[Tutor] Return T/F vs print T/F
bgailer at gmail.com
Sat Feb 4 16:08:46 CET 2012
On 2/4/2012 9:38 AM, Sivaram Neelakantan wrote:
> While trying out code, I have trouble following the difference between
> return True vs print True and the same with False. If I use return
> for the True/False statements, nothing gets printed. Why?
Why did you expect something to be printed?
Perhaps you are confused between what happens in the interactive window
vs running a program?
Python 2.6.5 (r265:79096, Mar 19 2010, 21:48:26) [MSC v.1500 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> def f():
... return True
>>> def g():
... print True
>>> print f()
>>> print g()
In the interactive window, when you call a function, Python displays
the returned value.
When you run a program with a call to a function, Python does NOT
display the returned value.
A function that does not execute a return will return None; in the
interactive window nothing is displayed.
Is that sufficient?
Chapel Hill NC
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