@@ -51,10 +51,15 @@ Functions are easy to understand, They simply **do something when they
5151are called** . Functions run immediately when we call them, so the
5252text appears on the screen right away when we run ` print(something) ` .
5353
54+ Sometimes people think that doing ` thingy = print('hello') ` means that
55+ Python is going to print hello every time we type ` thingy ` . But ** this
56+ is not correct** ! ` print('hello') ` runs print right away, and if we
57+ type ` thingy ` later it's not going to run ` print('hello') ` again.
58+
5459## Return values
5560
56- If we do ` thingy = print('hello') ` , what does the ` thingy ` variable end
57- up [ pointing to ] ( variables.md#variables ) ?
61+ Now we know that ` thingy = print('hello') ` doesn't store the
62+ ` print('hello') ` call in a variable. But what does it do then ?
5863
5964``` py
6065>> > thingy = print (' hello'
6469>> >
6570```
6671
67- So doing ` thingy = print('hello') ` set ` thingy ` to None. Here's what
68- happened, explained in more detail:
72+ So doing ` thingy = print('hello') ` set ` thingy ` to None.
73+
74+ Here's what happened, explained in more detail:
6975
70- - In ` thingy = print('hello') ` , the right side is processed first.
76+ - When we do ` thingy = print('hello') ` , the right side is processed
77+ first.
7178- ` print('hello') ` calls the print function with the argument
7279 ` 'hello' ` .
7380- The function runs. It shows the word hello.
@@ -79,8 +86,9 @@ happened, explained in more detail:
7986 there, and the assignment now looks like ` thingy = None ` .
8087- ` thingy ` is now None.
8188
82- Now we understand what a return value is. When we call the function,
83- Python "replaces" ` function(args) ` with whatever the function returns.
89+ Now we understand what ** a return value** is. When we call the
90+ function, Python "replaces" ` function(arguments) ` with whatever the
91+ function returns.
8492
8593Calling a function without assigning the return value to anything (e.g.
8694` print('hello') ` instead of ` thingy = print('hello') ` ) simply throws away
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