Vincent Balmori wrote:
Okay, I think I understand it better for the quesiton:
"Improve the function ask_number() so that the function can be called with a step
value. Make the default value of step 1." Here is the improved function and the
human_move function that calls it later on. The thing I am unaware of doing is making the
step value 'optional rather than required' though.
You're almost there.
def ask_number(question, low, high, step):
"""Ask for a number within a range."""
step = 1
The line above is inappropriate, because it over-writes the value of
step that the caller provides. If you call
ask_number(question, 1, 100, 5)
the line step=1 throws away the value 5 and replaces it with 1. Get rid
of that line altogether, you don't want it.
The last change that needs to be made is to give step a default value.
The way to do that is to put it in the function parameters. He's an example:
def spam(n=3):
"""Return n slices of yummy spam."""
return "spam "*n
And here it is in use:
>>> spam(4)
'spam spam spam spam '
>>> spam() # just use the default
'spam spam spam '
Can you see what I did to set the default value for n? Read the function
definition line "def spam... " carefully.
--
Steven
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