The tutor seeks to clarify some ideas about Python’s print command.

I refreshed Python on one of my computers yesterday; I uninstalled Python 2.7, then installed Python 3.4 instead. To do so, I went to python.org. I was using a Windows 7 computer at the time; the site suggested a download for me, so I just followed its lead. Later I tried a test script. The whole process took inside of 10 minutes. Everything works flawlessly, so far as I know.

Of course, there are differences between Python 2.x and 3.x. A key one that might affect people still running Python 2.x concerns the print command.

In Python 2.x, print doesn’t require brackets. Therefore,

print “Hello!”   #2.x

works perfectly. However, in Python 3.x, brackets are required:

print(“Hello!”)   #3.x

In 2.x, print always attaches a newline. Therefore,

print “Hello!”
print “Ciao!”

will give the output

Hello!
Ciao!

In 3.x, you can stop the newline’s being added with end=” “:

print(“Hello!”, end=” “)
print(“Ciao!”)

gives the output

Hello! Ciao!

To my knowledge, the end=” “ trick doesn’t work in Python 2.x.

HTH:)

Source:

Donaldson, Toby. Python, 3rd Ed. Peachpit Press, 2014.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.