guides below before you start building Python applications for real-world use..source:https://cdn-images-1.medium.com/max/1600/1*X7729FJyghz1ADa5OGhrqg.png

In this article I am going to explain the steps to install Python 3 in your Mac OS machine. 

Image source:Google
You may want to print these instructions before proceeding, so that you can refer to them while downloading and installing Python. Or, just keep this document in your browser. You should read each step completely before performing the action that it describes.

Python comes pre-installed on Mac OS X so it is easy to start using. However, to take advantage of the latest versions of Python, you will need to download and install newer versions alongside the system ones. The easiest way to do that is to install one of the binary installers for OS X from the Python Download page.

Before process to install Python launch this link and check all available versions of Python.


  
After downloading Mac OS open the .pkg installer you will see the pop up windows like this,



This package will install Python 3.7.2 for macOS 10.9 or later.


Python for macOS consists of the Python programming language interpreter, plus a set of programs to allow easy access to it for macOS users including an integrated development environment IDLE.

At the end of this install, click on Install Certificates for SSL root certificates

NEW in 3.7.0: two installer variants (10.9+ 64-bit-only, 10.6+ 64-/32-bit), built-in Tcl/Tk 8.6 support (no additional third-party downloads!), OpenSSL 1.1.0, and more!
Python 3 and Python 2 Co-existence

Python.org Python 3.7 and 2.7.x versions can both be installed on your system and will not conflict. Command names for Python 3 contain a 3 in them, python3 (or python3.7), idle3 (or idle3.7), pip3 (or pip3.7), etc.  Python 2.7 command names contain a 2 or no digit: python2 (or python2.7 or python), idle2 (or  idle2.7 or idle), etc.

Step1 Click the Continue button to proceed further,



Step2:select the destination to install Python on your machine


Step 3:Congratulations! You done your first level of installation

Congratulations!  Python 3.7.2 for macOS 10.9 or later was successfully installed.

One more thing: to verify the identity of secure network connections, this Python needs a set of SSL root certificates.  You can download and install a current curated set from the Certifi project by double-clicking on the Install Certificates icon in the Finder window.  See the ReadMe file for more information.

Thats it all set for you and you can launch the Python software to learn your course.

Your best way to get started with Python on Mac OS X is through the IDLE integrated development environment, see section The IDE and use the Help menu when the IDE is running. If you want to run Python scripts from the Terminal window command line or from the Finder you first need an editor to create your script.

Python Launcher

After you’ve installed Python 3, you’ll have access to a few more software tools. These include the Python Launcher, a GUI program that runs Python scripts.Here i am going to guide you to open Python launcher
Goto Launchpad and find Python launcher
To run your script from the Terminal window you must make sure that /usr/local/bin is in your shell search path.

To run your script from the Finder you have two options:
  • Drag your Python File  into PythonLauncher
  • Select PythonLauncher as the default application to open your script (or any .py script) through the finder Info window and double-click it. PythonLauncher has various preferences to control how your script is launched. Option-dragging allows you to change these for one invocation, or use its Preferences menu to change things globally.
For develop Python code I would recommend to use Pycharm IDE to be installed on your Mac machine.

PyCharm is an integrated development environment (IDE) used in computer programming, specifically for the Python language. It is developed by the Czech company JetBrains. 






Open the below link to download Pycharm,


PyCharm Installation Instructions

  • Download the pycharm-2018.3.5.dmg macOS Disk Image file
  • Mount it as another disk in your system
  • Copy PyCharm to your Applications folder


Launch Pycharm and create a new Python File to execute this Hello world Program.


Python is a very Mac-style language. It ditches many of the syntax conventions of traditional programming languages in favor of human-readable code, tab-based hierarchy, and abstracted memory management. It’s a great first programming language especially, which leaves a lot of folks looking for explanations on how to perform tasks that are apparently so simple, no tutorial thought to explain them.  

Finally you have all set for Developing Python courses and check my below new Sample project .

Good Luck!!!



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