Game Development Reference
In-Depth Information
the same happens with
numbers[1]
(that is,
8
) and on the third iteration the same
happens with
numbers[2]
(that is,
3
). The final value of
secretNum
that is returned is
'983'
.
You may notice that
secretNum
in this function is a string, not an integer. This may
seem odd, but remember that our secret number could be something like
'012'
. If we
stored this as an integer, it would be
12
(without the leading zero) which would make it
harder to work with in our program.
Augmented Assignment Operators
The
+=
operator on line 8 is new. This is one of the augmented assignment operators.
Normally, if you wanted to add or concatenate a value to a variable, you would use code
that looked like this:
spam = 42
spam = spam + 10
cheese = 'Hello '
cheese = cheese + 'world!'
After running the above code,
spam
would have the value
52
and
cheese
would have
the value
'Hello world!'
. The augmented assignment operators are a shortcut that
frees you from retyping the variable name. The following code does the exact same thing as
the above code:
spam = 42
spam += 10 # Same as spam = spam + 10
cheese = 'Hello '
cheese += 'world!' # Same as cheese = cheese +
'world!'
There are other augmented assignment operators.
-=
will subtract a value from an
integer.
*=
will multiply the variable by a value.
/=
will divide a variable by a value.
Notice that these augmented assignment operators do the same math operations as the
-
,
*
,
and
/
operators. Augmented assignment operators are a neat shortcut.
How the Code Works: Lines 11 to 24
We also need a way of figuring out which clues to show to the player.
11. def getClues(guess, secretNum):
12. # Returns a string with the pico, fermi, bagels clues
