Essential iPhone & iPad Magazine – August 2019

STEP 5 Now enter: exit() to leave the command line Python
session and return you back to the command prompt.
Enter the folder where you saved the code from the previous tutorial and
list the available files within; hopefully you should see the hello.py file.
STEP 7 Naturally, since this is Python 3 code, using the syntax
and layout that’s unique to Python 3, it only works
when you use the python3 command. If you like, try the same with
Python 2 by entering:
python hello.py
STEP 6 From within the same folder as the code you’re going to
run, enter the following into the command line:
python3 hello.py
This will execute the code we created, which to remind you is:
a=”Python”
b=”is”
c=”cool!”
print(a, b, c)
STEP 8 The result of running Python 3 code from the Python 2
command line is quite obvious. Whilst it doesn’t error
out in any way, due to the differences between the way Python 3
handles the Print command over Python 2, the result isn’t as we
expected. Using Sublime for the moment, open the hello.py file.
STEP 10 Save the hello.py file and drop back to the command
line. Now execute the newly saved code with:
python3 hello.py
The result will be the original Python is cool! statement, together with the
added input command asking you for your name, and displaying it in the
command window.
STEP 9 Since Sublime Text isn’t available for the Raspberry Pi,
you’re going to temporarily leave the Pi for the moment
and use Sublime as an example that you don’t necessarily need to use
the Python IDLE. With the hello.py file open, alter it to include the
following:
name=input(“What is your name? “)
print(“Hello,”, name)
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