lect07 - UCF Physics AST 5765/4762(Advanced Astronomical...

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UCF Physics: AST 5765/4762: (Advanced) Astronomical Data Analysis Fall 2009 Lecture Notes: 7. Python Functions 1 Check In: 10:30 — 10:35:, 5 min Do you have VNC up, python running, and the lecture demo ready to go? Who has done the matplotlib tutorial? How much of pydatatut? Any problems with system? Examples/templates in python directory HW3 is out, there is a handout called coding.pdf Questions before we start? 2 Go over HW2: 10:35 — 10:55, 20 min 3 Functions in General: 10:55 — 11:10, 15 min Computer programs can be very long and complicated Manage complexity by “boxing away” detail in functions Difference between “black box” and “glass brick” A function is a program unit that can be called by name Also called “routine” or “procedure” or “subprogram”, w/ nuances Contains program statements Executes same way each time it is called Programmer says name of function rather than inserting whole block of statements in the main routine Example:
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