Install Python On Mac Os X

1. Mac Install Python 2.7
2. Install Python On Mac Os X
3. Python 3 Mac Os

Apple's Mac OS comes with python 2.7 installed by default. Perhaps you may want to use python 3.x.x on your machine and also use pip for package management with python 3.x.x. The easiest way to achieve this is by: NOTE: This tutorial does not use Virtual Environments like virtualenv or pyenv to manage various python versions. Mac OS X comes with Python 2.7 out of the box. 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 next section before you start building Python applications for real-world use.

This page tells you how to setup a Python programming environment for your Mac OS X computer and provides a step-by-step guide for creating and running a simple 'Hello, world' Python program. All of the software is freely available on the Web. These instructions are for MacOS X 10.13 (High Sierra), but the instructions for other recent versions of Mac OS X are similar.

Overview

The Python programming environment required by this booksite consists of:

Mac Install Python 2.7

• Python, that is, the Python compiler/interpreter.
• The Python standard libraries.
• IDLE, the Python Integrated DeveLopment Environment.
• The Tkinter, NumPy, and Pygame libraries, which are used by the booksite programs that do graphics or audio processing.
• The booksite library, that is, a set of modules that we developed specifically to support this booksite.
• The Terminal application that is bundled with Mac OS X.

Downloading and Installing Python, IDLE, Tkinter, NumPy, and Pygame

Python 2 is bundled with Mac OS X. However, Python 3 is not. We recommend that you download and install Python 3, and use Python 3 exclusively when running programs associated with this booksite.

Perform these steps to download and install Python, IDLE, Tkinter, NumPy, and PyGame:

• Browse to the Python for Mac download page.

• In the resulting page click on the Download Python 3.6.5 button. Your browser will download the file python-3.6.5-macosx10.6.pkg to your Downloads directory.

• Using Mac Finder Manager, navigate to your Downloads directory, and double-click on the python-3.6.5-macosx10.6.pkg file to install Python, Tkinter, and IDLE. Use the default options. (It's OK to delete the python-3.6.5-macosx10.6.pkg file after the installation is complete.)

• Open a Terminal window. To do that, click on the Spotlight Search icon on the right end of the menu bar. (It has the appearance of a magnifying glass.) In the resulting dialog box, type Terminal.app followed by the Enter key.

• In the Terminal window issue these commands to install NumPy and PyGame:

Perform these steps to test your installation:

• In the Terminal window issue the python3 command. You should see something like this:

• If you see that output, then your installation of Python, IDLE, and Tkinter was successful.

• At the Python >>> prompt, type import numpy followed by the Enter key. If no error messages appear, then your installation of NumPy was successful.

• At the Python >>> prompt, type import pygame followed by the Enter key. If no error messages appear, then your installation of PyGame was successful.

• At the Python >>> prompt, type exit() followed by the Enter key to exit Python.

• In the Terminal window issue the command idle3. If an IDLE window appears, then you have installed IDLE properly. Close the IDLE window.

• Close the Command Prompt window.

Downloading and Installing the Booksite Library

Perform these steps to download and install the booksite library:

• Use your Web browser to download this introcs-1.0.zip file to your /Users/yourusername/Downloads directory.

• In the Finder, double click on /Users/yourusername/Downloads/introcs-1.0.zip to unzip the file, thus creating a directory named /Users/yourusername/Downloads/introcs-1.0. (It's OK to delete the /Users/yourusername/Downloads/introcs-1.0.zip file after you have unzipped it.)

• Open a Terminal window.

• At any time the Terminal application has a working directory. Initially the working directory is /Users/yourusername. In the Terminal window issue the cd Downloads command to change your working directory to /Users/yourusername/Downloads, and then issue the cd introcs-1.0 command to change your working directory to /Users/yourusername/Downloads/introcs-1.0. (Incidentally, the cd . command changes your working directory to the 'parent' of the current working directory.)

• Issue the ls command to display the names of all files in your working directory. Make sure that a file named setup.py is in your working directory.

• Issue the python3 setup.py install --user command. The computer copies the files defining the booksite modules to a directory where Python can find them, and writes status messages to your Terminal window to indicate its progress.

Perform these steps to test your installation of the booksite library:

• In the Terminal window issue the python3 command.

• At the Python >>> prompt, type the statement import stdio followed by the Enter key. If Python generates no error messages, then you have installed the booksite library properly.

• At the Python >>> prompt, type exit() followed by the Enter key to exit Python.

• Close the Terminal window.

Configuring IDLE

So far you've downloaded and installed all of the software that you'll need. Control v on mac. You should perform one more step before creating your first program: configure the IDLE programming environment. Follow these instructions:

• Open a Terminal window.

• In the Terminal window issue the command idle3 to launch IDLE.

• Click on the Python → Preferences. Adguard 1 5 10. menu item.

• Click on the General tab.

• Click on the Open Edit Window radio button.

• Click on the Ok button.

• Close the IDLE window.

• Close the Terminal window.

Composing Your First Program

Having installed Python, the Python standard libraries, IDLE, Tkinter, NumPy, Pygame, and the booksite libraries, and having configured IDLE, you are ready to compose your first Python program. Perform these instructions:

Install Python On Mac Os X

• Using the Mac Finder, create a directory named /Users/yourusername/hello.

• Open a Terminal window.

• Issue the cd hello command to make the /Users/yourusername/hello directory your working directory.

• Issue the command idle3 & to launch IDLE. Note the trailing ampersand. The trailing ampersand tells the computer to run the idle3 program in the background, thereby leaving your Terminal application free to handle additional commands while IDLE is running.

• In IDLE, type the four-line Python program helloworld.py exactly as it appears below. Use the arrow keys, mouse, or touchpad to move within the text that you have typed. Use the Delete key to delete text. Be careful; the smallest typing mistake might cause the program to fail.

• When you are finished typing, in IDLE click on the File → Save. menu item to save the Python program. Save it in a file named helloworld.py in the directory /Users/yourusername/hello. The file name is case sensitive, so make sure you use all lowercase letters.

Running Your First Program

The final step is to run your program. It is possible to run some Python programs from within IDLE, but you should run the programs associated with this booksite directly from a Terminal window. To do that, perform these steps:

• Within the same Terminal window, issue the ls command to display the names of all files in the working directory. Confirm that the working directory contains your helloworld.py file.

• Issue the python3 helloworld.py command to run your program. If the computer writes 'Hello, World' to the Terminal window, then the execution of your helloworld.py program was successful. If the computer instead writes error messages, then use IDLE to correct your program, and issue the python3 helloworld.py command again. Repeat until your program runs successfully. If your program runs successfully the first time you try, then intentionally introduce an error into your program, just so you get some experience with correcting errors.

• Close the IDLE window.

• Close the Terminal window.

You now have installed and configured a reasonable Python environment, and have used it to compose and run a Python program. Congratulations! You are a Python programmer!

Downloading the Booksite Example Programs (optional)

We recommend that you download the booksite example programs, that is, the example Python programs that are presented incrementally throughout the booksite. Having done so, you can run those programs to help you learn about them. Perform these instructions:

• Use your Web browser to download this introcs-python.zip file to your /Users/yourusername/Downloads directory.

• In the Mac Finder, double-click on /Users/yourusername/Downloads/introcs-python.zip to unzip the file, thus creating the /Users/yourusername/Downloads/introcs-python directory containing the booksite example programs. (It's OK to delete the /Users/yourusername/Downloads/introcs-python.zip file after you have unzipped it.)

Then perform these steps to test your download of the booksite example programs: Moneydance 2019 coupon.

• Open a Terminal window.

• Issue the cd Downloads and cd introcs-python commands to make /Users/yourusername/Downloads/introcs-python your working directory.

• Issue the ls command. Confirm that the working directory contains a file named bouncingball.py.

• Issue the python3 bouncingball.py command. If Python launches a stddraw window showing an animated bouncing ball, then your download of the booksite example programs was successful.

• Close the stddraw window.

• Close the Terminal window. How to open png file on mac.

Downloading the Booksite Example Data (optional)

We recommend that you download the booksite example data, that is, the data files used by the booksite example programs that are presented incrementally throughout the booksite. Perform these instructions:

• Use your Web browser to download this introcs-data.zip file to your /Users/yourusername/Downloads directory.

• In the Finder, double-click on /Users/yourusername/Downloads/introcs-data.zip to unzip the file, thus creating the /Users/yourusername/Downloads/introcs-data directory containing the booksite example data files. (It's OK to delete the /Users/yourusername/Downloads/introcs-data.zip file after you have unzipped it.)

Downloading the Booksite Library: Part 2 (optional)

Previously on this page we described how to download and install the booksite library so Python can find it. Now we describe how to download the booksite library so you can find it — for the sake of studying the code that implements it, should you so desire. Perform these instructions:

• Use your Web browser to download this stdlib-python.zip file to your /Users/yourusername/Downloads directory.

• In the Mac Finder, double-click on /Users/yourusername/Downloads/stdlib-python.zip to unzip the file, thus creating the /Users/yourusername/Downloads/stdlib-python directory containing the booksite library. (It's OK to delete the /Users/yourusername/Downloads/stdlib-python.zip file after you have unzipped it.)

We invite you to study the code that implements the booksite library. But don't be concerned if some of the code is cryptic. The code that implements the booksite library uses some features of Python that are beyond the scope of the textbook and this booksite.

Q & A

Q. Why do I get the error ImportError: No module named stdio when I issue the command python program_that_uses_stdio.py?

A. You must issue the command python3 program_that_uses_stdio.py, as described above.

Q. I downloaded files using my browser, but can't find them. Where are they?

A. Many browsers by default place downloaded files in the directory /Users/yourusername/Downloads.

Q. How do I break out of an infinite loop when running my program from the Terminal application?

A. Type Ctrl-c. That is, while pressing the Ctrl key, type the c key.

Q. Must I use IDLE to create my Python programs? Can I use some other text editor?

Python 3 Mac Os

A. You need not use IDLE to create your Python programs; it is fine to use some other text editor. For example, it is reasonable to use the TextEdit editor that is bundled with Mac OS X. However if you do use some other text editor, then make sure you change its settings so it (1) uses a four-space indentation scheme, and (2) indents using spaces instead of tabs. The Wikipedia Comparison of text editors page provides summary descriptions of many text editors.

Note

Using Anaconda in a commercial setting? You may need to use Anaconda Commercial Edition. If you have already purchased Commercial Edition, please proceed to the Authenticating Commercial Edition section after completing your installation here.

Haven't purchased Commercial Edition yet? Visit https://anaconda.cloud/register to get started.

https://ameblo.jp/barconfoschiqa/entry-12649237454.html. You can install Anaconda using either the graphical installer ('wizard') or thecommand line ('manual') instructions below. If you are unsure, choose the graphical install.

macOS graphical install¶

1. Download the graphical macOS installer for your version of Python.

2. RECOMMENDED: Verify data integrity with SHA-256.For more information on hashes, see What about cryptographic hash verification?

3. Double-click the downloaded file and click continue to start the installation.

4. Answer the prompts on the Introduction, Read Me, and License screens.

5. Click the Install button to install Anaconda in your ~/opt directory (recommended):

6. OR, click the Change Install Location button to install in another location (not recommended).

   On the Destination Select screen, select Install for me only.

   Note

   If you get the error message 'You cannot install Anaconda in this location,' reselect Install for me only.

7. Click the continue button.

8. Optional: To install PyCharm for Anaconda, click on the link to https://www.anaconda.com/pycharm.

   Or to install Anaconda without PyCharm, click the Continue button.

9. A successful installation displays the following screen:

10. Verify your installation.

Using the command-line install¶

Use this method if you prefer to use a terminal window.

1. In your browser, download the command-line version of themacOS installer for your system.

2. RECOMMENDED: Verify data integrity with SHA-256.For more information on hash verification, see cryptographic hash validation.

   • Open a terminal and run the following:

   Note

   Replace /path/filename with your installation's path and filename.

3. Install for Python 3.7 or 2.7:

   • For Python 3.7 enter the following:

   • For Python 2.7, open the Terminal.app or iTerm2 terminal application and then enter the following:

   Note

   Include the bash command regardless of whether or not you are using the Bash shell.

   Note

   Replace ~/Downloads with your actual path and Anaconda3-2020.02-MacOSX-x86_64.sh with actual name of the file you downloaded.

4. The installer prompts 'In order to continue the installation process, please review the license agreement.'Click Enter to view the license terms.

5. Scroll to the bottom of the license terms and enter yes to agree to them.

6. The installer prompts you to Press Enter to confirm the location, Press CTRL-C to cancel the installationor specify an alternate installation directory. If you confirm the default location,it will display PREFIX=/home//anaconda<2or3> and continue the installation.

   Note

   Unlike the graphical install, installing the shell file will place it in ~/anaconda<2 or 3> by default,not ~/opt. This is due to limitations with installing .pkg files on macOS Catalina.

   Installation may take a few minutes to complete.

   Note

   We recommend you accept the default install location. Do not choose the path as /usr for theAnaconda/Miniconda installation.

7. The installer prompts 'Do you wish the installer to initialize Anaconda3by running conda init?' We recommend 'yes'.

   Note

   If you enter 'no', then conda will not modify your shell scripts at all.In order to initialize after the installation process is done, first runsourcetoconda>/bin/activate and then run condainit.

   Note

   If you are on macOS Catalina, the new default shell is zsh.You will instead need to run sourcetoconda>/bin/activatefollowed by condainitzsh.

8. The installer displays 'Thank you for installing Anaconda!'

9. Optional: The installer describes the partnership between Anaconda and JetBrains andprovides a link to install PyCharm for Anaconda athttps://www.anaconda.com/pycharm.

10. Close and open your terminal window for the Anaconda installation to take effect.

11. To control whether or not each shell session has the base environmentactivated or not, run condaconfig--setauto_activate_baseFalseorTrue. To run conda from anywhere without having the base environmentactivated by default, use condaconfig--setauto_activate_baseFalse.This only works if you have run condainit first.

    Note

    condainit is available in conda versions 4.6.12 and later.

12. Verify your installation.

What's next?¶

Get started programming quickly with Anaconda in the Getting started with Anaconda guide.