Running python from command line mac

Python is an interpreted programming language, which means that for one to execute Python code on their local machine, they have to make sure they have the official interpreter. To run Python script on Mac you need to make sure you have Python already installed on your Mac OS X machine, go to Launchpad, search for the terminal and after you have opened it, type the following command. After the above command is executed on your Mac OS X, if everything goes fine, the following will come up.

How to run a python script on the OSX Terminal - howchoo

The stuff shown in the above screenshot comes from the Python interpreter. To execute Python code in the interpreter all one has to do is type the line of code and then hit Return button. In Python, code is being executed line by line. Once one launches Python shell from their terminal, the interactive mode of executing code is being activated. If everything has worked correctly, you have successfully executed your first Python line code.

As it is seen from the above example executed in the Python shell, when one works in interactive mode, every line of code produces an immediate result. The good thing about working with Python in interactive mode is the fact that one can easily test pieces of code and see for themselves what they do.

Running Python on your OS

Interactive mode code execution, is a Python feature which I truly love as not only it does help one to test and play with parts of their code, but it is very useful for the beginners too. One important part of programming languages is the variables which is being used to keep track of data. One can easily declare variables in Python programming language by using the following syntax.

The above variable links to data of type int, to an integer. There is many other data types supported in Python such as strings, floating point, list, tuple and dictionary. The above variable b, links to a floating point object. To experiment a little bit in the Python interactive shell, run the following arithmetic operation.

How to write and execute a simple Python script on Mac OS X, for complete beginners

Python supports arithmetic operations by default. Other data types important for one during their Python coder journey is list and tuple. A list is used to store objects of various data types. The following is the syntax for declaring a list. You should change directory at first shell command: You can execute your file by using this: This Depends on what version of python is installed on you system.

Python Launcher

See below. If You have Python 2. First of all, you need to move to the location of the file you are trying to execute, so in a Terminal: Enrique Enrique 1 4 If you are working with Ubuntu, sometimes you need to run as sudo: For Python2: Cro-Magnon Cro-Magnon 11 To run the program you can then copy and paste in this code: If it is installed on your Mac, you can run Python scripts from Finder. Alternatively, Python scripts can be dragged onto the Python Launcher icon.


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This works with the Python Launcher icon in both the Dock and in the Applications folder. You can also adjust the Python Launcher with a few additional options. With these options, you can select your version of Python, enable debugging tools, and adjust how the script runs.


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These options will be mostly of interest to those with some knowledge of the Python programming language. The Python Launcher Preferences window opens in the background automatically when Python Launcher is executed. The preferences window can also be invoked before running a script. Drag the script on the Python Launcher icon while holding the option key, and the preferences menu will spawn before the script is run, allowing you to adjust settings that will only apply to this run of the script.

Typically, changes to the Python Launcher preferences are global, affecting all future scripts. For Python programmers working within the IDE, this makes sense.

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