Difference between revisions of "Boston Python Workshop 7/Friday/Tutorial"

imported>Jesstess
imported>Jesstess
 
Functions don't have to return anything, if you don't want them to. They usually return something because we usually want to be able to assign variables to their output.
 
====What is the difference between <code>print</code> and <code>return</code>?====
 
Think for a moment about the differences between <code>print</code> and <code>return</code>:
 
* <code>print</code> prints output to the screen so your eyes can see it.
 
* <code>return</code> is used to hand off a value from inside a function to a variable outside the function.
 
For example:
 
<pre>
def add(x, y):
print x + y
</pre>
 
will print <code>x + y</code> to the screen so your eyes can see it.
 
<pre>
def add(x, y):
return x + y
</pre>
 
will hand off <code>x + y</code> from inside the function to outside the function. This allows you to do something like:
 
<pre>
result = add(5, 6)
print result
</pre>
 
Does that make sense? If not, talk about it with a neighbor or staff member.
 
==End of Part 2==
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