To start Python or more correctly to open the Python Interactive Shell just click on the Start menu to find the shell icon ready in the frequently used programs, or just click on All Programs then on the entry Active State Active Python 3.1.
After activating the Python Interactive Shell, we will find a window where you can type our python instructions from the command line. Let’s start with the classic message that programmers use to send to the shell to test its regular operation; I refer to the most classic of messages: “Hello World”.
To display a message from the shell it will be necessary to print it, and then what could be the command that allows us to do this if not print (which translates into Italian means printing), this confirming the fact that reading the Python code is equivalent to reading a common listing in English.
Then to display the message “Hello World” at the command prompt, just type the following statement:
print ('Hello World')
to obtain the printout of the message as shown in the figure.
Having done this, let’s see now how to receive a first and immediate help from the Python interactive shell; in fact, when the shell opens, the following message is displayed:
Python 3.6.2 (v3.6.2:5fd33b5, Jul 8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)] on win32 Type "copyright", "credits" or "license()" for more information. >>>
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