lec-11-23 - Announcements Last project due THURS Dec 3 Make...

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11/22/2009 1 ECS 10 11/23 Announcements Last project due THURS Dec. 3. Make some progress on it this week. No lecture Wds! Little review project in lab hours, 11-1 in 2020 SLB. Today – adding and controlling complexity with functions. Last time Functions in a module Function definition Arguments and parameters Return values Functions in a program Functions in Programs Put function definitions at the top of the file, right after the imports. Functions must be defined before they can be used! The code in a function is not run until the function is called. This is true whether the function is in a separate module or in the file with the program. Example def addOne(x): x = x+1 return x age = 5 next = add_one(age) print "I am",age,"and soon I will be",next Local variables The variables inside a function are invisible to the main program. Variables created inside a function are called local variables. The parameters of the function are local variables.
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